华中科技大学学报：自然科学版2011，Vol.39Issue(8)：84-87,113,5.
认知无线电系统中感知时间的优化
Optimization of sensing time in cognitive radio systems
摘要
Abstract
Taking energy detection as the basic method of spectrum sensing and the average channel efficiency as the reference criterion for evaluating a cognitive radio system′s performance,the effect of sensing durations in different spectrum sensing stages on the sensing performance was analyzed in the context of multiple primary channels.The sensing durations that maximize the secondary user′s average channel efficiency were derived while providing the primary users with their desired level of interference protection.The theoretic analysis was verified by the simulation results.Results show that the secondary user can select the optimum sensing duration to optimize its average channel efficiency.关键词
无线电系统/认知系统/频谱机会/频谱感知/最优化Key words
radio systems/cognitive systems/spectrum opportunity/spectrum sensing/optimization分类
信息技术与安全科学引用本文复制引用
丁汉清,杨家玮,赵志远..认知无线电系统中感知时间的优化[J].华中科技大学学报：自然科学版,2011,39(8):84-87,113,5.基金项目
国家重点基础研究发展计划资助项目 （）
国家自然科学基金资助项目 （）
中央高校基本科研业务费专项资金资助项目 （）
