Performance improvement of CSS over imperfect reporting using diversity reception in cognitive radio networks

摘要

Purpose - This paper aims to discuss over imperfect reporting channel the performance of cooperative spectrum sensing (CSS). It is investigated that imperfect reporting channel introduces some lower bound in false alarm probability (Pf). The lower bound of probability of false alarm linearly increases with the probability of reporting error. Design/methodology/approach - To solve this problem, a transmit diversity-based CSS method is proposed, and to improve the detection performance, square law selection (SLS) diversity is used. Findings - It is observed that detection probability increases up to 11.55 per cent when SLS diversity is applied, and lower bound Qf decreases up to 80 per cent when transmit diversity is applied. Originality/value - No literature is available to the best of the authors' knowledge that measures the performance of CSS with respect to parameters as reported in this paper.