Professor Jondral

Univ.-Prof. i.R. Dr. rer.nat. Friedrich K. Jondral

Education/ Qualifications

1969 High-School Diploma, Julianum High-School, Helmstedt
1975 Diploma in Mathematics, Technische Universität Braunschweig
1979 Dr.rer.nat., Technische Universität Braunschweig
1984 Habilitation and Venia Legendi for Applied Mathematics, Universität Ulm
1991 Professor for Applied Mathematics, Universität Ulm

Work Record

1975-1979 Scientist at the Institute of Applied Mathematics, Technische Universität Braunschweig
1977-1978

Visiting Scientist at the Department of Mathematics, Nagoya University, Nagoya (Japan)
1979-1992 Employed in Industry
1993-2015 Full Professor and Director of the Communicatios Engineering Lab (CEL), Karlsruhe Institute of Technology (KIT)
SS 2004 Visiting Faculty to the Mobile and Portable Radio Research Group, Virginia Polytechnic Institute and State University, Blacksburg (VA)
since 2015 Retired

Areas of Experience

  • Mobile Radio Communications 
  • Software Defined and Cognitive Radio
  • Dynamic Resource Allocation
  • Ultra Wide Band
  • Signal Analysis

Professional Engagement

Engagement in Academic Affairs (Universität Karlsruhe (TH))



01.10.1997 - 30.09.2000    Elected Member of the Senate
01.10.1996 - 30.09.1998 Elected Member of the Great Senate
01.10.1998 - 30.09.1999 Vice Dean of the Department of Electrical Engineering
01.10.2000 - 30.09.2002 Dean of the Department of Electrical Engineering and Information Technology,
Member of the Senate
01.10.2004 - 30.09.2009 Elected Member of the Senate
01.10.2009 - 30.09.2011 Elected Member of the KIT (Karlsruhe Institute of Technology) Senate

Hobbies

Full List of Publications

A complete list of publications can be found on my Google Scholar profile.

