Distributed downlink beamforming in cellular networks

被引：9
|
作者：
Ng, Boon Loong [1 ]
Evans, Jamie [1 ]
Hanly, Stephen [1 ]
机构：
[1] Univ Melbourne, Dept Elect & Elect Engn, ARC Special Res Ctr Ultrabroadband Informat Netwo, Melbourne, Vic 3010, Australia
来源：
2007 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS, VOLS 1-7 | 2007年
关键词：
D O I：
10.1109/ISIT.2007.4557195
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We consider a cellular network where base stations can cooperate to determine the signals to be transmitted on the downlink. Using a particular downlink beamformer structure, we recast our downlink beamforming problem as a virtual linear minimum mean square error (LMMSE) estimation problem. Based on this virtual set up, we remodel the network as a factor graph with loops and present a simple distributed cooperative scheme for base stations based on the sum-product algorithm. We study the condition for convergence for the distributed algorithm and demonstrate its performance via simulations.
引用
收藏
页码：6 / 10
页数：5
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