DocumentCode :
1430066
Title :
Outage Analysis of Multihop Relay Systems in Interference-Limited Nakagami- m Fading Channels
Author :
Soithong, Termpong ; Aalo, Valentine A. ; Efthymoglou, George P. ; Chayawan, Chirasil
Author_Institution :
Electron. & Telecommun. Eng., King Mongkut´´s Univ. of Technol. Thonburi, Bangkok, Thailand
Volume :
61
Issue :
3
fYear :
2012
fDate :
3/1/2012 12:00:00 AM
Firstpage :
1451
Lastpage :
1457
Abstract :
In this paper, we study the outage probability of multihop transmission systems with amplify-and-forward (AF) and decode-and-forward (DF) relaying protocols operating over a Nakagami-m fading environment in the presence of cochannel interference. We consider the case of interference-limited relays with ideal AF relay gains based on the inverse of the fading amplitude of the desired signal in the previous link. For an arbitrary but fixed number of Nakagami-distributed interferers per hop, we derive a closed-form expression for the outage probability of an N-hop AF relaying system in terms of the multivariate Lauricella function FB(N) that can be evaluated with commonly available computer software. Moreover, the outage performance of an N-hop DF relaying system is also derived in closed form, and the two performances are compared. Simulation results are also provided to demonstrate the accuracy of the analytical expressions.
Keywords :
Nakagami channels; amplify and forward communication; cochannel interference; decode and forward communication; interference suppression; probability; protocols; relays; AF relaying protocol; DF relaying protocol; N-hop AF relaying system; N-hop DF relaying system; Nakagami-distributed interference; Nakagami-m fading channel; amplify-and-forward relaying protocol; closed-form expression; cochannel interference; computer software; decode-and-forward relaying protocol; fading amplitude inverse; interference-limited relay; multihop relay systems; multihop transmission system; multivariate Lauricella function FB(N); outage probability analysis; Analytical models; Interchannel interference; Rayleigh channels; Relays; Simulation; Amplify and forward (AF); cochannel interference; decode and forward (DF); end-to-end signal-to-interference ratio (SIR); multihop relaying; outage probability;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2012.2185525
Filename :
6138333
Link To Document :
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