Journal papers

  1. F. Jondral, "Funktechnik in der Fabrik," ZWF Zeitschrift für wirtschaftlichen Fabrikbetrieb, vol. 114, no. 1-2, pp. 57–61, 2019
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  2. F. Jondral, "White Gaussian Noise-Models for Engineers," Frequenz, vol. 72, no. 5-6, pp. 293–299, 2018
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  3. F. Engels, P. Heidenreich, A. Zoubir, F. Jondral and M. Wintermantel, "Advances in automotive radar: A framework on computationally efficient high-resolution frequency estimation," IEEE Signal Process. Mag., vol. 34, no. 2, pp. 36–46, 2017
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  4. A. Kaushik, S. Sharma, S. Chatzinotas, B. Ottersten and F. Jondral, "On the performance analysis of underlay cognitive radio systems: A deployment perspective," IEEE Trans. on Cogn. Commun. Netw., vol. 2, no. 3, pp. 273–287, 2016
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  5. A. Kaushik, S. Sharma, S. Chatzinotas, B. Ottersten and F. Jondral, "Sensing-throughput tradeoff for interweave cognitive radio system: A deployment-centric viewpoint," IEEE Trans. Wireless Commun., vol. 15, no. 5, pp. 3690–3702, 2016
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  6. T. Haustein, S. Stanczak, A. Wolisz, F. Jondral, H. Schotten, R. Kraemer, M. Mück, H. Mennenga and P. Bender, "Cognitive Wireless Communications–A paradigm shift in dealing with radio resources as a prerequisite for the wireless network of the future–An overview on the topic of cognitive wireless technologies," Frequenz, vol. 70, no. 7-8, pp. 281–288, 2016
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  7. F. Jondral, "Industrie 4.0 - Funk in der Fabrik," ZWF Zeitschrift fürr wirtschaftlichen Fabrikbetrieb, vol. 111, no. 1-2, pp. 59–62, 2016
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  8. R. Tanbourgi, H. Dhillon and F. Jondral, "Analysis of joint transmit–receive diversity in downlink MIMO heterogeneous cellular networks," IEEE Trans. Wireless Commun., vol. 14, no. 12, pp. 6695–6709, 2015
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  9. J. Demel, S. Koslowski and F. Jondral, "A LTE receiver framework using GNU Radio," Journal of Signal Processing Systems, vol. 78, no. 3, pp. 313–320, 2015
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  10. F. Jondral, "Bit Stream Recognition and Analysis in Cognitive Radio," Frequenz, vol. 69, no. 7-8, pp. 349–356, 2015
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  11. R. Tanbourgi, H. Dhillon, J. Andrews and F. Jondral, "Effect of spatial interference correlation on the performance of maximum ratio combining," IEEE Trans. Wireless Commun., vol. 13, no. 6, pp. 3307–3316, 2014
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  12. R. Tanbourgi, H. Dhillon, J. Andrews and F. Jondral, "Dual-branch MRC receivers under spatial interference correlation and Nakagami fading," IEEE Trans. Commun., vol. 62, no. 6, pp. 1830–1844, 2014
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  13. M. Mühlhaus and F. Jondral, "A fully blind receiver for automatic modulation classification of MIMO signals," Proc. Karlsruhe Workshope on Software Radios, pp. 148–152, 2014
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  14. R. Tanbourgi and F. Jondral, "Analysis of heterogeneous cellular networks under frequency diversity and interference correlation," IEEE Wireless Commun. Lett., vol. 4, no. 1, 2014
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  15. R. Tanbourgi, H. Jäkel and F. Jondral, "Cooperative interference cancellation using device-to-device communications," IEEE Commun. Mag., vol. 52, no. 6, pp. 118–124, 2014
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  16. R. Tanbourgi, S. Singh, J. Andrews and F. Jondral, "A tractable model for noncoherent joint-transmission base station cooperation," IEEE Trans. Wireless Commun., vol. 13, no. 9, pp. 4959–4973, 2014
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  17. M. Braun, R. Tanbourgi and F. Jondral, "Co-channel interference limitations of OFDM communication-radar networks," EURASIP Journal on Wireless Communications and Networking, vol. 2013, no. 1, 2013
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  18. M. Mühlhaus, M. Öner, O. Dobre and F. Jondral, "A low complexity modulation classification algorithm for MIMO systems," IEEE Commun. Lett., vol. 17, no. 10, pp. 1881–1884, 2013
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  19. R. Moorfeld, A. Finger, H. Dehner, H. Jäkel, M. Braun and F. Jondral, "MIRA - Physical Layer Optimisation for the Multiband Impulse Radio UWB Architecture," Ultra-Wideband Radio Technologies for Communications, Localization and Sensor Applications, pp. 1, 2013
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  20. R. Tanbourgi, J. Elsner, H. Jäkel and F. Jondral, "Adaptive frequency hopping in ad hoc networks with Rayleigh fading and imperfect sensing," IEEE Wireless Commun. Lett., vol. 1, no. 3, pp. 185–188, 2012
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  21. F. Jondral, J. Elsner and M. Schwall, "Software Defined Radio - Guest Editorial," Journal of Signal Processing Systems, vol. 69, no. 1, 2012
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  22. G. Vallant, M. Epp, M. Allen, M. Valkama and F. Jondral, "System-Level Mitigation of Undersampling ADC Nonlinearity for High-IF Radio Receivers," Frequenz, vol. 66, no. 9-10, pp. 311–319, 2012
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  23. R. Tanbourgi, H. Jäkel and F. Jondral, "Interference and throughput in Poisson networks with isotropically distributed nodes," arXiv preprint arXiv:1211.4755, 2012
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  24. J. Elsner, H. Park, J. Mo and F. Jondral, "Multi-level orthogonal hopping rendezvous," IEEE Commun. Lett., vol. 16, no. 8, pp. 1220–1223, 2012
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  25. R. Tanbourgi, H. Jäkel and F. Jondral, "Interference in poisson networks with isotropically distributed nodes," arXiv preprint arXiv:1211.4755, 2012
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  26. N. Grove, A. Picot, F. Jondral and J. Elsner, "Why the Digital Dividend will not close the Digital Divide," InterMedia, vol. 39, no. 2, pp. 32–37, May. 2011
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  27. A. Picot, N. Grove, F. Jondral and J. Elsner, "Why the Digital Dividend will not close the Digital Divide," InterMedia, 2011
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  28. V. Rodriguez, F. Jondral and R. Mathar, "Decoupled power allocation through pricing on a CDMA reverse link shared by energy-constrained and energy-sufficient data terminals," Mobile Networks and Applications, vol. 16, no. 5, pp. 640–660, 2011
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  29. S. Nagel, M. Schwall and F. Jondral, "Porting of waveforms: Principles and implementation," Frequenz, vol. 64, no. 11-12, pp. 218–223, 2010
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  30. R. Tanbourgi, H. Jäkel and F. Jondral, "Increasing the one-hop progress of nearest neighbor forwarding," IEEE Commun. Lett., vol. 15, no. 1, pp. 64–66, 2010
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  31. T. Renk, H. Jäkel and F. Jondral, "On Outage Capacity for Incremental Relaying with Imperfect Feedback," arXiv preprint arXiv:1001.2117, 2010
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  32. H. Dehner, H. Jäkel, D. Burgkhardt and F. Jondral, "The Teager-Kaiser energy operator in presence of multiple narrowband interference," IEEE Commun. Lett., vol. 14, no. 8, pp. 716–718, 2010
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  33. T. Renk, H. Jäkel, C. Kloeck and F. Jondral, "General expression of outage probability in cooperative networks," European Transactions on Telecommunications, vol. 20, no. 6, pp. 537–548, 2009
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  34. J. Elsner, C. Koerner and F. Jondral, "Centralized modeling of the communication space for spectral awareness in cognitive radio networks," ACM SIGMOBILE Mobile Computing and Communications Review, vol. 13, no. 2, pp. 62–73, 2009
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  35. H. Dehner, R. Moorfeld, H. Jäkel, D. Burgkhardt, A. Finger and F. Jondral, "Multi-band impulse radio–an alternative physical layer for high data rate UWB communication," Frequenz, vol. 63, no. 9-10, pp. 200–204, 2009
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  36. V. Blaschke, C. Kloeck, J. Weiss, T. Renk and F. Jondral, "Opportunistic WiMAX-GSM coexistence," IET Communications, vol. 2, no. 6, pp. 837–845, 2008
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  37. T. Yamada, D. Burgkhardt, I. Cosovic and F. Jondral, "Resource distribution approaches in spectrum sharing systems," EURASIP Journal on Wireless Communications and Networking, vol. 2008, no. 1, pp. 598080, 2008
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  38. Y. Takefumi, B. Dennis, C. Ivan, J. Friedrich K and others, "Resource distribution approaches in spectrum sharing systems," EURASIP Journal on Wireless Communications and Networking, vol. 2008, 2008
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  39. T. Renk, C. Kloeck, D. Burgkhardt, F. Jondral, D. Grandblaise, S. Gault and J. Dunat, "Bio-inspired algorithms for dynamic resource allocation in cognitive wireless networks," Mobile Networks and Applications, vol. 13, no. 5, pp. 431–441, 2008
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  40. T. Renk, H. Jäkel and F. Jondral, "Relay-Netzwerke – Kooperative Kommunikation unter mobilen Teilnehmern," Telekommunikation Aktuell, vol. 61, no. 8/9, pp. 1, Aug. 2007
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  41. M. Öner and F. Jondral, "Air interface identification for software radio systems," Int. Journal of Electronics and Commun. (AEÜ), vol. 61, no. 2, pp. 104–117, 2007
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  42. F. Jondral, "Cognitive radio: A communications engineering view," IEEE Wireless Commun., vol. 14, no. 4, pp. 28–33, 2007
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  43. C. Berger, M. Eisenacher, S. Zhou and F. Jondral, "Improving the UWB pulseshaper design using nonconstant upper bounds in semidefinite programming," IEEE J. Sel. Topics Signal Process., vol. 1, no. 3, pp. 396–404, 2007
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  44. U. Berthold, F. Jondral, S. Brandes and M. Schnell, "OFDM-based overlay systems: A promising approach for enhancing spectral efficiency," IEEE Commun. Mag., vol. 45, no. 12, pp. 52–58, 2007
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  45. M. Öner and F. Jondral, "On the extraction of the channel allocation information in spectrum pooling systems," IEEE J. Sel. Areas Commun., vol. 25, no. 3, pp. 558–565, 2007
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  46. U. Berthold, S. Brandes, M. Schnell and F. Jondral, "On Focus: OFDM Based Overlay Scenarios," Proc. IST Mobile & Wireless Communications Summit, 2006
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  47. C. Kloeck, H. Jäkel and F. Jondral, "Multi-agent radio resource allocation," Mobile Networks and Applications, vol. 11, no. 6, pp. 813–824, 2006
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  48. C. Kloeck, H. Jäkel and F. Jondral, "Multi-agent wireless system for dynamic and local combined pricing, allocation and billing," Journal of Communications, vol. 1, no. 1, pp. 48–59, 2006
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  49. F. Jondral, "Software-defined radio — basics and evolution to cognitive radio," EURASIP Journal on Wireless Communications and Networking, vol. 2005, no. 3, pp. 652784, 2005
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  50. G. Sessler and F. Jondral, "Low complexity polynomial expansion multiuser detector for CDMA systems," IEEE Trans. Veh. Technol., vol. 54, no. 4, pp. 1379–1391, 2005
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  51. J. Hillenbrand, T. Weiss and F. Jondral, "Calculation of detection and false alarm probabilities in spectrum pooling systems," IEEE Commun. Lett., vol. 9, no. 4, pp. 349–351, 2005
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  52. F. Jondral, "Signalverarbeitung in der Funktechnik - vom Digitalen Empfanger zum Cognitive Radio," Telekommunikation Aktuell, vol. 59, no. 5/6, pp. 1, 2005
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  53. T. Weiss and F. Jondral, "Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency," IEEE Commun. Mag., vol. 42, no. 3, pp. S8–14, 2004
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  54. A. Rhiemeier and F. Jondral, "Mathematical modeling of the software radio design problem," IEICE Transactions on Communications, vol. 86, no. 12, pp. 3456–3467, 2003
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  55. M. Schmidt and F. Jondral, "Generalized UWB-OFDM," Frequenz, vol. 57, no. 9-10, pp. 179–184, 2003
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  56. A. Wiesler and F. Jondral, "A software radio for second-and third-generation mobile systems," IEEE Trans. Veh. Technol., vol. 51, no. 4, pp. 738–748, 2002
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  57. G. Sessler, R. Machauer and F. Jondral, "A Non-Linear Multiuser Detector for UMTS," Int. Journal of Electronics and Commun. (AEÜ), vol. 56, no. 6, pp. 421–425, 2002
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  58. G. Sessler and F. Jondral, "Rapidly converging polynomial expansion multiuser detector with low complexity for CDMA systems," Electronics Letters, vol. 38, no. 17, pp. 997–998, 2002
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  59. F. Jondral, "Software Defined Radio-Ansätze zur Entwicklung adaptiver Transceiver," Frequenz, vol. 55, no. 11-12, pp. 287–295, 2001
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  60. F. Jondral, "Generalized functions in signal theory," Acta Applicandae Mathematicae, vol. 63, pp. 175–184, 2001
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  61. R. Machauer, B. Schipper and F. Jondral, "RAKE-Empfänger für UMTS," Frequenz, vol. 54, no. 11-12, pp. 277–283, 2000
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  62. F. Jondral, "Funkubetragung uber Kurzwelle," Telekom Praxis, vol. 76, no. 12, pp. 35–45, 1999
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  63. G. Wetzker and F. Jondral, "Ambiguity function of periodic pulse shaped sequences," Electronics Letters, vol. 35, no. 8, pp. 611–613, 1999
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  64. M. Kohl and F. Jondral, "Interference on satcom up-links and its suppression," International Journal of Satellite Communications, vol. 16, no. 3, pp. 147–153, 1998
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  65. C. Delfs and F. Jondral, "Zeit-Frequenz-Verfahren für die Klassifikation transienter Signale," Frequenz, vol. 52, no. 3-4, pp. 60–65, 1998
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  66. F. Jondral, "Hot Spot Analysis in GSM Cells Using Radio Direction Finding," Int. Journal of Electronics and Commun. (AEÜ), vol. 52, no. 1, pp. 37–42, 1998
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  67. F. Jondral, M. Kohl and C. Hartmann, "Dopplerprofile für Kommunikationssatelliten," Frequenz, vol. 50, no. 5-6, pp. 111–116, 1996
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  68. F. Jondral, "Nacbrichtenuebertragung in LED-SATCOM-Systemen," Telekom Praxis, vol. 72, pp. 17–17, 1995
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  69. F. Jondral, K. Martin and H. Saur, "Peilauswertung mit Clusteranalyseverfahren," Frequenz, vol. 39, no. 4, pp. 111–113, 1985
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  70. F. Jondral, "Automatic classification of high frequency signals," Signal Processing, vol. 9, no. 3, pp. 177–190, 1985
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Book chapters

