Feasibility of cooperative spectrum sensing based on clustered beamforming

Multi-antenna-based spatial multiplexing exhibit high potential for enhancing the system performance of future cognitive radio networks [1]-[3]. This paper proposes a novel cooperative spectrum sensing approach that utilizes coordinated beamforming and node clustering. It provides a generic framework that can be exploited by any cooperative spectrum sensing and fusion technique. The performance analysis shows that the proposed approach decreases the average sensing Bayesian risk and can achieve higher detection probability of more than an order of magnitude.