Experimental Study of an Underlay Cognitive Radio System: Model Validation and Demonstration
Hanna Becker, Ankit Kaushik, Shree Krishna Sharma, Symeon Chatzinotas, Friedrich K. Jondral · Lecture notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering · 2016
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”.)