  1. A. Kaushik, S. Sharma, S. Chatzinotas, B. Ottersten and F. Jondral, "Modelling and Performance Analysis of Cognitive Radio Systems from a Deployment Perspective," in W. Zhang (eds.), Handbook of Cognitive Radio, Springer, 2017
    [ Cite ]  
  2. R. Tanbourgi, H. Jäkel and F. Jondral, "Cooperative Diversity Under Spatial Interference Correlation in Wireless Networks," in W. Utschik (eds.), Communications in Interference Limited Networks, pp. 367–391, Springer, 2016
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  3. F. Jondral and V. Blaschke, "Evolution of Digital Radios - From Analog to Cognitive Featgures," in F. Fitzek and M. Katz (eds.), Cognitive Wireless Networks, pp. 635–655, Springer, 2007
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  4. C. Kloeck, V. Blaschke, H. Jäkel, F. Jondral, D. Grandblaise, J. Dunat and S. Gault, "Cognitive Radio and Dynamic Spectrum Management," in Y. Zhang, J. Luo and H. Hu (eds.), Wireless Mesh Networking: Architectures, Protocols, and Standards, pp. 467–508, Auerbach Publishers, 2007
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  5. F. Jondral, "Parametrization — a technique for SDR implementation," in W. Tuttlebee (eds.), Software Defined Radio Enabling Technologies, pp. 233–256, John Wileys & Sons, 2002
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  6. A. Wiesler, O. Muller, R. Machauer and F. Jondral, "Parameter Representations for Baseband Processing of 2G and 3G Mobile Communications Systems," in E. Del Re (eds.), Software Radio, pp. 199–210, Springer, 2001
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  7. F. Jondral and A. Mohr, "Über die Erweiterung Eines Klassifikationsmodells für Funksignale," in H. Niemann (eds.), Mustererkennung 1985, pp. 282–282, Springer, 1985
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  8. F. Jondral and A. Mohr, "Ein Simulationsmodell zur Klassifikation binär modulierter Signale," in B. Radig (eds.), Modelle und Strukturen, pp. 41–47, Springer, 1981
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Conference papers

