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  • Research Article
  • Open Access

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

EURASIP Journal on Wireless Communications and Networking20062006:017526

  • Received: 1 October 2005
  • Accepted: 21 March 2006
  • Published:


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.


  • Resource Allocation
  • Performance Analysis
  • System Application
  • Dominant Factor
  • Cellular System


Authors’ Affiliations

Department of ECE, McGill University, 3480 University street, Montréal, Québec, H3A 2A7, Canada


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© 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.