Study and Optimization of Cooperative Spectrum Sensing in OFDM Cognitive Radio Networks
In this paper, a cooperative sensing algorithm for OFDM is proposed in this paper based on the performance analysis of ONPD algorithm, then the system weight vector is optimized and the closed form expression of optimal weight vector is obtained using the maximum improved deflection coefficient. Theoretical analysis and simulation results demonstrate the remarkable improvement of proposed algorithm on detection performance compared with the classical cooperation detection algorithm.
Keywords: Cyclic prefix; Cooperative sensing; Deflection coefficient; OFDM; Cognitive radio
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ABOUT THE AUTHORS
Yingxue Li
School of Electronic Engineering, Beijing University of Posts and Telecommunications Beijing, 100876, China
Shuqun Shen
University of Posts and Telecommunications Beijing, 100876, China
Qiucai Wang
School of information and communication engineering, Beijing University of Posts and Telecommunications Beijing, 100876, China
Yingxue Li
School of Electronic Engineering, Beijing University of Posts and Telecommunications Beijing, 100876, China
Shuqun Shen
University of Posts and Telecommunications Beijing, 100876, China
Qiucai Wang
School of information and communication engineering, Beijing University of Posts and Telecommunications Beijing, 100876, China