  1. F. Wunsch, D. Weber, H. Jäkel and F. Jondral, "Experimental Evaluation of the Long-Range MIMO Outdoor Channel at 2.4 GHz," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), 2019
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  2. F. Wunsch, M. Ströer, M. Müller, H. Jäkel and F. Jondral, "LPWAN Applications in the 2.4 GHz Band: A Viable Choice?," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), Chicago, IL, USA, Aug. 2018
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  3. F. Wunsch, H. Jäkel and F. Jondral, "A low-complexity air interface with transmit diversity for low power wide area networks," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), 2018
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  4. F. Wunsch, H. Jäkel and F. Jondral, "Bringing Transmit Antenna Diversity to LPWANs: An Experimental Testbed Implementation," Proc. GNU Radio Conference, 2018
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  5. J. Demel, C. Bockelmann, A. Dekorsy, A. Rode, S. Koslowski and F. Jondral, "An optimized GFDM software implementation for future Cloud-RAN and field tests," Proc. GNU Radio Conference, Sep. 2017
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  6. F. Wunsch, S. Koslowski, S. Müller, N. Cuervo and F. Jondral, "A cognitive overlay system based on FBMC," Proc. IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), 2017
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  7. J. Fink, H. Guissouma and F. Jondral, "Feature-based gesture classification by means of high resolution radar measurements," Proc. International Radar Symposium (IRS), 2017
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  8. F. Wunsch, K. Maier, H. Jäkel and F. Jondral, "Implementation and Performance Evaluation of IEEE 802.15. 4 LECIM DSSS PHY at 2.4 GHz," Proc. GNU Radio Conference, pp. 6–6, 2017
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  9. A. Kaushik, S. Sharma, S. Chatzinotas, B. Ottersten and F. Jondral, "Performance analysis of hybrid cognitive radio systems with imperfect channel knowledge," Proc. IEEE Int. Conf. Commun. (ICC), 2016
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  10. H. Becker, A. Kaushik, S. Sharma, S. Chatzinotas and F. Jondral, "Experimental study of an underlay cognitive radio system: Model validation and demonstration," Proc. International Conference on Cognitive Radio Oriented Wireless Networks, pp. 511–523, 2016
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  11. B. Nuss, J. Fink and F. Jondral, "Cost efficient frequency hopping radar waveform for range and Doppler estimation," Proc. International Radar Symposium (IRS), 2016
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  12. J. Fink, S. Wunsch and F. Jondral, "Improved detector for continuous wave radar waveforms exploiting phase information," Proc. IEEE Radar Conference (RadarCon), pp. 1285–1290, 2015
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  13. J. Fink and F. Jondral, "Comparison of OFDM radar and chirp sequence radar," Proc. International Radar Symposium (IRS), pp. 315–320, 2015
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  14. R. Tanbourgi and F. Jondral, "Downlink MIMO diversity with maximal-ratio combining in heterogeneous cellular networks," Proc. IEEE Int. Conf. Commun. (ICC), pp. 1831–1837, 2015
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  15. N. El Gemayel, J. Schloemann, R. Buehrer and F. Jondral, "Improved indoor positioning using the Baum-Welch algorithm," Proc. IEEE Global Commun. Conf. (GLOBECOM), 2015
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  16. A. Kaushik, F. Wunsch, A. Sagainov, N. Cuervo, J. Demel, S. Koslowski, H. Jäkel and F. Jondral, "Spectrum sharing for 5G wireless systems (Spectrum sharing challenge)," Proc. IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), 2015
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  17. S. Wunsch, J. Fink and F. Jondral, "Improved detection by peak shape recognition using artificial neural networks," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, 2015
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  18. N. El Gemayel, H. Jäkel and F. Jondral, "A Weighted Least Squares Algorithm for Passive Localization in Multipath Scenarios," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, 2015
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  19. J. Fink and F. Jondral, "A numerical comparison of chirp sequence versus OFDM radar waveforms," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), 2015
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  20. F. Wunsch, H. Jäkel and F. Jondral, "Performance Evaluation of IEEE 802.15. 4 OQPSK and CSS PHY in the Presence of Interference," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, 2015
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  21. A. Kaushik, S. Sharma, S. Chatzinotas, B. Ottersten and F. Jondral, "Estimation-Throughput tradeoff for underlay cognitive radio systems," Proc. IEEE Int. Conf. Commun. (ICC), pp. 7701–7706, 2015
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  22. S. Koslowski and F. Jondral, "SIC-MMSE detection for filter bank multicarrier systems," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–2, 2015
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  23. A. Kaushik, S. Sharma, S. Chatzinotas, B. Ottersten and F. Jondral, "Sensing-throughput tradeoff for cognitive radio systems with unknown received power," Proc. International Conference on Cognitive Radio Oriented Wireless Networks, pp. 308–320, 2015
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  24. S. Koslowski, M. Braun and F. Jondral, "Using filter bank multicarrier signals for radar imaging," Proc. IEEE/ION Position, Location and Navigation Symposium (PLANS), pp. 152–157, 2014
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  25. N. El Gemayel, H. Jäkel and F. Jondral, "Error analysis of a low cost TDoA sensor network," Proc. IEEE/ION Position, Location and Navigation Symposium (PLANS), pp. 1040–1045, Monterey, CA, USA, 2014
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  26. R. Tanbourgi, H. Dhillon, J. Andrews and F. Jondral, "Dual-branch MRC receivers in the cellular downlink under spatial interference correlation," Proc. European Wireless Conference, 2014
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  27. R. Tanbourgi, S. Singh, J. Andrews and F. Jondral, "Analysis of non-coherent joint-transmission cooperation in heterogeneous cellular networks," Proc. IEEE Int. Conf. Commun. (ICC), pp. 5160–5165, 2014
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  28. A. Kaushik and F. Jondral, "On the estimation of channel state transitions for cognitive radio systems," Proc. IEEE Wireless Commun. and Networking Conf. (WCNC), pp. 2037–2042, 2014
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  29. A. Kaushik, M. Raza and F. Jondral, "On the deployment of cognitive relay as underlay systems," Proc. International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), pp. 329–334, 2014
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  30. A. Kaushik, M. Müller and F. Jondral, "Cognitive relay: Detecting spectrum holes in a dynamic scenario," Proc. International Symposium on Wireless Communication Systems (ISWCS), pp. 1–2, Ilmenau, Germany, Aug. 2013
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  31. J. Demel, S. Koslowski and F. Jondral, "A LTE Receiver Framework Implementation in GNU Radio," Proc. Wireless Innovation Forum European Conference on Communications Technologies and Software Defined Radio (SDR-WInnComm-Europe), Munich, Germany, 2013
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  32. N. El Gemayel, H. Jäkel and F. Jondral, "A hybrid TDOA/RSSD geolocation system using the unscented kalman filter," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, 2013
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  33. M. Mühlhaus, M. Öner, O. Dobre, H. Jäkel and F. Jondral, "A novel algorithm for MIMO signal classification using higher-order cumulants," Proc. IEEE Radio and Wireless Symposium, pp. 7–9, 2013
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  34. R. Tanbourgi, H. Jäkel and F. Jondral, "Cooperative relaying in a Poisson field of interferers: A diversity order analysis," Proc. IEEE Int. Symp. Inform. Theory (ISIT), pp. 3100–3104, Istanbul, Turkey, 2013
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  35. N. Otterbach, M. Braun and F. Jondral, "Wireless networks in-the-loop: Creating a SDR development environment," Proc. International Symposium on Wireless Communication Systems (ISWCS), 2013
