Title :
A Source-Relay Selection Scheme in Two-Way Amplify-and-Forward Relaying Networks
Author :
Li, Enyu ; Yang, Shizhong ; Wu, Haowei
Author_Institution :
Center of Commun. & Tracking Telemetry Command, Chongqing Univ., Chongqing, China
fDate :
10/1/2012 12:00:00 AM
Abstract :
In this paper, we investigate the two-way relaying (TWR) system in multi-source multi-relay scenarios and use the proposed tight upper bounds of instantaneous end-to-end signal-to-noise ratio (SNR) of the considered system to deduce a source-relay pair selection scheme, which can be performed in a distributed manner without requiring global channel state information (CSI). Specifically, we derive the closed-form lower bound of outage probability over independent but not identically distributed Nakagami-m fading channels. In addition, based on the asymptotic analysis in the high SNR regime, the diversity-multiplexing tradeoff (DMT) of the considered system is obtained. The effectiveness of our proposed source-relay pair selection scheme and analytical results is verified by simulations.
Keywords :
Nakagami channels; amplify and forward communication; diversity reception; multiplexing; probability; SNR; asymptotic analysis; closed-form lower bound; distributed Nakagami-m fading channel; diversity-multiplexing tradeoff; instantaneous end-to-end signal-to-noise ratio; multisource multirelay scenario; outage probability; source-relay pair selection scheme; source-relay selection scheme; two-way amplify-and-forward relaying network; two-way relaying system; Analytical models; Fading; Mobile communication; Performance analysis; Relays; Signal to noise ratio; Upper bound; Cooperative diversity; Nakagami-m fading; amplify-and-forward (AF); diversity-multiplexing tradeoff (DMT); multi-source multi-relay; outage probability; two-way relaying network;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2012.081612.121389
