协同SC-FDE系统中基于RS的D-STBC传输方案设计  

D-STBC Design for SC-FDE Cooperative Transmission System with Relay Selection

作　　者：胡雅洁[1] 程云鹏[1] 方永[2] 徐信[3] 

机构地区：[1]解放军理工大学通信工程学院 [2]中国人民解放军73683部队 [3]济南军区通信网络技术管理中心

出　　处：《军事通信技术》2015年第1期51-58,共8页Journal of Military Communications Technology

摘　　要：文章针对多中继的协同单载波频域均衡(SC-FDE)系统,设计了基于中继选择(RS)的分布式空时编码(D-STBC)传输方案,在频率选择性衰落信道下对系统进行了性能分析,推导了系统中断概率和误比特率的闭式表达式,并在高信噪比条件下进行了简化分析,得到了系统分集度,最后进行蒙特卡洛仿真验证了理论分析的正确性,理论分析和仿真结果表明:中断概率和误比特率随多径数L和中继数K的增加而下降,传输方案分集度G=L(K+1)。A Distributed Space-Time Block-Coding（D-STBC） scheme based on Relay Selec- tion（RS） was designed for Single Carrier Frequency Domain Equalization（SC-FDE） cooperative transmission system with multiple relays. Then performance analysis was made in the frequency- selective fading channel. By using statistical analysis of end-to-end Signal-to-Noise-Ratio（SNR）, closed-form outage probability and average Bit Error Rate（BER） were obtained. Further, asymp- totic analysis of the outage probability and average BER reveal that the diversity gain of the de- signed scheme is G=L（K＋1） , and L and K are the number of transmission path and relay node respectively. Monte Carlo simulation results verify the derived closed-form analytical expressions and the diversity gain in high SNR.

关 键 词：中继选择 协同传输 空时编码 单载波频域均衡 

分 类 号：TN929.5[电子电信—通信与信息系统]