Dr.-Ing. Holger Jäkel

Dr.-Ing. Holger Jäkel

  • Hertzstr. 16
    76185 Karlsruhe

Research areas

  • Signal processing in communications
  • Information theory
  • Channel coding

Teaching

  • Probability Theory (5 ECTS, B.Sc., Winter term, taught in German)
  • Statistical Methods of Information Processing (4 ECTS, B.Sc., Winter term, taught in German)
  • Methods of Communications Engineering (6 ECTS, B.Sc., Summer term, taught in German)
  • Advanced Communications Engineering (6 ECTS, M.Sc., Winter term)
  • Applied Information Theory (6 ECTS, MSc., Winter term)
  • Signal Processing in Communications (6 ECTS, Summer term, taught in German)
  • Seminar: Selected Topics in Communications (4 ECTS, M.Sc., Summer and Winter term)
  • Course Counseling & Approval: http://www.cel.kit.edu/modelle.php
  • Communications Engineering I (Summer term 2016, 2017, 2018)
  • Signals and Systems (Winter term 2019/20)

 

Current Theses

Theses

Open Theses

Title Supervisor Type
Design of Quasi-Cyclic LDPC Codes for a Unified Coding Scheme Holger Jäkel, Jonathan Mandelbaum BA/MA
Code Design of Non-binary Parity-Check Codes Holger Jäkel, Jonathan Mandelbaum MA

Theses In Progress

Title Supervisor Type

There are currently no theses in progress.

Full List of Publications

Journal papers

  1. A. Tsouchlos, H. Jäkel and L. Schmalen, "List-based proximal decoding for LDPC codes," IEEE Commun. Lett., vol. 28, no. 11, pp. 2464-2467, Nov. 2024, https://arxiv.org/abs/2409.07278
    [ Cite ]  
  2. 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
    [ Cite ]  
  3. 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
    [ Cite ]  
  4. 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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  5. 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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  6. 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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  7. 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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  8. 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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  9. 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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  10. 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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  11. 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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  12. 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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  13. H. Jäkel and M. Eisenacher, "Impulsbasierte UWB-Systeme-ein Uberblick," Telekommunikation Aktuell, vol. 60, no. 1/3, pp. 1, Jan. 2006
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  14. 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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  15. 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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  16. H. Jäkel and U. Kiencke, "Ein Beitrag zur Systemtheorie ereignisdiskreter Systeme–Teil 2: Der Bildbereich (A Note on System Theoretic Elements of Discrete Event Systems–Part 2: Range Domain)," at-Automatisierungstechnik, vol. 51, no. 3, pp. 128–135, 2003
    [ Cite ]  
  17. H. Jäkel and U. Kiencke, "Ein Beitrag zur Systemtheorie ereignisdiskreter Systeme–Teil 1: Der Zeitbereich (A Note on System Theoretic Elements of Discrete Event Systems–Part 1: Time Domain)," at-Automatisierungstechnik, vol. 51, no. 2, pp. 78–85, 2003
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  18. H. Jäkel, T. Urbancsek and C. Thierer, "A Note on the Calculation of a Discrete-Event-System's Transfer Function," Reports on Industrial Information Technology (Vol. 5), vol. 30, pp. 978–3826712111, 2002
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Book chapters

  1. 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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  2. 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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Conference papers

  1. H. Lulei, J. Mandelbaum, M. Rübenacke, H. Jäkel, S. ten Brink and L. Schmalen, "Subcode ensemble decoding of polar codes," Proc. Intl. Symp. on Topics in Coding (ISTC), Los Angeles, CA, USA, Aug. 2025, https://arxiv.org/abs/2504.17511
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  2. J. Mandelbaum, H. Jäkel and L. Schmalen, "Subcode ensemble decoding of linear block codes," Proc. IEEE Int. Symp. Inform. Theory (ISIT), Ann Arbor, MI, USA, Jun. 2025, https://arxiv.org/abs/2501.11993
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  3. F. Ritter, J. Mandelbaum, A. Fengler, H. Jäkel and L. Schmalen, "Removal of small weight stopping sets for asynchronous unsourced multiple access," Proc. IEEE Int. Symp. Inform. Theory (ISIT), Ann Arbor, MI, USA, Jun. 2025, https://arxiv.org/abs/2501.12186
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  4. J. Mandelbaum, S. Miao, H. Jäkel and L. Schmalen, "Endomorphisms of linear block codes," Proc. IEEE Int. Symp. Inform. Theory (ISIT), Athens, Greece, Jul. 2024, https://arxiv.org/abs/2402.00562
    [ Cite ]  [ Presentation ]  
  5. S. Miao, J. Mandelbaum, H. Jäkel and L. Schmalen, "A joint code and belief propagation decoder design for quantum LDPC codes," Proc. IEEE Int. Symp. Inform. Theory (ISIT), Athens, Greece, Jul. 2024, https://arxiv.org/abs/2401.06874
    [ Cite ]  [ Presentation ]  
  6. S. Miao, J. Mandelbaum, L. Rapp, H. Jäkel and L. Schmalen, "Performance analysis of generalized product codes with irregular degree distribution," Proc. IEEE Int. Symp. Inform. Theory (ISIT), Athens, Greece, Jul. 2024, https://arxiv.org/abs/2401.16977
    [ Cite ]  [ Presentation ]  
  7. J. Mandelbaum, S. Miao, N. A. Schwendemann, H. Jäkel and L. Schmalen, "Improved generalized automorphism belief propagation decoding," Proc. International Symposium on Wireless Communication Systems (ISWCS), Rio de Janeiro, Brazil, Jul. 2024, https://arxiv.org/abs/2406.02012
    [ Cite ]  [ Presentation ]  
  8. J. Mandelbaum, H. Jäkel and L. Schmalen, "Generalized automorphisms of channel codes: Properties, code design, and a decoder," Proc. International Symposium on Topics in Coding (ISTC), Brest, France, Sep. 2023, https://arxiv.org/abs/2304.14379
    [ Cite ]  [ Presentation ]  
  9. J. Voigt, H. Jäkel and L. Schmalen, "Semi-deterministic subspace selection for sparse recursive projection-aggregation decoding of Reed-Muller codes," Proc. Intl. Workshop on Smart Antennas and ITG Conf. on Systems, Communications, and Coding (WSA-SCC), Braunschweig, Germany, Feb. 2023, https://arxiv.org/abs/2211.01204
    [ Cite ]  [ Code ]
  10. 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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  11. 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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  12. 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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  13. 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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  14. 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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  15. 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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  16. 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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  17. 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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  18. 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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  19. 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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  20. 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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  21. 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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  22. 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
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  23. 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
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  24. 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
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  25. 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
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  26. 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
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  27. 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
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  28. 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
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  29. 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
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  30. 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
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  31. 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
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  32. 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
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  33. 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
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  34. 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
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  35. 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
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  36. 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
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  37. 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
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  38. 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
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  39. 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
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  40. 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
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  41. 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
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  42. 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 ]  
  43. 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
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  44. 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
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  45. 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
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  46. 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
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  47. 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
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  48. 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 ]  
  49. 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
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  50. 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
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  51. 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
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  52. 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
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  53. 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
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  54. 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
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  55. 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
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  56. F. Jondral, C. Kloeck and H. Jäkel, "Auction sequence as a new resource allocation mechanism," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), 2005
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  57. 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
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  58. 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
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  59. H. Jäkel and U. Kiencke, "Transfer Function of an ARMA-Structure for Discrete Event Systems," Proc. International Conference on Control and Applications, pp. 338-343, 2002
    [ Cite ]