Open Access

Adaptive Downlink Resource Allocation Strategies for Real-Time Data Services in OFDM Cellular Systems

EURASIP Journal on Wireless Communications and Networking20062006:017526

https://doi.org/10.1155/WCN/2006/17526

Received: 1 October 2005

Accepted: 21 March 2006

Published: 2 May 2006

Abstract

This paper presents a detailed performance analysis of adaptive downlink resource allocation based on users' instantaneous channel responses using power minimization (PM) and bandwidth constrained power minimization (BCPM) strategies. This study shows that, in cellular systems, where interference is a dominant factor, the link outage performance of a resource allocation strategy varies significantly depending on the user channel parameters. In particular, both analytical and simulation results indicate that the PM strategy outperforms BCPM in a mild shadowing environment. However, in severe shadowing conditions, this trend is reversed. This assessment holds true for both flat and frequency-selective fading.

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Authors’ Affiliations

(1)
Department of ECE, McGill University

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Copyright

© N. Damji and T. Le-Ngoc 2006

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.