Optimal multiband spectrum sensing in cognitive radio

IEICE Electronics Express

Wen Zhang¹  Jiawei Yang¹  Li Zhang²  Qi Yan¹ 

[1] Information Science Institute, State Key Laboratory of Integrated Service Networks, Xidian University;Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University

关键词: cognitive radio;    spectrum detection;    energy detection;    OFDM;    throughput;   

DOI  :  10.1587/elex.7.1557

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(7)Cited-By(2)In order to maximize the throughput in cognitive radio when primary communication system is an OFDM system, the optimal spectrum sensing is addressed. Firstly the single user sensing is discussed, and it is proved that the optimal sensing time that maximizes the throughput exists. In addition, the cooperative sensing using k-out-of-N fusion rule is considered. By analyzing the mathematical model of the throughput, a joint searching method is proposed to obtain the optimal sensing time and fusion rules which can maximize the throughput. In the simulation results, the correctness of theoretical analysis is verified.

【 授权许可】

Unknown