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Optimal power allocation for layered multimedia transmission via broadcast over rayleigh fading channels

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3 Author(s)
Mohammad Shaqfeh ; Department of Electrical Engineering, Texas A&M University in Qatar, Qatar ; Wessam Mesbah ; Hussein Alnuweiri

We consider a multimedia transmission scheme that is based on the combination of layered source coding with successive refinement and on using a broadcast strategy to send the layers over Rayleigh fading channels. We optimize the power allocated to each layer in order to maximize the average user satisfaction defined by a utility function of the total decoded rate. This optimization problem is non-convex, and hence difficult to solve. However, in this paper, we build up on our recently proposed mathematical framework, and we describe, as the main contribution, an efficient algorithm to solve this problem. Using numerical examples, we show that significant gains in the outage probability can be achieved by applying our proposed algorithm.

Published in:

Multimedia Computing and Information Technology (MCIT), 2010 International Conference on

Date of Conference:

2-4 March 2010