In this paper, the concept of multi-channel integrated SINR is proposed for Multi-User Multiple Input and Multiple Output (MU-MIMO) limited feedback system where all equivalent channels are used to transmit data. We prove that the achievable bit rate of user terminal depends on its multi-channel integrated SINR. We propose a user selection algorithm based on the multi-channel integrated SINR which can obtain larger system throughput compared with the existing literatures where only one equivalent channel is used to transmit data, and we prove that the proposed algorithm has a smaller computation load compared with algorithms which directly calculate user’s achievable bit rate to select users.

本文针对多用户多输入多输出（MU-MIMO）有限反馈系统提出了多通道集成SINR的概念，在该系统中，所有等效通道均用于传输数据。我们证明了用户终端可实现的比特率取决于其多通道集成SINR。我们提出了一种基于多通道集成SINR的用户选择算法，与仅使用一个等效通道进行数据传输的现有文献相比，该算法可以获得更大的系统吞吐量，并且证明了该算法与以下方法相比具有较小的计算量。直接计算用户可达到的比特率以选择用户的算法。