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在多输入多输出(MIMO)通信系统中,MIMO检测是发送端MIMO编码的逆过程,是根据接收到的信号及接收信号质量、信道状态信息等获得发送端发送比特的概率信息过程。通信信道矩阵的QR分解(QRD)是几种MIMO信号检测方案的基本先决条件。首先针对QRD方案进行研究,详细介绍了QRM-MLD的算法实现并进行了优化。最后对复杂度进行了统计并对仿真结果进行了分析,证明此方案可以作为MIMO检测的优选方案。
In multiple input multiple output (MIMO) communication systems, MIMO detection is the inverse process of MIMO coding at the transmitting end, and is the process of obtaining the probability information of the transmitting side according to the received signal, received signal quality and channel state information. The QR decomposition (QRD) of the communication channel matrix is a basic prerequisite for several MIMO signal detection schemes. Firstly, the QRD scheme is studied, the QRM-MLD algorithm is introduced in detail and optimized. Finally, the complexity is calculated and the simulation results are analyzed. It is proved that this scheme can be used as the optimal scheme for MIMO detection.