中文摘要：

针对多输入多输出系统传输速率低误码率高的问题,提出基于动态功率分配的干扰对齐方法。该方法根据信道矩阵的迹给每个发送端动态的分配传输功率。同时,利用干扰对齐来减少其他发送端对接收用户的干扰。该方法通过联合优化功率分配和干扰对齐,最终提高了系统传输速率,降低了误码率。数值分析表明,该方法与等功率分配下的干扰对齐方法相比,系统的传输速率提高3～7 bps/Hz,同时误码率减少30%左右。

英文摘要：

To improve the transmission rate and reduce bit error rate in multiple input multiple output interference channel, this paper proposed an interference alignment method based on dynamic power allocation. In this method, the base station allocated power to every transmitter dynamically according to the trace of channel matrix. At the same time, it used interference alignment to reduce interference. This method combined optimal power allocation with interference alignment to improve the transmission rate and reduce bit error rate. Numerical results show that the proposed method increases the transmission rate about 3 -7 bps/Hz and reduces the bit error rate about 30%.