    [ Cite ]  
  36. M. Schwall and F. Jondral, "High-speed turbo equalization for GPP-based software defined radios," Proc. IEEE Military Communications Conference (MILCOM), pp. 1592–1596, 2013
    [ Cite ]  
  37. J. Fink, F. Jondral, T. Bächle and O. Prinz, "Ultrawideband radar time domain simulation for the analysis of coherent signal processing techniques," Proc. International Radar Symposium (IRS), pp. 1019–1024, 2013
    [ Cite ]  
  38. N. El Gemayel, S. Koslowski, F. Jondral and J. Tschan, "A low cost TDOA localization system: Setup, challenges and results," Proc. Workshop on Positioning, Navigation and Communication (WPNC), 2013
    [ Cite ]  
  39. M. Braun, M. Müller, M. Fuhr and F. Jondral, "A USRP-based testbed for OFDM-based radar and communication systems," Proc. of 22nd Virginia Tech. Symposium on Wireless Communications, Blacksburg, VA, USA, Jun. 2012
    [ Cite ]  
  40. R. Tanbourgi, X. Pujol i Molist and F. Jondral, "Collision-balancing frequency hopping in single-hop mobile ad hoc networks," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), 2012
    [ Cite ]  
  41. M. Fuhr, M. Braun, C. Sturmz, L. Reichardtz and F. Jondral, "An SDR-based experimental setup for OFDM-based radar," Proc. Karlsruhe Workshop on Software Radio, pp. 176, 2012
    [ Cite ]  
  42. J. Fink, M. Braun and F. Jondral, "Effects of arbitrarily spaced subcarriers on detection performance in OFDM radar," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), 2012
    [ Cite ]  
  43. N. El Gemayel, S. Meier and F. Jondral, "On the applicability of the residual weighting algorithm for TDOA," Proc. International Congress on Ultra Modern Telecommunications and Control Systems, pp. 143–147, 2012
    [ Cite ]  
  44. R. Tanbourgi, J. Elsner, H. Jäkel and F. Jondral, "Optimizing practical adaptive frequency hopping and medium access control in ad hoc networks," Proc. International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks (WiOpt), pp. 368–373, 2012
    [ Cite ]  
  45. M. Mühlhaus, M. Öner, O. Dobre, H. Jäkel and F. Jondral, "Automatic modulation classification for MIMO systems using fourth-order cumulants," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, 2012
    [ Cite ]  
  46. H. Dehner, D. Figielek, H. Jäkel, M. Braun, F. Jondral and K. Witrisal, "High data rate coexistence-based channel coding for noncoherent Multiband Impulse Radio UWB," Proc. IEEE International Conference on Ultra-Wideband, pp. 120–124, 2012
    [ Cite ]  
  47. M. Braun, M. Fuhr and F. Jondral, "Spectral estimation-based OFDM radar algorithms for IEEE 802.11a Signals," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), 2012
    [ Cite ]  
  48. M. Fischer, M. Braun, J. Elsner and F. Jondral, "An Over-the-Air Reconfiguration API for Experimental Cognitive Radio Setups," Proc. Wireless Innovation Forum European Conference on Communications Technologies and Software Defined Radios (SDR'11-WInnComm-Europe), Brussels, Belgium, Jun. 2011
    [ Cite ]  
  49. M. Schwall, S. Nagel, C. Reimer and F. Jondral, "Model-based waveform design for the universal software radio peripheral with simulink," Proc. IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), 2011
    [ Cite ]  
  50. M. Braun, C. Sturm and F. Jondral, "On the single-target accuracy of OFDM radar algorithms," Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC), pp. 794–798, 2011
    [ Cite ]  
  51. O. Apilo, M. Lasanen, A. Mämmelä and F. Jondral, "Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity," Proc. Wireless Telecommunications Symposium (WTS), pp. 1–6, 2011
    [ Cite ]  
  52. R. Tanbourgi, J. Elsner and F. Jondral, "Lowering outage probability in ad hoc networks by nearest neighbor FDMA scheduling," Proc. IEEE Wireless Communications and Networking Conference, pp. 120–125, 2011
    [ Cite ]  
  53. J. Elsner, C. Mohr and F. Jondral, "Capacity Regions of Wireless Multi-Channel Ad Hoc Networks," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), 2011
    [ Cite ]  
  54. M. Hauske, F. Robel, F. Jondral and M. Ihle, "Real-time realization of interference suppression for robust wireless optical communication," Proc. Digital Signal Processing and Signal Processing Education Meeting (DSP/SPE), pp. 482–487, 2011
    [ Cite ]  
  55. R. Tanbourgi, J. Elsner, H. Jäkel and F. Jondral, "Lower bounds on the success probability for ad hoc networks with local fdma scheduling," Proc. International Symposium of Modeling and Optimization of Mobile, Ad Hoc, and Wireless Networks (WiOpt), pp. 342–347, 2011
    [ Cite ]  
  56. H. Dehner, H. Jäkel and F. Jondral, "On the modified Teager-Kaiser energy operator regarding narrowband interference," Proc. Wireless Telecommunications Symposium (WTS), pp. 1–5, 2011
    [ Cite ]  
  57. G. Vallant, J. Dederer, M. Epp, W. Schlecker and F. Jondral, "A linearization strategy for undersampling analog-to-digital converters," Proc. IWADC, pp. 197–204, 2011
    [ Cite ]  
  58. J. Elsner, R. Tanbourgi and F. Jondral, "Multiple access interference mitigation through multi-level locally orthogonal FH-CDMA," Proc. Military Communications Conference (MILCOM), pp. 378–383, 2011
    [ Cite ]  
  59. H. Dehner, H. Jäkel and F. Jondral, "Narrow-and broadband Interference Robustness for OOK/BPPM based Energy Detection," Proc. IEEE Int. Conf. Commun. (ICC), pp. 1–5, 2011
    [ Cite ]  
  60. F. Massaro, J. Elsner, F. Dalla Vedova and F. Jondral, "Components for Software Radio Wideband Receivers: A space segment survey," Proc. SDR Technical Conference, Washington DC, USA, Nov. 2010
    [ Cite ]  
  61. H. Dehner, Y. Koch, H. Jäkel, D. Burgkhardt, F. Jondral, R. Moorfeld and A. Finger, "Narrow-band interference robustness for energy detection in ook/ppm," Proc. IEEE Int. Conf. Commun. (ICC), pp. 1–5, Cape Town, South Africa, May. 2010
    [ Cite ]  
  62. T. Renk, H. Jäkel and F. Jondral, "Incremental Relaying with Imperfect Feedback in Wireless Cooperative Networks," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, 2010
    [ Cite ]  
  63. T. Renk, H. Jäkel and F. Jondral, "Outage regions of cooperative networks for different coding schemes," Proc. Intl. Symposium on Control, Commun. and Signal Processing (ISCCSP), pp. 1–4, 2010
    [ Cite ]  
  64. T. Renk, H. Jäkel, F. Jondral and A. Goldsmith, "Do decode-and-forward relaying protocols beat transmit diversity?," European Wireless Conference (EW), pp. 294–300, 2010
    [ Cite ]  
  65. H. Dehner, H. Jäkel, D. Burgkhardt, F. Jondral, R. Moorfeld and A. Finger, "Treatment of temporary narrowband interference in non-coherent multiband impulse radio UWB," Proc. IEEE Mediterranean Electrotechnical Conference (Melecon), pp. 1335–1339, 2010
    [ Cite ]  
  66. T. Renk, H. Jäkel, F. Jondral, D. Gündüz and A. Goldsmith, "Outage capacity of bursty amplify-and-forward with incremental relaying," Proc. Int. Symp. Inform. Theory Appl.(ISITA), pp. 1007–1011, 2010
    [ Cite ]  
  67. M. Hauske and F. Jondral, "Characterization of wireless optical indoor channels," Proc. Photonics Global Conference, pp. 1–5, 2010
    [ Cite ]  
  68. M. Braun, Y. Koch, C. Sturm and F. Jondral, "Signal design and coding for high-bandwidth OFDM in car-to-car communications," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), 2010
    [ Cite ]  
  69. M. Braun, C. Sturm and F. Jondral, "Maximum likelihood speed and distance estimation for OFDM radar," Proc. IEEE Radar Conference, pp. 256–261, 2010
    [ Cite ]  
  70. M. Braun, C. Sturm and F. Jondral, "On the frame design for Joint OFDM radar and communications," Proc. International OFDM Workshop, Hamburg, Germany, 2010
    [ Cite ]  
  71. S. Koslowski, M. Braun, J. Elsner and F. Jondral, "Wireless networks in-the-loop: Emulating an RF front-end in GNU radio," Proc. SDR Forum, 2010 European Reconfigurable Radio Technologies Workshop, 2010
    [ Cite ]  
  72. J. Elsner, R. Tanbourgi and F. Jondral, "On the transmission capacity of wireless multi-channel ad hoc networks with local FDMA scheduling," Proc. International Congress on Ultra Modern Telecommunications and Control Systems, pp. 315–320, 2010
    [ Cite ]  
  73. S. Nagel, M. Schwall and F. Jondral, "Performance overhead with high level waveform development," Proc. European Reconfigurable Radio Technologies Workshop, 2010
    [ Cite ]  
  74. J. Elsner, M. Braun, S. Nagel, K. Nagaraj and F. Jondral, "Wireless networks in-the-loop: software radio as the enabler," Proc. Software Defined Radio Forum Technical Conference, 2009
    [ Cite ]  
  75. M. Braun, J. Elsner and F. Jondral, "Signal detection for cognitive radios with smashed filtering," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), 2009
