Paper Info
Title
Low-complexity End-to-End Performance Optimization in MIMO Full-Duplex Relay Systems.
Abstract
In this paper, we deal with the deployment of full-duplex relaying in amplify-and-forward (AF) cooperative networks with multiple-antenna terminals. In contrast to previous studies, which focus on the spatial mitigation of the loopback interference (LI) at the relay node, a joint precoding/decoding design that maximizes the end-to-end (e2e) performance is investigated. The proposed precoding incorporates rank-1 zero-forcing (ZF) LI suppression at the relay node and is derived in closed-form by solving appropriate optimization problems. In order to further reduce system complexity, the antenna selection (AS) problem for full-duplex AF cooperative systems is discussed. We investigate different AS schemes to select a single transmit antenna at both the source and the relay, as well as a single receive antenna at both the relay and the destination. To facilitate comparison, exact outage probability expressions and asymptotic approximations of the proposed AS schemes are provided. In order to overcome zero-diversity effects associated with the AS operation, a simple power allocation scheme at the relay node is also investigated and its optimal value is analytically derived. Numerical and simulation results show that the joint ZF-based precoding significantly improves e2e performance, while AS schemes are efficient solutions for scenarios with strict computational constraints.
Year
DOI
Venue
2014
10.1109/TWC.2013.122313.130608
Wireless Communications, IEEE Transactions  
Keywords
DocType
Volume
MIMO communication,amplify and forward communication,cooperative communication,decoding,optimisation,precoding,receiving antennas,transmitting antennas,MIMO full-duplex relay systems,amplify-and-forward cooperative networks,antenna selection,end-to-end performance optimization,exact outage probability,full-duplex relaying,loopback interference,multiple-antenna terminals,optimization problems,precoding-decoding,receive antenna,simple power allocation,spatial mitigation,transmit antenna,zero-diversity effects,zero-forcing,MIMO relay networks,antenna selection,full-duplex relaying,outage probability,precoding
Journal
13
Issue
ISSN
Citations 
2
1536-1276
19
PageRank 
References 
Authors
0.77
0
5
Name
Order
Citations
PageRank
Himal A. Suraweera12639117.31
Ioannis Krikidis23348180.98
Gan Zheng32199115.78
Chau Yuen44493263.28
Peter J. Smith51544134.34