DocumentCode :
1686889
Title :
Performance of Cooperative Multi-Hop Wireless Systems over Log-Normal Fading Channels
Author :
Di Renzo, Marco ; Graziosi, Fabio ; Santucci, Fortunato
Author_Institution :
Access Technol. Area, Telecommun. Technol. Center of Catalonia, Barcelona
fYear :
2008
Firstpage :
1
Lastpage :
6
Abstract :
In recent years, there has been a growing interest in antenna sharing systems, and many analytical frameworks have been developed to analyze the performance of various relying protocols in a variety of propagation environments. However, among the different propagation scenarios, the less investigated are those characterized by log-normal fading. Motivated by this consideration, we propose a comprehensive framework for performance analysis of multi-hop multi-branch wireless systems over log-normal fading channels. More specifically, the developed framework allows to estimate the performance of amplify and forward (AF) relay methods for both channel state information (CSI-) assisted analog relays, and semi-blind and blind analog relays. In particular, the contribution of the paper is twofold: i) first of all, by relying on the Gauss quadrature rule (GQR) representation of the moment generation function (MGF) for a log-normal distribution, we develop very accurate formulas for important performance indexes; ii) then, in order to simplify the computational burden of the former framework for some system setups, we also propose an approximation, which is based on the improved Schwartz-Yeh (I-SY) method. We show with numerical and simulation results that the proposed approximation provides a good trade-off between accuracy and complexity.
Keywords :
diversity reception; fading channels; log normal distribution; relays; Gauss quadrature rule; amplify and forward relay methods; channel state information; cooperative multihop wireless systems; improved Schwartz-Yeh method; log-normal fading channels; moment generation function; Antennas and propagation; Channel state information; Fading; Frame relay; Gaussian approximation; Gaussian distribution; Log-normal distribution; Performance analysis; Protocols; State estimation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
ISSN :
1930-529X
Print_ISBN :
978-1-4244-2324-8
Type :
conf
DOI :
10.1109/GLOCOM.2008.ECP.861
Filename :
4698636
Link To Document :
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