Abstract: Signal detection performance in cognitive radio architecture is enhanced by the cooperation of sensing detectors if the fading and shadowing effects exist on the channel. A cooperative spectrum sensing technique in cognitive radio networks based on two-sample Kolmogorov-Smirnov test is proposed in this paper and proposed sensing scheme is examined under Rician fading channel. The performance of the algorithm is investigated on real communication environment and real data; results show that two-sample Kolmogorov-Smirnov test based sensing offers robust and superior performance under Rician fading channel with low signal-to-noise ratio (SNR) values.

Keywords: Cognitive radio, Cooperative spectrum sensing, Two-sample Kolmogorov-Smirnov test, Rician fading channel.