基站协作系统中基于误差修正的有限量化反馈设计  

Limited Quantization Feedback Design Based on Error Correction in Base Station Coordination System

作　　者：韩东升[1,2] 杨维[1,3] 许昌龙[3] 

机构地区：[1]北京交通大学轨道交通控制与安全国家重点实验室,北京100044 [2]华北电力大学电气与电子工程学院,河北保定071003 [3]东南大学移动通信国家重点实验室,南京210096

出　　处：《应用科学学报》2011年第1期9-14,共6页Journal of Applied Sciences

基　　金：国家科技重大专项基金(No.2009ZX03003-005);教育部长江学者和创新团队发展计划基金(No.IRT0949);轨道交通控制与安全国家重点实验室自主研究课题基金(No.RCS2009ZT014);东南大学移动通信国家重点实验室开放研究基金(No.2010D11)资助

摘　　要：针对基站协作系统的特点,提出一种基于误差修正的有限量化反馈方案.该方案将信道向量量化过程分为与协作基站数相等的若干步骤,每一步量化均对前一步的量化误差进行修正.复杂度分析和系统仿真比较表明,与现有的整体反馈方案相比,该方案以稍许牺牲系统性能为代价极大地降低了量化复杂度.与现有的分别反馈方案相比,该方案在增加少量复杂度的情况下,提高了系统性能.该方案在复杂度和系统性能方面获得了很好的折中.This paper proposes a limited quantization feedback mechanism based on error revising according to the characteristics of base-station coordination system. In this mechanism, the channel quantization process is divided into many steps. The number of the steps equals the number of coordinating base stations. Each quantization step corrects the errors in the previous step. From the complexity analysis and system simulations, it is concluded that the new mechanism reduces quantization complexity with very small degradation in the performance as compared to the existing global feedback mechanisms. It improves the system performance with very little increase in complexity as compared to the existing individual feedback mechanisms. The proposed mechanism provides a good tradeoff between complexity and system performance.

关 键 词：基站协作 有限量化反馈 预编码 多用户干扰 

分 类 号：TN929.5[电子电信—通信与信息系统]