Tomlinson-Harashima Precoding for the Downlink of Multiuser MIMO Systems

Xiao-lin CHE; Chen HE; Wen-feng LIN

doi:10.1093/ietcom/e91-b.2.622

Regular Section

Tomlinson-Harashima Precoding for the Downlink of Multiuser MIMO Systems

Xiao-lin CHE, Chen HE, Wen-feng LIN

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Keywords: multiuser MIMO, Tomlinson-Harashima precoding, downlink

JOURNAL RESTRICTED ACCESS

2008 Volume E91.B Issue 2 Pages 622-627

DOI https://doi.org/10.1093/ietcom/e91-b.2.622

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Abstract

In this letter, a Tomlinson-Harashima precoding (THP) scheme is proposed for the downlink of multiuser MIMO systems with multiple antennas at each receiver. Assuming single data stream communication for each user, joint transmitter and receiver design is done to maximize the signal to noise ratio (SNR) for each user. Furthermore, a heuristic user ordering algorithm is proposed to optimize the encoding order and improve the bit error rate (BER) performance. Simulation results have shown that the proposed approach is superior to some existing precoding schemes.

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