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Receive Antenna Selection for Multiuser MIMO Systems with Tomlinson-Harashima Precoding
Min HUANG Xiang CHEN Yunzhou LI Shidong ZHOU Jing WANG
IEICE TRANSACTIONS on Communications
Publication Date: 2007/07/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Tomlinson-Harashima precoding (THP), multiuser, multiple-input multiple-output (MIMO), receive antenna selection,
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In this letter, we discuss the problem of receive antenna selection in the downlink of multiuser multiple-input multiple-output (MIMO) systems with Tomlinson-Harashima precoding (THP), where the number of receivers is assumed equal to that of transmit antennas. Based on the criterion of maximum system sum-capacity, a per-layer receive antenna selection scheme is proposed. This scheme, which selects one receive antenna for each receiver, can well exploit the nonlinear and successive characteristics of THP. Two models are established for the proposed per-layer scheme and the conventional per-user scheme. Both the theoretical analysis and simulation results indicate that the proposed scheme can greatly improve the equivalent channel power gains and the system sum-capacity.