Joint Tomlinson-Harashima Source and Linear Relay Precoder Design in Amplify-and-Forward Multiple-Input Multiple-Output Two-Way Relay Systems

Existing minimum-mean-squared-error （MMSE） transceiver designs in amplified-and-forward （AF） multiple-input multiple-output （MIMO） two-way relay systems all assume a linear precoder at the sources. Nonlinear source precoders in such a system have not been considered yet. In this paper, we study the...

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Published inShanghai jiao tong da xue xue bao Vol. 18; no. 2; pp. 180 - 185
Main Author 钱成 张萌 罗汉文 刘伟
Format Journal Article
LanguageEnglish
Published Heidelberg Shanghai Jiaotong University Press 01.04.2013
Subjects
Algorithms
Amplification
Architecture
Computer Science
Design engineering
Electrical Engineering
Engineering
Iterative algorithms
Life Sciences
Materials Science
Mathematical models
Optimization
Receivers
Relay systems
Tomlinson-Harashima precoding
minimummean-square-error (MMSE)
multiple-input multiple-output (MIMO)
two-way relay
TN 929.5
Online AccessGet full text
ISSN1007-1172
1995-8188
DOI10.1007/s12204-013-1381-6

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Summary:Existing minimum-mean-squared-error （MMSE） transceiver designs in amplified-and-forward （AF） multiple-input multiple-output （MIMO） two-way relay systems all assume a linear precoder at the sources. Nonlinear source precoders in such a system have not been considered yet. In this paper, we study the joint design of source Tomlinson-Harashima precoders （THPs）, relay linear precoder and MMSE receivers in two-way relay systems. This joint design problem is a highly nonconvex optimization problem. By dividing the original problem into three sub-problems, we propose an iterative algorithm to optimize precoders and receivers. The convergence of the algorithm is ensured since the updated solution is optimal to each sub-problem. Numerical simulation results show that the proposed iterative algorithm outperforms other algorithms in the high signal-to-noise ratio （SNR） region.
Bibliography:Existing minimum-mean-squared-error （MMSE） transceiver designs in amplified-and-forward （AF） multiple-input multiple-output （MIMO） two-way relay systems all assume a linear precoder at the sources. Nonlinear source precoders in such a system have not been considered yet. In this paper, we study the joint design of source Tomlinson-Harashima precoders （THPs）, relay linear precoder and MMSE receivers in two-way relay systems. This joint design problem is a highly nonconvex optimization problem. By dividing the original problem into three sub-problems, we propose an iterative algorithm to optimize precoders and receivers. The convergence of the algorithm is ensured since the updated solution is optimal to each sub-problem. Numerical simulation results show that the proposed iterative algorithm outperforms other algorithms in the high signal-to-noise ratio （SNR） region.
31-1943/U
QIAN Cheng, ZHANG Meng , LUO Hart-wen , LIU Wei （Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China）
multiple-input multiple-output （MIMO）, two-way relay, Tomlinson-Harashima precoding, minimum- mean-square-error （MMSE）
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ISSN:1007-1172
1995-8188
DOI:10.1007/s12204-013-1381-6