Nakagami-m信道下全双工解码转发中继中断概率分析  

On the Outage Performance of Full-Duplex Decode-and-Forward Relaying over Nakagami-m Fading Channels

作　　者：王雨榕 徐友云[1] 王文力 许魁[1] 

机构地区：[1]解放军理工大学通信工程学院 [2]解放军93498部队

出　　处：《信号处理》2016年第3期304-312,共9页Journal of Signal Processing

基　　金：国家自然科学基金重大研究计划(61371123);国家自然科学基金项目(61371123;61301165);江苏省自然科学基金项目(BK2011002;BK2012055);中国博士后科学基金特别资助项目(2015T81079);中国博士后科学基金项目(2014M552612);江苏省博士后科学基金项目(1401178C)资助

摘　　要：研究存在残余自干扰(residual self-interference,RSI)条件下全双工解码转发中继的中断概率性能。在Nakagami-m信道下,推导了两跳解码转发(dual-hop decode-and-forward,DH-DF)策略和选择解码转发(selected decode-and-forward,SDF)策略的端到端中断概率确切表达式和渐近表达式,分析了两种策略的可达分集度。结果显示,DH-DF策略的可达分集度为0,SDF策略的可达分集度由信道成型因子和中继功率伸缩方案决定。相比于DH-DF策略,SDF策略具有更优的中断概率性能和抗自干扰能力。In this paper,we analyze the outage probability of decode-and-forward based full-duplex relaying with non-negligible residual self-interference（ RSI）. The exact and asymptotic expressions of end-to-end outage probabilities for dual-hop decode-and-forward（ DH-DF） protocol and selected decode-and-forward（ SDF） protocol are derived in closed-form over Nakagami-m fading channels. Our results show that the achievable diversity of DH-DF protocol is zero,while the achievable diversity of SDF protocol depends on the shape factors of fading channels and the power scaling scheme of the relay.Moreover,we show that the SDF protocol achieves better outage performance and is robust to the residual self-interference when compared with DH-DF protocol.

关 键 词：全双工中继 解码转发 Nakagami-m 中断概率 分集度 

分 类 号：TN929.5[电子电信—通信与信息系统]