DocumentCode :
1393355
Title :
Outage Analysis of Cooperative CDMA Systems in Nakagami- 
Fading Channels
Author :
Mehemed, Ali ; Hamouda, Walaa
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, QC, Canada
Volume :
61
Issue :
2
fYear :
2012
Firstpage :
618
Lastpage :
623
Abstract :
The performance of uplink cooperative code-division multiple-access (CDMA) systems using adaptive decode-and-forward (DF) relaying is investigated over Nakagami-m fading channels. A closed-form expression for the outage probability for a multirelay system with relay selection is derived. Our method is based on the moment-generating function (MGF) for the total signal-to-noise ratio (SNR) at the base station where the cumulative density function (cdf) is obtained. We also examine the asymptotic performance of the system at high SNR from which we evaluate the achievable diversity gain for different system parameters. Both simulations and analytical results are presented for performance evaluation.
Keywords :
Nakagami channels; code division multiple access; cooperative communication; decode and forward communication; performance evaluation; probability; MGF; Nakagami-m fading channels; SNR; adaptive DF relaying; adaptive decode-and-forward relaying; base station; closed-form expression; cooperative CDMA systems; cumulative density function; moment-generating function; multirelay system; outage analysis; outage probability; performance evaluation; relay selection; signal-to-noise ratio; uplink cooperative code-division multiple-access systems; Analytical models; Base stations; Closed-form solutions; Fading; Multiaccess communication; Relays; Signal to noise ratio; Asynchronous code-division multiple access (CDMA); Nakagami-$m$
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2011.2178870
Filename :
6097075
Link To Document :