    [ Cite ]  
  76. T. Renk, D. Iankov and F. Jondral, "Adaptive resource allocation in wireless relay networks," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), 2009
    [ Cite ]  
  77. T. Renk and F. Jondral, "Location-dependent performance of cooperative networks with power allocation," Proc. IEEE Symposium on Computers and Communications, pp. 399–403, 2009
    [ Cite ]  
  78. T. Renk and F. Jondral, "Upper and lower bound on signal-to-noise ratio gains for cooperative relay networks," Proc. Conf. Inform. Sciences Syst. (CISS), pp. 652–656, 2009
    [ Cite ]  
  79. V. Rodriguez, F. Jondral and R. Mathar, "Power allocation for social benefit through price-taking behaviour on a CDMA reverse link shared by energy-constrained and energy-sufficient data terminals," Proc. International Symposium on Wireless Communication Systems, pp. 56–60, 2009
    [ Cite ]  
  80. V. Rodriguez, F. Jondral and R. Mathar, "Power allocation through revenue-maximising pricing on a CDMA reverse link shared by energy-constrained and energy-sufficient heterogeneous data terminals," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), 2009
    [ Cite ]  
  81. M. Braun, C. Sturm, A. Niethammer and F. Jondral, "Parametrization of joint OFDM-based radar and communication systems for vehicular applications," Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC), pp. 3020–3024, 2009
    [ Cite ]  
  82. J. Elsner, L. Chaichenets, H. Dehner and F. Jondral, "On regulation of spectrum sharing: An analysis supporting a distributed pilot channel," Proc. International Conference on Cognitive Radio Oriented Wireless Networks and Communications, 2009
    [ Cite ]  
  83. F. Jondral, D. Burgkhardt, J. Elsner, A. Picot and N. Grove, "Convergence of Mobile Communications and Broadcasting: A long term perspective," Proc. Conference on Applied Infrastructure Research, Berlin, Germany, 2009
    [ Cite ]  
  84. M. Mueck, C. Rom, W. Xu, A. Polydoros, N. Dimitriou, A. Diaz, R. Piesiewicz, H. Bogucka, S. Zeisberg, H. Jäkel, T. Renk and F. Jondral, "Smart femto-cell controller based distributed cognitive pilot channel," Proc. International Conference on Cognitive Radio Oriented Wireless Networks and Communications, pp. 1–5, 2009
    [ Cite ]  
  85. T. Renk, H. Jäkel and F. Jondral, "Comparing the outage capacity of transmit diversity and incremental relaying," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, 2009
    [ Cite ]  
  86. J. Elsner, M. Braun, L. Chaichenets and F. Jondral, "On linearly precompressed non-parametric spectrum estimation," Proc. Workshop on Statistical Signal Processing, pp. 773–776, 2009
    [ Cite ]  
  87. T. Renk, H. Jäkel, F. Jondral, D. Gündüz and A. Goldsmith, "Outage capacity of incremental relaying at low signal-to-noise ratios," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), 2009
    [ Cite ]  
  88. J. Elsner, M. Braun, H. Jäkel and F. Jondral, "Compressed spectrum estimation for cognitive radios," Proc. 19th Virginia Tech Symposium on Wireless Communications, pp. 1–4, 2009
    [ Cite ]  
  89. V. Rodriguez, F. Jondral and H. Jäkel, "Tracking a large number of tokens: A customised prioritised medium-access protocol for target responses," ICT Mobile Summit, Santander, Spain, 2009
    [ Cite ]  
  90. T. Renk, H. Jäkel and F. Jondral, "Outage regions and optimal power allocation for wireless relay networks," Proc. IEEE Inform. Theory Workshop (ITW), pp. 168–172, 2009
    [ Cite ]  
  91. H. Dehner, A. Romero, H. Jäkel, D. Burgkhardt, R. Moorfeld, F. Jondral and A. Finger, "Iterative coexistence approaches for non-coherent multi-band impulse radio UWB," Proc. IEEE International Conference on Ultra-Wideband, pp. 734–738, 2009
    [ Cite ]  
  92. M. Hauske, D. Shi, M. Ihle and F. Jondral, "Artificial lighting interference on free space photoelectric systems," Proc. International Symposium on Electromagnetic Compatibility, pp. 24, 2009
    [ Cite ]  
  93. D. Burgkhardt, I. Cosovic, G. Auer and F. Jondral, "Reducing the probability of network overload by spectrum trading," 2009 Canadian Conference on Electrical and Computer Engineering, pp. 363–367, 2009
    [ Cite ]  
  94. T. Renk, H. Jäkel, M. Braun, F. Jondral and G. Germany, "A Novel Combining Receiver for a Dual-Diversity Wireless Relay Network," Proc. International Symposium on Wireless Personal Multimedia Communications (WPMC), 2009
    [ Cite ]  
  95. R. Moorfeld, A. Finger, H. Dehner, H. Jäkel and F. Jondral, "Performance of a high flexible non-coherent multiband impulse radio UWB system," Proc. IASTED International Conference, pp. 027, 2009
    [ Cite ]  
  96. H. Dehner, M. Linde, R. Moorfeld, H. Jäkel, D. Burgkhardt, F. Jondral and A. Finger, "A low complex and efficient coexistence approach for non-coherent multiband impulse radio UWB," Proc. IEEE Sarnoff Symposium, pp. 1–5, 2009
    [ Cite ]  
  97. T. Renk, H. Jäkel and F. Jondral, "Signal-to-noise ratio gains for cooperative relaying strategies," Proc. International Symposium on Wireless Communication Systems, pp. 324–328, 2008
    [ Cite ]  
  98. T. Renk, C. Kloeck, H. Jäkel and F. Jondral, "Error performance of multi-hopping half-duplex relay networks," Proc. International Symposium on Wireless Pervasive Computing, pp. 314–318, 2008
    [ Cite ]  
  99. T. Renk, H. Jäkel, C. Kloeck and F. Jondral, "Signal-to-Noise ratio requirements for wireless relay networks," Proc. Intl. Symposium on Control, Commun. and Signal Processing (ISCCSP), pp. 791–794, 2008
    [ Cite ]  
  100. V. Blaschke, T. Renk and F. Jondral, "A cognitive radio receiver supporting wide-band sensing," Proc. IEEE Int. Conf. Commun. (ICC), pp. 499–503, 2008
    [ Cite ]  
  101. M. Hauske, H. Jäkel, H. Dehner and F. Jondral, "Interference mitigation for energy detection in a multiband impulse radio UWB system," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, 2008
    [ Cite ]  
  102. D. Burgkhardt, I. Cosovic and F. Jondral, "Dynamic spectrum allocation by hierarchical resource trading," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 1796–1800, 2008
    [ Cite ]  
  103. R. Moorfeld, A. Finger, H. Dehner, H. Jäkel and F. Jondral, "A simple and fast detect and avoid algorithm for non-coherent multiband impulse radio UWB," Proc. IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSSTA), 2008
    [ Cite ]  
  104. J. Elsner, C. Koerner and F. Jondral, "Non-parametric modeling with Gaussian processes for spatial radio-scene analysis," Proc. IEEE Consumer Communications and Networking Conference, pp. 983–987, 2008
    [ Cite ]  
  105. U. Berthold and F. Jondral, "Distributed detection in OFDM based ad hoc overlay systems," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 1666–1670, 2008
    [ Cite ]  
  106. U. Berthold, F. Fu, M. van der Schaar and F. Jondral, "Detection of spectral resources in cognitive radios using reinforcement learning," Proc. IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), 2008
    [ Cite ]  
  107. F. Jondral, "From Maxwell's equations to cognitive radio," Proc. International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom), pp. 1–5, 2008
    [ Cite ]  
  108. T. Renk, V. Blaschke and F. Jondral, "Time-dependent statistical analysis of measurements for the evaluation of vacant spectrum bands," XXIX. URSI General Assembly, pp. 17, 2008
    [ Cite ]  
  109. S. Nagel, V. Blaschke, J. Elsner, F. Jondral and D. Symeonidis, "Certification of SDRs in new public and governmental security systems," Proc. SDR Technical Conf. Product Exposition, 2008
    [ Cite ]  
  110. S. Nagel, D. Epple and F. Jondral, "Implementing the TETRA physical layer on Lyrtech's SFF SDR Development Platform," Proc. SDR Forum Technical Conference, 2008
    [ Cite ]  
  111. J. Elsner, P. Rykaczewski, C. Korner and F. Jondral, "Orthogonal complex Hadamard spreading codes for I/Q imbalance mitigation in MC-CDMA systems," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 2661–2665, 2007
    [ Cite ]  
  112. V. Blaschke, H. Jäkel, T. Renk, C. Kloeck and F. Jondral, "Occupation measurements supporting dynamic spectrum allocation for cognitive radio design," Proc. International Conference on Cognitive Radio Oriented Wireless Networks and Communications, pp. 50–57, 2007
    [ Cite ]  
  113. S. Brandes, M. Schnell, U. Berthold and F. Jondral, "OFDM based overlay systems-design challenges and solutions," Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC), 2007
    [ Cite ]  
  114. V. Rodriguez and F. Jondral, "Simple adaptively-prioritised spatially-reusable medium access control through the dutch auction: Qualitative analysis, issues, challenges," Proc. IEEE Symposium on Communications and Vehicular Technology in the Benelux, 2007
