Experimental Study of an Underlay Cognitive Radio System: Model Validation and Demonstration

  • Hanna BeckerEmail author
  • Ankit Kaushik
  • Shree Krishna Sharma
  • Symeon Chatzinotas
  • Friedrich Jondral
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 172)


Cognitive radio is one of the potential contenders that address the problem of spectrum scarcity by making efficient use of the currently allocated spectrum below 6 GHz. A secondary access to the licensed spectrum is only possible, if the cognitive radio systems restrict the interference to the primary systems. However, the performance analysis of such a cognitive radio system is a challenging task. Currently, performance evaluation of underlay systems is limited to theoretical analysis. Most of the existing theoretical investigations make certain assumptions in order to sustain analytical tractability, which could be unrealistic from the deployment perspective. Motivated by this fact, in this work, we validate the performance of an underlay system by means of laboratory measurements, and consequently propose a hardware demonstrator of such a system. Moreover, we present a graphical user interface to provide insights to the working of the proposed demonstrator and highlight the main issues faced during this experimental study. (This work was partially supported by the National Research Fund, Luxembourg under the CORE projects “SeMIGod” and “SATSENT”.)


Cognitive radio Underlay system Power control Dynamic access Empirical validation Demonstrator 


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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2016

Authors and Affiliations

  • Hanna Becker
    • 1
    Email author
  • Ankit Kaushik
    • 1
  • Shree Krishna Sharma
    • 2
  • Symeon Chatzinotas
    • 2
  • Friedrich Jondral
    • 1
  1. 1.Communications Engineering LabKarlsruhe Institute of Technology (KIT)KarlsruheGermany
  2. 2.SnT -, University of LuxembourgLuxembourg CityLuxembourg

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