Wideband Spectrum Sensing for Cognitive Radio with Multiple Antennas

Abstract

In this paper, we propose a novel wideband spectrum sensing scheme for the cognitive radio with multiple receive antennas. By employing the likelihood ratio test based on the observations in all subbands for sensing a subband in the wideband spectrum, the proposed scheme exhibits better performance than conventional schemes. Through computer simulations, it is confirmed that the proposed scheme provides a significant performance gain over conventional schemes.