A flexible cooperative spectrum sensing scheme for cognitive radio networks

IEICE Electronics Express

Guoping Zhang¹  Hongxing Xia¹  Hongbo Xu¹ 

[1] College of Physical Science and Technology, Huazhong Normal University

关键词: noise uncertainty;    three-threshold;    cooperative sensing;    cognitive radio;   

DOI  :  10.1587/elex.8.542

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(8)Cited-By(1)In this paper, we propose a three-threshold decision based cooperative spectrum sensing algorithm (TTDCSS) with two rounds cooperation. Specifically, after the failure of the first cooperation, cognitive users begin to report the second local decision bit to the fusion center (FC) to perform a second cooperation, thus sensing failure is eliminated. Furthermore, by integrating uncertainty of noise variance, we propose a simple method to set local decision thresholds. Numerical results show that the TTDCSS algorithm is superior to the conventional double-threshold decision based sensing methods in the performance with a little increase of sensing bits.

【 授权许可】

Unknown