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针对下行多用户多入多出系统,提出了一种基于区别归一化匹配信道矩阵的有限反馈方案.该方案通过对匹配信道矩阵元素有区别归一化,避免了基于F范数归一化方案中矩阵元素的取值范围随发端天线数的增加而逐渐收敛于0,保证了均匀量化在不同发端天线数情况下的量化精度.仿真结果表明,相比于传统基于F范数的归一化方案,该方案能有效降低量化均方误差,提高预编码的可靠性.
Aiming at the downlink multi-user MIMO system, a finite feedback scheme based on discriminatively normalized matching channel matrix is proposed. By normalizing the matching channel matrix elements, the scheme avoids normalization based on F-norm The range of the matrix elements in the scheme gradually converges to 0 with the increase of the number of transmitting antennas, which guarantees the quantization accuracy of uniform quantization at different transmitting antennas. Simulation results show that compared with the traditional normalization based on F-norm The scheme can effectively reduce the mean square error of quantization and improve the reliability of precoding.