中文摘要：

针对多基站协作系统，分析了吞吐量性能受有限反馈的影响，推导了系统吞吐量损耗的上限值．在各小区反馈比特数相等和用户总反馈比特数固定情况下，提出了适应系统的有限反馈方案：当各小区反馈比特数相等时，反馈比特数随信噪比的增加，可使系统吞吐量损耗的上限值保持恒定；当用户总反馈比特数固定时，通过最优反馈分配方案使吞吐量损耗的上限值最小．

英文摘要：

The influence of limited feedback on the system throughput is analyzed and the upper bound of throughput loss is derived for the multi-base-station coordination system. The scheme of limited feedback is proposed for the system in two different conditions. The upper bound of system throughput loss is con- stant by increasing the feedback bits for an increasing signal-to-noise ratio when the number of feedback bits of each cell is equal. The upper bound of system throughput loss is minimized by the proposed opti- mal feedback allocation mechanism when the total number of feedback bits is fixed.