中南大学学报（自然科学版）2012，Vol.43Issue(6)：2179-2184,6.
增量选择解码前传中继系统的二阶统计特性
The second order statistics of incremental selection decode-and-forward relay system
摘要
Abstract
Aiming at the problems of the fixed decode-and-forward relay system, incremental selective decode-and-forward (ISDF) relay system was proposed, which was composed of incremental relaying (IR) and selection relaying (SR). The outage and the second order statistics (the average level crossing rate and the average output duration) of the ISDF relay system were analyzed. Closed-form expressions for the outage probability, the average level crossing rate and the average output duration were given. The results show that the ISDF relay system significantly improves outage performance in comparison with the SR protocol. The outage performance is optimal when the switching threshold is the same as outage threshold. The average level crossing rate and the average output duration are highly dependent on the switching threshold and outage threshold. The performance of the ISDF system depends on the worst of the source-relay channel and the relay-destination channel.关键词
协作分集/增量中继/选择解码前传/平均电平通过率/平均中断时间Key words
cooperative diversity/incremental relaying/selection decode-and-forward/average level crossing rate/average output duration分类
信息技术与安全科学引用本文复制引用
刁新颖,张曙..增量选择解码前传中继系统的二阶统计特性[J].中南大学学报（自然科学版）,2012,43(6):2179-2184,6.基金项目
国防科学技术工业委员会基础研究基金资助项目(40106030503) （40106030503）
国家自然科学基金资助项目(60875020) （60875020）
