数据采集与处理2017，Vol.32Issue(5)：988-996,9.DOI:10.16337/j.1004-9037.2017.05.016
能量效率和碰撞概率联合优化的协作频谱感知算法
Cooperative Spectrum Sensing Algorithm Based on Joint Optimization of Energy Efficiency and Collision Probability
摘要
Abstract
Cooperative spectrum sensing can improve the sensing performance of cognitive radio(CR) network.At the cost of improving the sensing performance,the cognitive network costs more energy.Meanwhile,the secondary users have more opportunities to access the spectrum hole.However,with the development of the cognitive network throughput,the data collision probability between the primary user and cognitive user increases continuously.This paper proposes a cooperative spectrum sensing algorithm based on the energy efficiency and data collision probability.In this algorithm,we choose the optimal sensing check point to judge the nodes' channel state.At the same time,bad channel state of node is discarded in fusion center.Therefore,not only the effect of bad channel state of node on global decision is eliminated,but also the energy efficiency is improved.The simulation results show that the proposed algorithm can improve the spectrum sensing performance of CR metwork effectively and prolong its lifecycle.关键词
认知无线电/协作频谱感知/能量有效性/碰撞概率Key words
cognitive radio/cooperative spectrum sensing/energy efficiency/collision probability分类
信息技术与安全科学引用本文复制引用
倪丹艳,包志华,张士兵..能量效率和碰撞概率联合优化的协作频谱感知算法[J].数据采集与处理,2017,32(5):988-996,9.基金项目
国家自然科学基金(61371111,61371112)资助项目. （61371111,61371112）
