• Software Defined Radio, Cognitive Radio
• Frequency Agile Wireless Networks / Ad Hoc Networks
• Spectrum Regulation 

• Implementation of a DRM+ transmitter in the GNU Radio software radio framework (Felix Wunsch)
• Teamprojekt WS 2010/2011 (Eigenwertbasierte Spektralanalyse) und WS 2009/2010 (SDR-basierte Spektralanalyse) - siehe CGRAN
• Implementing Thomson's Multitaper Method in GNU Radio (Gerald Baier)
• Implementing the Least Squares Covariance Method for Spectral Estimation in C++ (Moritz Krüger)
• Impact of Frequency Division Multiple Access on the Capacity of Ad Hoc Networks (Christian Mohr)
• Modeling of Wireless Multi-Channel Ad Hoc Networks using Stochastic Geometry (Jörg Schmid)
• Bounds and Numerical Computation of Interference Distributions Generated by Poisson Point Process Geometries (Reinhard Gentz)
• Applications of Compressed Sensing in a Cognitive Radio Context (Martin Braun)
• GNU Radio / Speex: Digital Narrow Band Voice Transmission (Kshama Nagaraj)
• Wireless-Networks-in-the-Loop (Kshama Nagaraj)
• Design of Multi-Channel MACs in Frequency Hopping Networks (Francisco Ortiz)

Weitere Arbeiten in meinem Forschungsbereich können bei Bedarf vergeben werden, für ein persönliches Gespräch stehe ich jederzeit gerne zur Verfügung.

Auch eigene Ideen können umgesetzt werden, sprechen Sie mich einfach an.

Zeitschriften

• Jens Elsner:
  Interference Mitigation in Frequency Hopping Ad Hoc Networks
  Forschungsberichte aus dem Institut für Nachrichtentechnik des Karlsruher Instituts für Technologie, Band 29, Karlsruhe 2012, ISSN 1433-3821 (Dissertation)
  
• Jens P. Elsner, Hosung Park, Jeonghoon Mo, Friedrich K. Jondral:
  Multi-Level Orthogonal Hopping Rendezvous
  IEEE Communications Letters, Vol. 16, No. 8, August 2012, pp. 1220 - 1223
  [ Abstract ]
  
• Ralph Tanbourgi, Jens P. Elsner, Holger Jäkel, Friedrich K. Jondral:
  Adaptive Frequency Hopping in Ad Hoc Networks with Rayleigh Fading and Imperfect Sensing
  IEEE Wireless Communications Letters, Vol. 1, No. 3, June 2012, pp. 185 - 188 
  [ Abstract ]
  
• Nico Grove, Arnold Picot, Friedrich K. Jondral, Jens Elsner:
  Why the Digital Dividend will not close the Digital Divide
  Intermedia, 39 (2). pp. 32-37. ISSN 0309-118X, May 2011
  [ Abstract ]
  
• Jens Elsner, Ralph Tanbourgi, Friedrich K. Jondral:
  O propusknoj sposobnosti besprovodnyx mnogokanal'nyx odnorangovyx setej s mestnym planirovaniem castotnogo razdelenija kanalov
  Informacionno-upravljajuscie sistemy, No. 6, 2010, pp. 70-76, ISSN 1684-8853 (in Russian)
  
• Jens P. Elsner, Christian Körner and Friedrich K. Jondral
  Centralized Modeling of the Communication Space for Spectral Awareness in Cognitive Radio Networks
  ACM SIGMOBILE Mobile Computing and Communications Review, Volume 13, Issue 2 (April 2009)
  [ Abstract ]
  

Konferenzen

• Martin Braun, Nico Otterbach, Jens Elsner, Friedrich K. Jondral:
  Rapid Prototyping of a Frequency Hopping Ad Hoc Network System
  Proceedings of 23rd Virginia Tech Symposium on Wireless Communications, Blacksburg, May 2013
  [ Abstract ]
  
• Sebastian Koslowski, Jens P. Elsner, Friedrich K. Jondral, Stefan Couturier, Cédric Keip, Olaf Bettinger:
  Distributed Localized Interference Avoidance for Dynamic Frequency Hopping ad hoc Networks
  2013 Wireless Innovation Forum Conference on Communications Technologies and Software Defined Radio (SDR-WInnComm-2013), Washington D.C., Jan. 8-10, 2013
  [ Abstract/ Folien ]
  
