Performance analysis and optimization of multi-hop communication systems

Authors:
Mazen O. Hasna;Mohamed-Slim Alouini
Affiliations:
Department of Electrical Engineering, University of Qatar, P.O. Box 2713, Doha, Qatar;Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN
Venue:
Wireless communications systems and networks
Year:
2004

Citing 4
Cited 0

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End-to-end performance of transmission systems with relays over Rayleigh-fading channels

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Abstract

End-to-end performance analysis of multi-hop transmissions over Rayleigh fading channels is presented. Several types of relays for both regenerative and non-regenerative systems are considered. In addition, optimum power allocation over these hops is investigated as it is considered a scarce resource in the context of relayed transmission. Numerical results show that regenerative systems outperform non-regenerative systems specially at low average signal-to-noise ratios, or when the number of hops is large. They also show that power optimization enhances the system performance, specially if the links are highly unbalanced in terms of their average fading power or if the number of hops is large. Interestingly, they also show that non-regenerative systems with optimum power allocation can outperform regenerative systems with no power optimization.