协同通信中的缓存辅助中继选择方案综述  

Survey on Buffer-Aided Relay Selection Schemes in Cooperative Communications

作　　者：唐玄玄 杨文东[2] 蔡跃明 刘鑫[3] 曲新伟 

机构地区：[1]解放军理工大学通信工程学院研究生4队 [2]解放军理工大学通信工程学院 [3]中国人民解放军75660部队 [4]中国人民解放军91033部队

出　　处：《军事通信技术》2017年第1期35-40,共6页Journal of Military Communications Technology

基　　金：国家自然科学基金资助项目(61371122;61471393;61501512)

摘　　要：文章讨论了三种典型的缓存辅助中继选择方案,即缓存辅助最大-最大中继选择方案,缓存辅助全双工最大-最大中继选择方案,以及缓存辅助最大链路中继选择方案。其次,对三种方案的中断性能分别进行了探讨,并与传统的机会中继选择方案进行了对比。结果表明,缓存辅助式中继选择方案确实能够提升系统性能。另外,相比于机会中继选择方案,缓存辅助全双工最大-最大中继选择方案和缓存辅助最大-最大中继选择方案只能提升编码增益,而不能提升分集增益。然而,缓存辅助最大链路中继选择方案既能提升编码增益,也能提升分集增益。仿真结果验证了分析的正确性。Study was conducted on three typical buffer-aided relay selection scheme in cooper- ative communications, i. e. , the buffer-aided max-max relay selection, the buffer-aided space full duplex max-max relay selection, and the buffer-aided max link relay selection. Then, the outage performance of each scheme was investigated and compared with the conventional opportunistic relay selection. The results demonstrate that the buffer-aided relay selection scheme can improve the system performance significantly. Besides, the buffer-aided max-max relay selection and the buffer-aided space full duplex max-max relay selection can only obtain a coding gain enhancement when compared with the conventional opportunistic relay selection. On the contrary, the buffer- aided max link relay selection can not only acquire a coding gain improvement, but also get the diversity order improvement. The simulation results prove the correctness of the analysis.

关 键 词：协同通信 缓存辅助 中继选择 编码增益 分集增益 

分 类 号：TN929.5[电子电信—通信与信息系统]