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空间复用STBC系统接收机算法性能分析

DOI: 10.13190/jbupt.200703.83.wangjf, PP. 83-87

Keywords: 多入多出,空间复用,空时块码,迫零检测,分集增益

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Abstract:

介绍了空间复用-空时块码(SM-STBC)系统的基本原理和接收算法,对基于迫零(ZF)准则的检测算法的性能进行了理论分析,给出了采用ZF检测后的输出信噪比的概率密度分布函数,进而得到该接收算法下的分集增益大小和无信道编码下的误码率性能表达式,并通过计算机仿真印证了理论推导的正确性。从理论分析和仿真结果可以看出,通过在空间复用发射端引入STBC技术在损失了部分复用增益的情况下能够大大提高空间分集增益,获得更好的链路误码率性能。

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