Title :
Achievable rate for amplify and forward relay system at low SNR
Author :
Bi, Yu ; Ding, Yanwu ; Kwon, Hyuck M.
Author_Institution :
Wichita State Univ., Wichita, KS, USA
fDate :
Jan. 30 2012-Feb. 2 2012
Abstract :
In this paper, the achievable rate and its approximations are studied for an Amplify-and-Forward (AF) relaying system at low signal-to-noise ratio (SNR). To characterize the effect of relay locations, an aggregate channel model with both long-term path loss and short-term fading is used. To consider the effect of channel information at the relay node, instantaneous and average amplification coefficients are applied respectively when evaluating the achievable rate. The optimal power loadings and amplification coefficients to reveal useful insight on the relay operating status for the achievable rate.
Keywords :
amplify and forward communication; fading channels; achievable rate; amplify-and-forward relaying system; average amplification coefficients; channel information; channel model aggregation; instantaneous amplification coefficients; long-term path loss; low signal-to-noise ratio; optimal power loadings; relay locations; relay node; relay operating status; short-term fading; Approximation methods; Covariance matrix; Fading; Loading; Relays; Signal to noise ratio; Relay system; achievable rate; amplify-and-forward; power loading; relay operating status;
Conference_Titel :
Computing, Networking and Communications (ICNC), 2012 International Conference on
Conference_Location :
Maui, HI
Print_ISBN :
978-1-4673-0008-7
Electronic_ISBN :
978-1-4673-0723-9
DOI :
10.1109/ICCNC.2012.6167558