• Jens P. Elsner, Ralph Tanbourgi, Joerg Schmid, Friedrich K. Jondral:
  Hopping Strategies for Adaptive FH-CDMA Ad Hoc Networks under External Interference (Folien)
  IEEE International Conference on Communications, Ottawa, Canada, Jun 10 - 15, 2012
  [ Abstract ]
  
• Ralph Tanbourgi, Jens P. Elsner, Holger Jäkel, Friedrich K. Jondral:
  Optimizing practical adaptive frequency hopping and medium access control in ad hoc networks (invited)
  Eighth Workshop on Spatial Stochastic Models for Wireless Networks (SpaSWiN) at IEEE WiOpt 2012, May 14, 2012, Paderborn, Germany
  [ Abstract ]
  
• Jens P. Elsner, Ralph Tanbourgi, Friedrich K. Jondral:
  Multiple Access Interference Mitigation Through Multi-Level Locally Orthogonal FH-CDMA
  The 2011 Military Communications Conference, Baltimore, Maryland, USA, Nov 7 - 10, 2011
  [ Abstract ]
  
• Jens Elsner, Christian Mohr, Friedrich K. Jondral:
  Capacity Regions of Wireless Multi-Channel Ad Hoc Networks (Folien)
  2011 IEEE 74th Vehicular Technology Conference, San Francisco, USA, Sep 5-8, 2011
  [ Abstract ]
  
• Moritz Fischer, Martin Braun, Jens P. Elsner, Friedrich K. Jondral:
  An Over-the-Air Reconfiguration API for Experimental Cognitive Radio Setups
  2011 Wireless Innovation Forum European Conference on Communications Technologies and Software Defined Radios (SDR'11-WInnComm-Europe), 22-24 June, Brussels, Belgium
  [ Abstract ]
  
• Ralph Tanbourgi, Jens P. Elsner, Holger Jäkel, Friedrich K. Jondral:
  Lower Bounds on the Success Probability for ad hoc Networks with local FDMA scheduling
  Seventh Workshop on Spatial Stochastic Models for Wireless Networks at IEEE WiOpt 2011, May 9, 2011, Princeton, NJ, USA
  [ Abstract ]
  
• Ralph Tanbourgi, Jens P. Elsner, Friedrich K. Jondral:
  Lowering Outage Probability in Ad Hoc Networks by Nearest Neighbor FDMA Scheduling
  2011 Proceedings IEEE Wireless Communications & Networking Conference 2011, Cancun, Mexico
  [ Abstract ]
  
• Fabrizio Massaro, Jens Elsner, Florio Dalla Vedova, Friedrich K. Jondral:
  Components for Software Radio Wideband Receivers: A space segment survey
  SDR'10 Technical Conference, Washington DC, USA, Nov 30 - Dec 3, 2010
  [ Abstract ]
  
• Jens P. Elsner, Ralph Tanbourgi, Friedrich K. Jondral:
  A Note on Local Receive Channel Scheduling versus Transmit Channel Scheduling in Wireless Multi-Channel Ad Hoc Networks (Folien)
  ICCIA'10, Tianjin, China, Dec 3-5 2010
  [ Abstract ]
  
• Jens P. Elsner, Ralph Tanbourgi, Friedrich K. Jondral:
  On the Transmission Capacity of Wireless Multi-Channel Ad Hoc Networks with local FDMA scheduling (Folien)
  International Conference on Ultra Modern Telecommunications (ICUMT), Moscow, Russia, October 2010
  [ Abstract ]
  
• Sebastian Koslowski, Martin Braun, Jens Elsner, Friedrich K. Jondral:
  Wireless Networks In-the-Loop: Emulating an RF front-end in GNU Radio (Folien)
  SDR Forum 2010 European Reconfigurable Radio Technologies Workshop, Mainz, June 25, 2010
  [ Abstract ]
  
• Jens Elsner, Martin Braun, Stefan Nagel, Kshama Nagaraj, Friedrich K. Jondral:
  Wireless Networks In-the-Loop: Software Radio as the Enabler (Folien)
  Software Defined Radio Forum Technical Conference, Washington DC, December 1-4, 2009
  [ Abstract ]
  
