Performance analysis of multiuser MEMO systems with zero forcing receivers

被引：4
|
作者：
Sung, Chang Kyung [1 ]
Moon, Sung Hyun [1 ]
Choe, Jinwoo [2 ]
Lee, Inkyu [1 ]
机构：
[1] Korea Univ, Sch Elect Engn, Seoul 136701, South Korea
[2] Sogang Univ, Dept Elect Engn, Seoul, South Korea
来源：
2007 IEEE 65TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6 | 2007年
关键词：
D O I：
10.1109/VETECS.2007.441
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：
In this paper, we consider multiuser multi-input/multi-output antenna systems with zero-forcing receivers in downlink. In this case, to exploit multiuser diversity, spatial-division multiple access (SDMA) system allows to assign different users to a part of transmit antennas at the base station whereas spatial-division multiplexing (SDM) system assigns all antennas to single user's data stream. In this paper, we present analytical frameworks to evaluate performance of these systems. We first analyze the performance of these two systems by deriving closed-form expressions of achievable throughput. Numerical results show that the derived expressions are very tight. In addition, we approximate the capacity expression of SDM and SDMA systems and compare the SDM with the optimal case.
引用
收藏
页码：2135 / +
页数：2
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