考虑信源有多根天线、中继和终端均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的发射策略.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.导出了瑞利衰落下系统中断概率和误码率的封闭表达式,并通过计算机仿真和数值结果的比较,验证了理论导出表达式的精确性.%A two-hop relaying system in which the source are equipped with multiple antennas, while the relay and destination only have a single antenna is considered. OSTBC strategy is employed at the source to achieve space diversity. To make the complexity of the relay lower, fixed gain amplify-to-forward protocol is used. The closed-form expression for outage probability and average SER are derived in Rayleigh fading environment. Finally, Monte Carlo simulations are .compared to numerical results to validate the theoretical expressions.
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