OFDM Based Cooperative Sequential Spectrum Sensing

Spectrum sensing is the most significant technique in Cognitive Radio system. So in this paper for the terrestrial television broadcasting (ISDB-T) system of integrated services digital broadcasting, i develop the algorithm based energy detector with low detection delay using sequential hypothesis testing and matched filter detector of spectrum sensing used on OFDM system which is use as a primary signal. For this i develop Cooperative sequential detection algorithms based on energy detectors and the autocorrelation property of cyclic prefix (CP) used in OFDM systems i modify the result of detectors to mitigate the effect of impairment and also compare the result of detectors. The performance of OFDM is assessed by using computer simulations performed by using MATLAB. Keywords-Distributed algorithm, energy detection, matched filter detection, OFDM system, spectrum sensing. ——————————  ——————————