    [ Cite ]  
  115. T. Renk, C. Kloeck and F. Jondral, "A cognitive approach to the detection of spectrum holes in wireless networks," Proc. IEEE Consumer Communications and Networking Conference, pp. 1118–1122, 2007
    [ Cite ]  
  116. T. Renk, C. Kloeck, D. Burgkhardt and F. Jondral, "Cooperative communications in wireless networks-a requested relaying protocol," Proc. IST Mobile and Wireless Communications Summit, 2007
    [ Cite ]  
  117. T. Renk, C. Kloeck, F. Jondral, P. Cordier, O. Holland and F. Negredo, "Spectrum measurements supporting reconfiguration in heterogeneous networks," Proc. IST Mobile and Wireless Communications Summit, 2007
    [ Cite ]  
  118. U. Berthold, H. Heimpel and F. Jondral, "Coordination of allocation measurements in OFDM based ad hoc overlay systems," Proc. Int. Conf. Acoustics, Speech, and Signal Process. (ICASSP), 2007
    [ Cite ]  
  119. P. Rykaczewski and F. Jondral, "Blind I/Q imbalance compensation in multipath environments," Proc. IEEE International Symposium on Circuits and Systems, pp. 29–32, 2007
    [ Cite ]  
  120. V. Rodriguez and F. Jondral, "Market-driven regulation for next generation ultra-wide-band technology: Technical-economic management of a 3G cell with coexisting UWB devices," Proc. IST Mobile and Wireless Communications Summit, 2007
    [ Cite ]  
  121. V. Rodriguez and F. Jondral, "Technical-economic impact of UWB personal area networks on a UMTS cell: Market-driven dynamic spectrum allocation revisited," Proc. IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), pp. 585–596, 2007
    [ Cite ]  
  122. V. Blaschke, F. Jondral, S. Nagel, E. Nicollet and D. Ragot, "Wireless Interoperability for Security - WINTSEC," Proc. SDR Forum Technical Conference, 2007
    [ Cite ]  
  123. V. Blaschke and F. Jondral, "A concept for a standard-independent cognitive radio terminal," Proc. European Wireless Conference - Enabling Technologies for Wireless Multimedia Communications, 2006
    [ Cite ]  
  124. U. Berthold, S. Brandes, F. Jondral and M. Schnell, "A framework for crosslayer optimization in OFDM based overlay systems," Proc. International OFDM-Workshop (InOWo06), pp. 253–257, 2006
    [ Cite ]  
  125. V. Blaschke, S. Nagel and F. Jondral, "Mechanisms for the Adaptation of the Physical Layer in a Cognitive Radio," Proc. European Conference on Wireless Technology, pp. 43–46, 2006
    [ Cite ]  
  126. T. Renk, C. Kloeck, C. Koerner and F. Jondral, "Increasing spectral efficiency by managing adjacent channel interference," Proc. International Workshop on Technology and Policy for Accessing Spectrum, pp. 16–es, 2006
    [ Cite ]  
  127. C. Klock, H. Jäkel and F. Jondral, "Introduction of an analytical Figure of Merit for Quality of Service Measurement," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, 2006
    [ Cite ]  
  128. C. Berger, M. Eisenacher, H. Jäkel and F. Jondral, "Pulseshaping in UWB systems using semidefinite programming with non-constant upper bounds," Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC), pp. 1–5, 2006
    [ Cite ]  
  129. P. Rykaczewski, M. Valkama, M. Renfors and F. Jondral, "Non-data-aided I/Q imbalance compensation using measured receiver front-end signals," Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC), pp. 1–5, 2006
    [ Cite ]  
  130. M. Schmidt, H. Jäkel and F. Jondral, "Spectral properties of ultra wideband signals with general time-hopping codes," Proc. IEEEE EUROCON, pp. 124–127, Nov. 2005
    [ Cite ]  
  131. U. Berthold and F. Jondral, "Generalized system model of an overlay environment," Proc. Software Defined Radio Forum Technical Conference (SDR’05), Orange County (CA), USA, 2005
    [ Cite ]  
  132. U. Berthold and F. Jondral, "Guidelines for designing OFDM overlay systems," Proc. IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), pp. 626–629, 2005
    [ Cite ]  
  133. U. Berthold, S. Brandes, F. Jondral and M. Schnell, "Performance of OFDM-CDMA overlay systems considering inaccurate allocation vectors," Proc. International OFDM-Workshop (InOWo05), pp. 230–234, 2005
    [ Cite ]  
  134. C. Kloeck, H. Jäkel and F. Jondral, "Auction Sequence as a New Spectrum Allocation Mechanism," Proc. IST Mobile and Wireless Communications Summit, pp. 19–23, Dresden, Germany, 2005
    [ Cite ]  
  135. C. Kloeck, H. Jäkel and F. Jondral, "Dynamic and local combined pricing, allocation and billing system with cognitive radios," Proc. IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), pp. 73–81, 2005
    [ Cite ]  
  136. C. Kloeck, H. Jäkel and F. Jondral, "Auction sequence as a new resource allocation mechanism," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 240–244, 2005
    [ Cite ]  
  137. F. Jondral, C. Kloeck and H. Jäkel, "Auction sequence as a new resource allocation mechanism," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), 2005
    [ Cite ]  
  138. M. Schmidt, H. Jäkel and F. Jondral, "Influence of the amplitude distribution to the interference of UWB signals on radio receivers," Proc. IEEE Global Commun. Conf. (GLOBECOM), pp. 5–pp, 2005
    [ Cite ]  
  139. M. Schmidt, I. Martoyo, H. Jäkel and F. Jondral, "Theoretical boundaries for combined information estimation and non data-aided channel estimation in UWB," Proc. IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSTA), pp. 82–86, 2004
    [ Cite ]  
  140. U. Berthold, A. Rhiemeier and F. Jondral, "A pipelining approach to operating modular software defined radio," Proc. IEEE/Sarnoff Symposium on Advances in Wired and Wireless Communications, pp. 201–204, 2004
    [ Cite ]  
  141. I. Martoyo, M. Schmidt and F. Jondral, "FDE-RAKE: a PIC multiuser detector for CDMA downlink," Proc. IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSTA), pp. 47–50, 2004
    [ Cite ]  
  142. I. Martoyo, G. Sessler, J. Luber and F. Jondral, "Comparing equalizers and multiuser detectors for CDMA downlink systems," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 1649–1653, 2004
    [ Cite ]  
  143. T. Weiss, M. Spiering and F. Jondral, "Quality of service in spectrum pooling systems," Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC), pp. 345–349, 2004
    [ Cite ]  
  144. M. Öner and F. Jondral, "Air interface recognition for a software radio system exploiting cyclostationarity," Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC), pp. 1947–1951, 2004
    [ Cite ]  
  145. M. Öner and F. Jondral, "Cyclostationarity based air interface recognition for software radio systems," Proc. IEEE Radio and Wireless Conference, pp. 263–266, 2004
    [ Cite ]  
  146. M. Öner and F. Jondral, "Extracting the channel allocation information in a spectrum pooling system using cyclic feature detection," Proc. Eur. Signal Process. Conf. (EUSIPCO), pp. 841–844, 2004
    [ Cite ]  
  147. A. Rhiemeier, T. Weiss and F. Jondral, "A simple and efficient solution to half-frame pipelining for modular software defined radio," Proc. Software Defined Radio Technical Conference and Product Exposition (SDR'04), pp. 119–125, 2004
    [ Cite ]  
  148. A. Rhiemer, T. Weiss and F. Jondral, "Half-frame pipelining for modular software defined radio," Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC), pp. 1664–1668, 2004
    [ Cite ]  
  149. P. Rykaczewski, J. Brakensiek and F. Jondral, "Decision directed methods of I/Q imbalance compensation in OFDM systems," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 484–487, 2004
    [ Cite ]  
  150. P. Rykaczewski, H. Martoyo, Z. Liu and F. Jondral, "Multimode detector and I/Q imbalance compensator in a software defined radio," Proc. IEEE Radio and Wireless Conference, pp. 521–524, 2004
    [ Cite ]  
  151. P. Rykaczewski, J. Brakensiek and F. Jondral, "Towards an analytical model of I/Q imbalance in OFDM based direct conversion receivers," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 1831–1835, 2004
    [ Cite ]  
  152. T. Weiss, J. Hillenbrand, A. Krohn and F. Jondral, "Mutual interference in OFDM-based spectrum pooling systems," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 1873–1877, 2004
    [ Cite ]  
  153. U. Berthold, A. Rhiemeier and F. Jondral, "Spectral partitioning for modular software defined radio," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 1218–1222, 2004
    [ Cite ]  
  154. F. Capar and F. Jondral, "A Rayleigh fading channel model for multicarrier systems: a tapped delay line model," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 181–185, 2004
    [ Cite ]  
