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针对3用户的多输入多输出干扰信道,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.
Aiming at the multi-input and multi-output interference channel of 3 users, a new scheme of space-time coding transmission is proposed. A space-time codeword with a rate of 2 is designed. By pre-coding interfering with the codeword, The receiver receives the undesired received codeword alignment and then performs a non-linear operation to eliminate the undesired received codewords of the two receiver terminals and then cancels the undesired reception of the other receiver terminal through the non-linear operation of the unidirectional cooperative link and the receiver terminal Compared with the existing schemes in the same scenario, the proposed scheme improves the transmission efficiency while maintaining the same diversity gain.The simulation results show that the proposed scheme has high reliability when the transmission rates are the same.