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MIMO干扰信道中新的空时编码传输方案

DOI: 10.13190/j.jbupt.2015.04.023, PP. 117-121

Keywords: 多输入多输出干扰信道,空时编码,预编码,干扰对齐,传输效率

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Abstract:

针对3用户的多输入多输出(MIMO)干扰信道,提出了一种新的空时编码传输方案,设计了一种速率为2的空时码字,通过对该码字进行干扰对齐预编码使得后2个接收端接收到的非期望接收码字对齐,然后进行非线性运算消除这2个接收端的非期望接收码字,再通过单向协作链路以及接收端的非线性运算消除另一个接收端的非期望接收码字.与相同场景中的已有方案相比,所提方案在保持相同分集增益的同时,提高了传输效率.仿真结果显示,传输速率相同时,所提方案有较高的可靠性.

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