  155. T. Weiss, A. Krohn, F. Capar, I. Martoyo and F. Jondral, "Synchronization algorithms and preamble concepts for spectrum pooling systems," Proc. IST Mobile and Wireless Telecommunications Summit, pp. 788–792, 2003
    [ Cite ]  
  156. M. Schmidt and F. Jondral, "Ultra wideband transmission based on MC-CDMA," Proc. IEEE Global Commun. Conf. (GLOBECOM), pp. 749–753, 2003
    [ Cite ]  
  157. A. Rhiemeier and F. Jondral, "Software partitioning and hardware architecture for modular SDR systems," Proc. Software Defined Radio Technical Conference and Product Exposition (SDR'03), pp. 9–15, 2003
    [ Cite ]  
  158. A. Rhiemeier and F. Jondral, "On the design of modular software defined radio systems," Proc. IEE Colloquium on DSP enabled Radio, 2003
    [ Cite ]  
  159. F. Capar, I. Martoyo, T. Weiss and F. Jondral, "Analysis of coexistence strategies for cellular and wireless local area networks," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1812–1816, 2003
    [ Cite ]  
  160. L. Martoyo, T. Weiss, F. Capar and F. Jondral, "Low complexity CDMA downlink receiver based on frequency domain equalization," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 987–991, 2003
    [ Cite ]  
  161. M. Öner and F. Jondral, "Extracting the channel allocation information in a spectrum pooling system using a prefilter delay and multiply nonlinearity," Proc. IEEE Workshop on Statistical Signal Processing, pp. 46–49, 2003
    [ Cite ]  
  162. T. Weiss, J. Hillenbrand, A. Krohn and F. Jondral, "Efficient signaling of spectral resources in spectrum pooling systems," Proc. Symposium on Communications and Vehicular Technology (SCVT), 2003
    [ Cite ]  
  163. F. Capar, I. Martoyo, T. Weiss and F. Jondral, "Comparison of bandwidth utilization for controlled and uncontrolled channel assignment in a spectrum pooling system," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 1069–1073, 2002
    [ Cite ]  
  164. R. Machauer and F. Jondral, "FFT-speed and windowed multiuser detector for UTRA-FDD high rate data mode," Proc. IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSTA), pp. 712–716, 2002
    [ Cite ]  
  165. I. Martoyo, H. Schober and F. Jondral, "CDMA versus OFDM, a performance comparison in selective fading channels," Proceedings of 6th International Symposium on Spread Spectrum Techniques and Applications, pp. 139–143, 2002
    [ Cite ]  
  166. H. Schober, F. Jondral, R. Stirling-Gallacher and Z. Wang, "Delay spread estimation for OFDM based mobile communication systems," Proc. European Wireless Conference, pp. 625–28, 2002
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  167. H. Schober and F. Jondral, "Velocity estimation for OFDM based communication systems," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 715–718, 2002
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  168. G. Sessler and F. Jondral, "Low complexity polynomial expansion multiuser detector with strong near-far resistance," Proc. Vehicular Technology Conference, pp. 1869–1872, 2002
    [ Cite ]  
  169. F. Jondral, "Parameter controlled software defined radio," Software Defined Radio Technical Conference, San Diego, CA, USA, 2002
    [ Cite ]  
  170. I. Martoyo and F. Jondral, "Frequency domain equalization for the downlink of CDMA mobile radio systems," Proc. IEEE International Symposium on Advances in Wireless Communications (ISWC), 2002
    [ Cite ]  
  171. G. Sessler and F. Jondral, "Rapid iterative multiuser detection for utra-tdd in a time-variant multipath environment," Proc. IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSTA), pp. 702–706, 2002
    [ Cite ]  
  172. G. Sessler, I. Martoyo and F. Jondral, "RBF based multiuser detectors for UTRA-TDD," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 484–486, 2001
    [ Cite ]  
  173. R. Machauer, M. Iurascu and F. Jondral, "FFT speed multiuser detection for high rate data mode in UTRA-FDD," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 502–505, 2001
    [ Cite ]  
  174. G. Sessler and F. Jondral, "Multiuser detection for UTRA-TDD based on polynomial expansion," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 2290–2293, 2001
    [ Cite ]  
  175. H. Schober, F. Jondral, R. Stirling-Gallacher and Z. Wang, "Adaptive channel estimation for OFDM based high speed mobile communication systems," Proc. IEEE International Conference on Third Generation Wireless and Beyond 2001, pp. 392–397, 2001
    [ Cite ]  
  176. R. Machauer, A. Wiesler and F. Jondral, "Comparison of UTRA-FDD and CDAM2000 with Intra and Intercell Interference," Proc. IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSTA), pp. 652–656, 2000
    [ Cite ]  
  177. F. Jondral, A. Wiesler and R. Machauer, "A software defined radio structure for 2nd and 3rd generation mobile communications standards," Proc. IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSTA), pp. 637–640, 2000
    [ Cite ]  
  178. A. Wiesler, O. Muller and F. Jondral, "MAP-algorithm with fixed-point representation for software radios," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 2962–2968, 2000
    [ Cite ]  
  179. R. Machauer, A. Wiesler and F. Jondral, "Comparison of UTRA-FDD and CDMA2000 with intra-and intercell interference," Proc. IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSTA), pp. 652–656, 2000
    [ Cite ]  
  180. A. Wiesler, H. Schober, R. Machauer and F. Jondral, "Software radio structure for UMTS and second generation mobile communication systems," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 939–942, 1999
    [ Cite ]  
  181. H. Ketterer, F. Jondral and A. Costa, "Classification of modulation modes using time-frequency methods," Proc. Int. Conf. Acoustics, Speech, and Signal Process. (ICASSP), pp. 2471–2474, 1999
    [ Cite ]  
  182. G. Wetzker, M. Dukek, H. Ernst and F. Jondral, "Multi-carrier modulation schemes for frequency-selective fading channels," Proc. International Conference on Universal Personal Communications (ICUPC), pp. 939–943, 1998
    [ Cite ]  
  183. A. Wiesler and F. Jondral, "Software radio structure for second generation mobile communication systems," Proc. IEEE Vehicular Technology Conference, pp. 2363–2367, 1998
    [ Cite ]  
  184. C. Delfs and F. Jondral, "Classification of transient time-varying signals using dft and wavelet packet based methods," Proc. Int. Conf. Acoustics, Speech, and Signal Process. (ICASSP), pp. 1569–1572, 1998
    [ Cite ]  
  185. G. Wetzker, C. Sieborger, U. Kaage and F. Jondral, "Maximum likelihood DSSS code acquisition in the presence of multipath propagation, Doppler shift and data modulation," Proc. International Symposium on Spread Spectrum Techniques and Applications (ISSSTA), pp. 441–445, 1998
    [ Cite ]  
  186. F. Jondral, R. Machauer and A. Wiesler, "Comparison of GMSK and linear approximated GMSK for use in Software Radio," Proc. International Symposium on Spread Spectrum Techniques and Applications, pp. 557–559, 1998
    [ Cite ]  
  187. A. Wiesler, R. Machauer and F. Jondral, "Comparison of GMSK and linear approximated GMSK for use in software radio," Proc. International Symposium on Spread Spectrum Techniques and Applications (ISSSTA), pp. 557–560, 1998
    [ Cite ]  
  188. G. Wetzker, U. Kaage and F. Jondral, "A simulation method for Doppler spectra," Proc. International Symposium on Spread Spectrum Techniques and Applications (ISSSTA), pp. 517–521, 1998
    [ Cite ]  
  189. C. Delfs and F. Jondral, "New aspects on classification using translation-invariant wavelet packet transforms," Proc. 2nd IEEE UK Symp. Appl. Time-Frequency Time-Scale Methods, pp. 73–76, Warwick, UK, 1997
    [ Cite ]  
  190. M. Kohl, A. Wiesler and F. Jondral, "Suppression of interferences over SATCOM links with transparent transponders," Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC), pp. 1024–1027, 1997
    [ Cite ]  
  191. C. Delfs and F. Jondral, "Classification of piano sounds using time-frequency signal analysis," Proc. Int. Conf. Acoustics, Speech, and Signal Process. (ICASSP), pp. 2093–2096, 1997
    [ Cite ]  
  192. G. Wetzker and F. Jondral, "Simulation methods for time-variant wideband channels," Proc. IEEE Global Commun. Conf. (GLOBECOM), pp. 1557–1561, 1997
    [ Cite ]  
  193. M. Kohl and F. Jondral, "Simulation of land mobile satcom links using different orbits and modulation modes," Proc. Eur. Signal Process. Conf. (EUSIPCO), 1996
    [ Cite ]  
  194. G. Wetzker and F. Jondral, "Incoherent acquisition of DSSS signals in presence of Doppler shifts," Proc. International Symposium on Spread Spectrum Techniques and Applications (ISSSTA), pp. 166–170, 1996
    [ Cite ]