Signal-to-Noise Ratio Comparison of Amplify-Forward and Direct Link in Wireless Sensor Networks

Ramanarayanan Viswanathan

Second International IEEE Workshop on Software for Sensor Networks

Research Article

Signal-to-Noise Ratio Comparison of Amplify-Forward and Direct Link in Wireless Sensor Networks

Cite: BibTeX Plain Text

@INPROCEEDINGS{10.1109/COMSWA.2007.382467,
    author={Ramanarayanan Viswanathan},
    title={Signal-to-Noise Ratio Comparison of Amplify-Forward and Direct Link in Wireless Sensor Networks},
    proceedings={Second International IEEE Workshop on Software for Sensor Networks},
    publisher={IEEE},
    proceedings_a={SENSORWARE},
    year={2007},
    month={7},
    keywords={Rayleigh fading  Rician fading  amplify-forward  cooperative relaying},
    doi={10.1109/COMSWA.2007.382467}
}

Ramanarayanan Viswanathan
Year: 2007
Signal-to-Noise Ratio Comparison of Amplify-Forward and Direct Link in Wireless Sensor Networks
SENSORWARE
IEEE
DOI: 10.1109/COMSWA.2007.382467

Ramanarayanan Viswanathan¹^,*

1: Department of Electrical & Computer Engineering Southern Illinois University at Carbondale Carbondale, IL 62901-6603

*Contact email: viswa@engr.siu.edu

Abstract

We compare the signal-to-noise ratio performances of an amplify-forward relay link and a direct link in a wireless sensor network. For a slow Rayleigh fading channel, an exact expression for the probability that the SNR of an amplify-forward relay link exceeds the SNR of a direct link is obtained. For a Rician fading channel, an upper bound for the corresponding probability is obtained. Numerical results indicate that, among the two fading channels considered, Rayleigh fading is more detrimental to the SNR performance of the amplify-forward relaying scheme.

Keywords: Rayleigh fading Rician fading amplify-forward cooperative relaying

Published: 2007-07-09
Publisher: IEEE
Modified: 2011-07-27

: http://dx.doi.org/10.1109/COMSWA.2007.382467