计算机工程Issue(5)：139-143,5.DOI:10.3969/j.issn.1000-3428.2015.05.025
窃听环境下协作通信网络的机会中继选择方法
Opportunistic Relay Selection Method of Cooperative Communication Network Under Eavesdropping Environment
摘要
Abstract
In cooperative communication network,a relay selection procedure is usually based on the channel conditions of legitimate channels in traditional relay selection methods,thus it is hard to guarantee the security and privacy of the transmission in the presence of eavesdroppers. To tackle this problem,an opportunistic relay selection method considering the Channel State Information ( CSI ) of both the legitimate users and the eavesdropper is proposed to minimize the Secrecy Outage Probability ( SOP ) in a cooperative Decode-and-Forward ( DF ) network. Firstly, the optimal power allocation method is given when the total transmit power of the source and relay is constrained. Based on that,the best relay selection algorithm is proposed and the closed form expression of secrecy outage probability is derived. Simulation results verify the correctness of the closed form expression of secrecy outage probability, and show that the proposed algorithm greatly reduces the secrecy outage probability of the system compared with the traditional methods.关键词
协作通信/中继选择/功率分配/物理层安全/安全中断概率/解码转发Key words
cooperative communication/relay selection/power allocation/physical layer security/Secrecy Outage Probability(SOP)/Decode-and-Forward(DF)分类
信息技术与安全科学引用本文复制引用
李国兵,惠鏸..窃听环境下协作通信网络的机会中继选择方法[J].计算机工程,2015,(5):139-143,5.基金项目
国家自然科学基金资助项目(61102079,61102061) （61102079,61102061）
中央高校基本科研业务费专项基金资助项目。 （）
