Title :
Outage optimality of opportunistic amplify-and-forward relaying
Author :
Bletsas, Aggelos ; Shin, Hyundong ; Win, Moe Z.
Author_Institution :
Massachusetts Inst. of Technol., Cambridge, MA
fDate :
3/1/2007 12:00:00 AM
Abstract :
In this paper, we show that optimal selection and transmission of a single relay among a set of multiple amplify-and-forward (AF) candidates minimize the outage probability (i.e., outage-optimal) and outperform any other strategy that involves simultaneous transmissions from more than one AF relay under an aggregate power constraint. This outage optimality demonstrates that cooperation benefits are maximized with intelligent scheduling among AF relays.
Keywords :
diversity reception; fading channels; probability; radio repeaters; AF single relay transmission; cooperative diversity; fading relay channel; intelligent scheduling; opportunistic amplify-and-forward relaying; outage probability; AWGN; Aggregates; Fading; Performance loss; Protocols; Relays; Wireless networks;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2007.061589
