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MIMO干扰信道中新的干扰消除方法

DOI: 10.13190/j.jbupt.2014.06.005, PP. 23-27

Keywords: 多输入多输出,干扰信道,空时分组码,多用户干扰,预编码

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Abstract:

对于3用户的多输入多输出干扰信道,提出了一种基于空时编码的干扰消除方法.每个用户采用速率为2的空时分组码,通过在每个用户的发送信号中引入零矩阵,消除第3个接收端的多用户干扰;通过对空时码字进行预编码和接收端的单向协作链路,消除其余2个接收端的多用户干扰.与相同场景中的已有方案相比,所提方案在保持相同传输效率的同时,减少了反馈量,还实现了全分集.仿真结果显示,收发天线的个数相同时,所提方案的可靠性优于相同场景中的已有方案.

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