基于冗余前置的机会编码协同中继策略  

Opportunistic Relaying-Coded Cooperation with Additional Parity Bits Transmitted First

作　　者：沈春明[1] 高媛媛[1] 郭明喜[1] 张亚龙[1] 杨保峰[1] 

机构地区：[1]解放军理工大学通信工程学院,210007

出　　处：《通信技术》2011年第10期30-32,35,共4页Communications Technology

摘　　要：对于多节点的协同网络,机会编码协同总是选择最佳中继参与协同,能够取得优越的中断概率性能。为了进一步提高中断概率性能,提出了基于冗余前置的机会编码协同中继策略,并对其在瑞利平坦慢衰落信道条件下的中断概率性能进行了计算机仿真。结果表明,所提策略的中断概率性能明显优于机会编码协同中继策略,若所要求的中断概率为10-3,当潜在协同中继数目为7,协同等级为0.5,目标信息速率为1 bit/s/Hz的条件下,所提策略较机会编码协同中继策略可以获得1.9 dB的信噪比增益。The best relay is chosen to participate in cooperative transmission in Opportunistic Relaying-Coded Cooperation（OR＋-CC） where the source node is also regarded as a candidate relay for multi-node cooperation network and OR＋-CC could achieve superior outage probability.To improve the performance of outage probability,OR＋-CC with additional parity bits transmitted first（APTF-OR＋-CC） is proposed.Simulation on flat and slow Rayleigh fading channels indicates that the proposed scheme outperforms OR＋-CC in outage behavior and could achieve 1.9dB SNR gain over OR＋-CC when the number of candidate relay is 7,cooperation level 0.5 and the target rate 1 bit/s/Hz.

关 键 词：编码协同 机会中继 冗余前置 

分 类 号：TN911.2[电子电信—通信与信息系统]