Title :
Power allocation for bidirectional AF relaying over rayleigh fading channels
Author :
Zhang, Yuanyuan ; Ma, Yi ; Tafazolli, Rahim
Author_Institution :
C.C.S.R., Univ. of Surrey, Guildford, UK
fDate :
2/1/2010 12:00:00 AM
Abstract :
This letter presents two novel power allocation schemes for bidirectional amplify-and-forward (AF) relaying over Rayleigh fading channels through the exploitation of channel mean strength. The first scheme aims to maximize the upper bound of average sum rate, and the other aims to achieve the trade-off of outage probability between two terminals. Numerical results show considerable performance improvement in comparison with conventional power allocation approaches.
Keywords :
Rayleigh channels; probability; Rayleigh fading channels; average sum rate; bidirectional AF relaying; bidirectional amplify-and-forward relaying; channel mean strength; outage probability; power allocation approach; upper bound; AWGN; Additive white noise; Bidirectional control; Decoding; Digital relays; Fading; Power system modeling; Power system relaying; Protocols; Upper bound; Amilify-and-forward, average sum-rate, bidirectional relaying, power allocation, outage probability;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2010.02.092227
