Open Access

Combined Rate and Power Allocation with Link Scheduling in Wireless Data Packet Relay Networks with Fading Channels

EURASIP Journal on Wireless Communications and Networking20072007:024695

https://doi.org/10.1155/2007/24695

Received: 19 November 2006

Accepted: 19 June 2007

Published: 23 August 2007

Abstract

We consider a joint rate and power control problem in a wireless data traffic relay network with fading channels. The optimization problem is formulated in terms of power and rate selection, and link transmission scheduling. The objective is to seek high aggregate utility of the relay node when taking into account buffer load management and power constraints. The optimal solution for a single transmitting source is computed by a two-layer dynamic programming algorithm which leads to optimal power, rate, and transmission time allocation at the wireless links. We further consider an optimal power allocation problem for multiple transmitting sources in the same framework. Performances of the resource allocation algorithms including the effect of buffer load control are illustrated via extensive simulation studies.

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Authors’ Affiliations

(1)
Department of Information Engineering, Research School of Information Sciences and Engineering, The Australian National University
(2)
Department of Electrical and Electronic Engineering, University of Melbourne

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Copyright

© M. Huang and S. Dey. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.