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

fYear

2012

fDate

Jan. 30 2012-Feb. 2 2012

Firstpage

912

Lastpage

916

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCNC.2012.6167558

Filename

6167558