• Jens Elsner, Nico Grove, Dennis Burgkhardt, Friedrich K. Jondral, Arnold Picot:
  Convergence of Mobile Communications and Broadcasting: A Long-Term Perspective (Folien)
  8th Conference on Applied Infrastructure Research, Berlin, October 9-10, 2009
  [ Abstract ]
  
• Arnold Picot, Friedrich Jondral, Jens Elsner, Nico Grove:
  Why the Digital Dividend will not close the Digital Divide
  Fourth International Conference on Economics and Management of Networks, Sarajevo, Sep. 3 - 5, 2009
  [ Abstract ]
  
• Jens Elsner, Martin Braun, Leonid Chaichenets, Friedrich Jondral:
  On linearly precompressed non-parametric spectrum estimation
  Proceedings of the IEEE Workshop on Statistical Signal Processing Cardiff, Wales, UK, Aug.31 - Sept. 3, 2009
  
• Jens Elsner, Stefan Taing, Nico Grove:
  Getting the next 5 billion online: Counteracting Digital Divide in Asia
  Harvard Project for Asian and International Relations Academic Conference, Seoul, Aug. 14 - 17, 2009
  [ Abstract ]
  
• Jens P. Elsner, Leonid Chaichenets, Hanns-Ulrich Dehner and Friedrich K. Jondral
  On Regulation of Spectrum Sharing: An Analysis Supporting a Distributed Pilot Channel
  Proceedings of 4th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, Hannover, June 2009
  
• Jens P. Elsner, Martin Braun, Holger Jäkel and Friedrich K. Jondral
  Compressed Spectrum Estimation for Cognitive Radios
  Proceedings of 19th Virginia Tech Symposium on Wireless Communications, Blacksburg, June 2009
  
• Martin Braun, Jens P. Elsner and Friedrich K. Jondral
  Signal Detection for Cognitive Radios with Smashed Filtering
  Proceedings of VTC Spring 2009
  [ Abstract ]
  
• Stefan Nagel, Volker Blaschke, Jens Elsner, Friedrich K. Jondral, Dimitrios Symeonidis
  Certification for SDRs in new Public and Governmental Security Systems
  Proceedings of the SDR Forum Technical Conference 2008, Washington D.C., October 26-30, 2008
  [ Abstract ]
  
• J. P. Elsner, C. Körner and F. K. Jondral
  Non-parametric Modeling with Gaussian Processes for Spatial Radio-Scene Analysis
  5th IEEE Consumer Communications and Networking Conference (CCNC), January 10 - 12, 2008, Las Vegas, USA
  [ Abstract ]
  
• J. P. Elsner, P. Rykaczewski, C. Körner and F. K. Jondral
  Orthogonal Complex Hadamard Spreading Codes for I/Q Imbalance Mitigation in MC-CDMA Systems
  IEEE Vehicular Technology Conference (VTC), April 22-25, 2007, Dublin, Ireland
  [ Abstract ]

Technische Berichte

• Nico Grove, Jens Elsner:
  Submission to the Australian Government, Department of Broadband, Communications and the Digital Economy
  addressing questions of the Digital Dividend Green Paper, 2010
• Jens Elsner, Friedrich Jondral:
  Regulierungsziel Effiziente Frequenznutzung
  BMWi, 2009

Vorträge

• Wireless networks in-the-loop, VTT Research Centre of Finland, February 17, 2012
• Modeling of Multi-Channel Ad Hoc Networks with Stochastic Geometry, Technische Universität München, January 10, 2011
• Regulation of Shared Spectrum - Technical Issues arising in Heterogenous Wireless Networks, KIT International Round Table on Radio Diversity, Karlsruhe, November 16, 2009
• Cognitive and Software Defined Radio - An Engineering Perspective to Challenges of Spectrum Regulation, European Reconfigurable Technologies Workshop, Madrid, April 23, 2009

Patentanmeldungen

• Jens Elsner, Ralph Tanbourgi:
  Mehrebenen-Frequenzsprungverfahren zur interferenzreduzierten Kommunikation in einem Ad-Hoc-Netzwerk
  25.03.2011, 102011015095.1 (Deutsches Patent- und Markenamt)
• Gerhard Merettig, Kai Waslowski, Maximilian Hauske, Jens Elsner:
  Optoelektronischer Sensor und Verfahren zum Senden und Empfangen von Licht
  26.04.2010, 10160982.4 (European Patent Office)