Comparison of Quantization Techniques for Downlink Multi-User MIMO Channels with Limited Feedback

被引：7
|
作者：
Wang, Qi [1 ]
Feng, Hao [1 ]
Cimini, Leonard J. [1 ]
Greenstein, Larry J. [1 ,2 ]
Chan, Douglas S. [3 ]
Hedayat, Ahmadreza [3 ]
机构：
[1] Univ Delaware, Newark, DE USA
[2] Rutgers State Univ, ECE, WINLAB, North Brunswick, NJ USA
[3] Cisco Syst, San Jose, CA USA
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2014年 / 3卷 / 02期
关键词：
Multi-user; MIMO; limited feedback; overhead;
D O I：
10.1109/WCL.2013.122213.130692
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter evaluates three quantization techniques for downlink multiple-user multiple-input multiple-output (MU-MIMO) systems with limited feedback. The required feedback bits for a specified rate loss are quantified, as well as the complexity for each technique. Furthermore, the net capacity, which incorporates the effect of the overhead, is studied. The analysis and simulation results reveal the advantages and drawbacks of each quantization method and demonstrate under what conditions to use one of them rather than the other.
引用
收藏
页码：165 / 168
页数：4
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