Per-layer transmit and Tomlinson-Harashima MIMO receive filters design for precoding in multiuser systems

In this paper, the per-layer design for Tomlinson-Harashima precoding （THP） in the downlink of multiuser multiple-input multiple-output （MIMO） systems is investigated. In these systems, the number of the receivers is equal to that of the transmit antennas. Based on the criterion of maximum system su...

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Bibliographic Details
Published in中国科学：信息科学（英文版） Vol. 55; no. 4; pp. 839 - 849
Main Author HUANG Min CHEN Xiang ZHOU ShiDong WANG Jing
Format Journal Article
LanguageEnglish
Published 2012
Subjects
MIMO
下行链路
发送
多用户系统
多输入多输出
接收滤波器
设计
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Summary:In this paper, the per-layer design for Tomlinson-Harashima precoding （THP） in the downlink of multiuser multiple-input multiple-output （MIMO） systems is investigated. In these systems, the number of the receivers is equal to that of the transmit antennas. Based on the criterion of maximum system sum-capacity, we study two per-layer joint transmit and receive filters design schemes with receive antenna beamforming （RAB） and receive antenna selection （RAS）, respectively. Moreover, the differences of the equivalent channel gains and capacities between these two schemes are analyzed theoretically. Simulation results show that by these per-layer schemes, the system sum-rate is improved significantly with respect to the per-user processing scheme.
Bibliography:Tomlinson-Harashima precoding, multiuser multiple-input multiple-output, per-layer, joint trans-mit and receive filters design
In this paper, the per-layer design for Tomlinson-Harashima precoding （THP） in the downlink of multiuser multiple-input multiple-output （MIMO） systems is investigated. In these systems, the number of the receivers is equal to that of the transmit antennas. Based on the criterion of maximum system sum-capacity, we study two per-layer joint transmit and receive filters design schemes with receive antenna beamforming （RAB） and receive antenna selection （RAS）, respectively. Moreover, the differences of the equivalent channel gains and capacities between these two schemes are analyzed theoretically. Simulation results show that by these per-layer schemes, the system sum-rate is improved significantly with respect to the per-user processing scheme.
11-5847/TP
ISSN:1674-733X
1869-1919