Paper Info
Title
Linear Precoding Designs for Amplify-and-Forward Multiuser Two-Way Relay Systems
Abstract
Two-way relaying can improve spectral efficiency in two-user cooperative communications. It also has great potential in multiuser systems. A major problem of designing a multiuser two-way relay system (MU-TWRS) is transceiver or precoding design to suppress co-channel interference. This paper aims to study linear precoding designs for a cellular MU-TWRS where a multi-antenna base station (BS) conducts bi-directional communications with multiple mobile stations (MSs) via a multi-antenna relay station (RS) with amplify-and-forward relay strategy. The design goal is to optimize uplink performance, including total mean-square error (Total-MSE) and sum rate, while maintaining individual signal-to-interference-plus-noise ratio (SINR) requirement for downlink signals. We show that the BS precoding design with the RS precoder fixed can be converted to a standard second order cone programming (SOCP) and the optimal solution is obtained efficiently. The RS precoding design with the BS precoder fixed, on the other hand, is non-convex and we present an iterative algorithm to find a local optimal solution. Then, the joint BS-RS precoding is obtained by solving the BS precoding and the RS precoding alternately. Comprehensive simulation is conducted to demonstrate the effectiveness of the proposed precoding designs.
Year
DOI
Venue
2012
10.1109/TWC.2012.100112.120082
IEEE Transactions on Wireless Communications
Keywords
DocType
Volume
amplify-and-forward relay strategy,bidirectional communication,relay networks (telecommunication),cellular mu-twrs,non-regenerative relay,cochannel interference suppression,multiantenna base station,linear codes,cellular radio,mimo precoding,precoding,bs precoding design,cooperative communication,sinr,minimum mean-square-error (mmse),socp,cochannel interference,sum rate,total mean-square error,signal-to-interference-plus-noise ratio,multiple mobile station,amplify-and-forward multiuser system,iterative algorithm,multiantenna relay station,two-user cooperative communication,transceiver,rs precoder,multiuser two-way relay system,interference suppression,total-mse,second order cone programming,two-way relaying,convex optimization,amplify and forward communication,spectral efficiency,linear precoding design,mean square error methods,protocols,downlink,mean square error,interference,signal to noise ratio,signal to interference plus noise ratio,optimization,mobile station,vectors,base station,iterative methods
Journal
11
Issue
ISSN
Citations 
12
1536-1276
37
PageRank 
References 
Authors
1.10
25
3
Name
Order
Citations
PageRank
Rui Wang149230.72
Meixia Tao22766168.20
Yongwei Huang381450.83