固定增益的两跳OSTBC中断概率分析  

Outage Probability of Two-Hop Fixed-gain OSTBC Transmission

作　　者：李光平[1,2] 冯久超[2] 

机构地区：[1]广东工业大学信息工程学院,广东广州5100061 [2]华南理工大学电子与信息学院,广东广州510641

出　　处：《通信技术》2011年第8期18-20,共3页Communications Technology

基　　金：广东省自然科学基金(No.10451009001004407)

摘　　要：研究信源和终端需要配置多根天线,而中继只有单根天线的两跳中继转发系统。为了获得空间分集,信源利用了正交空时分组编码(OSTBC)的发射策略,终端利用了选择合并方式。为了尽可能简化中继配置的复杂度,中继采用固定增益放大转发的协议。在信源和终端直接通信链路存在的情形下,首先导出总的接收信噪比的表达式,接着导出瑞利衰落条件下系统中断概率的封闭表达式,最后通过蒙特卡洛仿真和数值结果的比较,验证了理论导出表达式的精确性。The source and terminal a two-hop relay system are equipped with multiple antennas,while the relay only has a single antenna.OSTBC strategy is employed at the source,thus to achieve space diversity,wihle selection-and-combination is used at the terminal.To reduce the complexity of relay,the fixed-gain amplify-to-forward relaying protocol is adopted.The expression of total received SNR is derived for the case that the direct communication link exists.Also,the closed-form expression for outage probability is derived in Rayleigh fading environment.Finally,Monte Carlo simulations and numerical results indicate that the theoretically-derived expressions are correct and accurate.

关 键 词：中继转发系统 正交空时分组编码(OSTBC) 固定增益放大转发 

分 类 号：TN929.5[电子电信—通信与信息系统]