DocumentCode
2900104
Title
A Decentralized Power Allocation Scheme for Amplify-And-Forward Multi-Hop Relaying Systems
Author
Farhadi, Golnaz ; Beaulieu, Norman C.
Author_Institution
Dept. of Electr. Eng., Stanford Univ., Stanford, CA, USA
fYear
2010
fDate
23-27 May 2010
Firstpage
1
Lastpage
6
Abstract
A decentralized power allocation scheme for amplify-and-forward (AF) multi-hop relaying systems is proposed. The scheme maximizes a harmonic mean-based approximate expression for the instantaneous received signal-to-noise ratio (SNR). The outage probability in Rayleigh fading of the proposed power-optimized system is evaluated. Numerical results show the superior performance of AF multi-hop relaying systems employing the proposed power allocation scheme over those with uniform power allocation. The asymptotic outage behavior for sufficiently large values of SNR is also studied and it is demonstrated that AF multi-hop relaying systems employing the proposed power allocation scheme achieve diversity order 2.
Keywords
Batteries; Communications Society; Cooperative systems; Fading; Power system relaying; Power system reliability; Rayleigh channels; Relays; Signal to noise ratio; Wireless sensor networks;
fLanguage
English
Publisher
ieee
Conference_Titel
Communications (ICC), 2010 IEEE International Conference on
Conference_Location
Cape Town, South Africa
ISSN
1550-3607
Print_ISBN
978-1-4244-6402-9
Type
conf
DOI
10.1109/ICC.2010.5501940
Filename
5501940
Link To Document