基于最大信号干扰噪声比的无线再生中继系统合并方案  

Maximum Signal-to-Interference-and-Noise-Ratio Combiner for Wireless Regenerative Relaying Systems

作　　者：熊骇韬[1] 徐景[1,2] 王萍[1,2] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]上海无线通信研究中心,上海200050

出　　处：《上海交通大学学报》2009年第3期402-407,共6页Journal of Shanghai Jiaotong University

基　　金：国家高技术研究发展计划(863)项目(2005AA123510,2007AA01Z278)

摘　　要：为了提高无线再生中继系统的传输性能,提出了一种最大信号干扰噪声比(信干噪比)合并方案.通过引入归一化相关系数,推导出了源节点-中继节点-目的节点两跳传输链路的端到端等效高斯链路表达式,以及最大信干噪比合并权向量.由于考虑了中继节点的判决可靠性,最大信干噪比合并方案能提供更准确的软信息,获得更好的误码率性能.数学分析表明,该方案适用于各种调制方式.仿真结果验证了其相对于现有合并方案的性能优越性.A maximum signal-to-interference-and-noise-ratio （SINR） combiner was proposed for decode and-forward relaying systems to improve their performances. By introducing the normalized correlation coefficient, an equivalent end-to-end Gaussian link for the source-relay-destination link is computed, and then the maximum SINR combiner is deduced at the destination. The proposed maximum SINR combiner provides more reliable soft information and thus improves the bit error rate performance. Analysis proves that the proposed combiner can be applied to any modulation schemes. Simulation results further demonstrate its advantage over other existing diversity combiners.

关 键 词：合作传输 解码转发 再生中继 合作分集 信干噪比 

分 类 号：TN925.2[电子电信—通信与信息系统]