Non-unitary codebook based precoding scheme for multi-user MIMO with limited feedback

被引：11
|
作者：
Fang Shu [1 ]
Li Lihua [1 ]
Cui Qimei [1 ]
Zhang Ping [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Key Lab Univ Wireless Commun, Minist Educ, Beijing 100876, Peoples R China
来源：
WCNC 2008: IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-7 | 2008年
关键词：
multi-user MIMO; Grassmannian line packing; non-unitary precoding; SINR; limited feedback;
D O I：
10.1109/WCNC.2008.125
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we propose a non-unitary codebook based precoding scheme for multi-user MIMO (MU-MIMO) downlink transmission with limited feedback. The proposed MU-MIMO scheme will perform scheduling and precoding just according to the limited feedback of the signal to interference and noise ratio (SINR) of each user to enhance the system capacity. A precoder codebook design method is related to Grassmannian line packing criterion. We group vectors from the Grassmannian codebook into precoding matrices according to the correlation coefficient of the vectors to suppress the multi-user co-channel interference (CCI). It terms as non-unitary precoding and outperforms the traditional single user MIMO system as well as the unitary codebook based MU-MINIO scheme with limited feedback and low complexity.
引用
收藏
页码：678 / 682
页数：5
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