Paper Info
Title
Outage Probability of Dual-Hop Multiple Antenna AF Systems with Linear Processing in the Presence of Co-Channel Interference
Abstract
This paper considers a dual-hop amplify-and-forward (AF) relaying system where the relay is equipped with multiple antennas, while the source and the destination are equipped with a single antenna. Assuming that the relay is subjected to co-channel interference (CCI) and additive white Gaussian noise (AWGN) while the destination is corrupted by AWGN only, we propose three heuristic relay precoding schemes to combat the CCI, namely, 1) Maximum ratio combining/maximal ratio transmission (MRC/MRT), 2) Zero-forcing/MRT (ZF/MRT), 3) Minimum mean-square error/MRT (MMSE/MRT). We derive new exact outage expressions as well as simple high signal-to-noise ratio (SNR) outage approximations for all three schemes. Our findings suggest that both the MRC/MRT and the MMSE/MRT schemes achieve a full diversity of N, while the ZF/MRT scheme achieves a diversity order of N-M, where N is the number of relay antennas and M is the number of interferers. In addition, we show that the MMSE/MRT scheme always achieves the best outage performance, and the ZF/MRT scheme outperforms the MRC/MRT scheme in the low SNR regime, while becomes inferior to the MRC/MRT scheme in the high SNR regime. Finally, in the large N regime, we show that both the ZF/MRT and MMSE/MRT schemes are capable of completely eliminating the CCI, while perfect interference cancelation is not possible with the MRC/MRT scheme.
Year
DOI
Venue
2014
10.1109/TWC.2014.030514.131497
IEEE Transactions on Wireless Communications
Keywords
DocType
Volume
relay networks (telecommunication),maximum ratio combining,exact outage expressions,co-channel interference,diversity reception,perfect interference cancelation,approximation theory,precoding,dual-hop relaying,awgn,mrt,linear processing,dual-hop amplify-and-forward relaying system,dual-hop multiple antenna af systems,cochannel interference,heuristic relay precoding schemes,outage probability,minimum mean-square error,mmse/mrt schemes,additive white gaussian noise,zero-forcing,maximal ratio transmission,amplify-and-forward,mrc,performance analysis,amplify and forward communication,linear precoding,mean square error methods,probability,zero forcing,interference,minimum mean square error,antennas,signal to noise ratio,co channel interference,vectors
Journal
13
Issue
ISSN
Citations 
4
1536-1276
25
PageRank 
References 
Authors
0.84
25
5
Name
Order
Citations
PageRank
Guangxu Zhu134324.03
Caijun Zhong22007120.77
Himal A. Suraweera32639117.31
Z. Zhang42308198.54
Chau Yuen54493263.28