数据采集与处理2011，Vol.26Issue(6)：691-696,6.
认知无线电协作频谱感知机制的优化
Optimization for Cooperative Spectrum Sensing in Cognitive Radio Networks
摘要
Abstract
The objective of spectrum sensing is to provide more spectrum access opportunities to cognitive rafio (CR) users without causing interference to primary users. For the limitation of local spectrum detection, cooperative spectrum sensing is proposed. To maximize the spectrum sensing efficiency of single licensed channel under satisfying interference constraint to primary user, a novel cooperative spectrum sensing scheme is proposed by jointly optimizing the sensing parameters of sensing duration, the transmission duration and the numbers of CR users participating in cooperative spectrum sensing and the optimal solution is obtained based on exhaustive search. Moreover, the sensing efficiency problem is studied in multichannel environment and a licensed channel selective allocation scheme is proposed. Simulation results verify the effectiveness of the proposed method.关键词
认知无线电/协作频谱感知/感知效率/干扰限度Key words
cognitive radio (CR)/ cooperative spectrum sensing/ sensing efficiency/ interfer-ence constraint分类
信息技术与安全科学引用本文复制引用
胡晓宁,胡捍英,仵国锋..认知无线电协作频谱感知机制的优化[J].数据采集与处理,2011,26(6):691-696,6.基金项目
国家重大科技专项(2009ZX03003-007)资助项目. （2009ZX03003-007）
