在UW B脉冲信号的角度分集接收中，通常的空时处理中通道时延不易精确地控制。
In usual spatial-time processing for diversity reception of UWB pulses, the channel delays are not easy to be implemented accurately.
研究了在时变瑞利衰落信道下，存在反馈时延的选择发送分集（STD）系统的性能。
The performance of selective transmit diversity(STD) with feedback delay is investigated under time-varying Rayleigh channel.
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