Cooperative wideband spectrum sensing over Rician and Nakagami fading channels

Abstract

Spectrum sensing technique is the most crucial factor that determines the performance of Cognitive Radio (CR) systems. Wideband spectrum sensing using Nyquist and sub Nyquist sampling rates proved to have better performance than other types of spectrum sensing. Multi-rate spectrum sensing technique have advantage over other wideband spectrum sensing technique regarding the probability of detection, probability of false alarm and the implementation complexities. In this paper, analysis of the effect of two different fading channels namely; Rician fading channels (with different values of Rice factor K) and Nakagami-m channel (with different values of Nakagami factor m) on the performance of multi-rate spectrum sensing systems are presented. Results are consistent with previous published studies on the effect of other types of fading namely; Rayleigh and log-normal fading channels.