An efficient algorithm for optimum power allocation in a decode-and-forward cooperative system with orthogonal transmissions

Paul A. Anghel, Mostafa Kaveh, Zhi Quan Luo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

We propose an efficient algorithm that computes the maximum achievable rate of a decode-and-forward multi-relay cooperative system with orthogonal transmissions under total power constraint. In [1] we have argued that in a system with Q relays the optimum rate can be found by solving Q convex problem despite the fact that the optimization problem is not convex and it belongs to a class of problems with variational inequality constraints. In this paper we show that the number of computations can be reduced from solving Q convex problem to solving only [log(Q)] + 1 convex problems. The proposed algorithm facilitates comparisons with competing alternatives in cooperative systems such as the amplify-and-forward or the compress-and-forward strategies.

Original languageEnglish (US)
Title of host publication2006 IEEE International Conference on Acoustics, Speech, and Signal Processing - Proceedings
PagesIV685-IV688
StatePublished - Dec 1 2006
Event2006 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006 - Toulouse, France
Duration: May 14 2006May 19 2006

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume4
ISSN (Print)1520-6149

Other

Other2006 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006
Country/TerritoryFrance
CityToulouse
Period5/14/065/19/06

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