多跳合作网络中再生协议的性能分析与比较  

Performance analysis and comparison of regenerative protocols for multihop cooperative networks

作　　者：程卫军[1] 朱柏承[1] 

机构地区：[1]北京大学电子学系

出　　处：《哈尔滨工业大学学报》2007年第3期492-496,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(60672105)

摘　　要：根据多跳合作网络结构的不同,研究了单节点中继时的5种合作发送协议.在瑞利衰落下分析和比较了这些协议再生中继时的系统容量和分集度,并讨论了中继节点动态移动的影响.理论和仿真分析表明合作系统在一定条件下可实现2阶全分集(合作节点的个数),这些条件包括网络结构、发送协议、中继节点位置和中继信息的处理方式等,但其再生中继的容量受制于第一跳链路的质量,并且需要2倍于单跳传输的时隙资源.Five single-relaying cooperative transmitted protocols for muhihop wireless networks based on the different network configurations are investigated. Their regenerative performances are analyzed and compared from capacity and diversity degree point-of-views over Rayleigh fading, and some impacts of cooperative systents are also considered due to mobility of the relaying node. Theoretic analysis and simulated results show cooperative systems can offer the two-order full diversity （ the number of cooperative nodes） at some certain manners including network configurations, transmitted protocols, location and processing methods of relaying nodes. However, the capacity of these regenerative systems is constrained by the first link quality, and they need double time-slot resources compared with the single-hop systems.

关 键 词：多跳合作系统 合作协议 再生中继 分集度 

分 类 号：TN919[电子电信—通信与信息系统]