Cooperative cognitive radio with obstacles on the sensing channels

This paper investigates the performance of cooperative cognitive radio with obstacles on the sensing channels. The analysis focuses on weighted summation combining in the fusion center. In this paper we propose Rayleigh, Rician, and Nakagami-m channel models to handle the presence of obstacles in the sensing channels. The analysis is based on the central limit theorem. The results are presented in the form of relation between detection probability and SNR with decision threshold as the parameter and the relation between detection probability and decision threshold with SNR as the parameter.