A Low-Complexity UEP Methodology Demonstrated on a Turbo-Encoded Wavelet Image Satellite DownlinkReportar como inadecuado




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EURASIP Journal on Wireless Communications and Networking

, 2008:342415

Multimedia over Wireless Networks

Abstract

Realizing high-quality digital image transmission via a satellite link, while optimizing resource distribution and minimizing battery consumption, is a challenging task. This paper describes a methodology to optimize a turbo-encoded wavelet-based satellite downlink progressive image transmission system with unequal error protection UEP techniques. To achieve that goal, we instantiate a generic UEP methodology onto the system, and demonstrate that the proposed solution has little impact on the average performance, while greatly reducing the run-time complexity. Based on a simple design-time distortion model and a low-complexity run-time algorithm, the provided solution can dynamically tune the system-s configuration to any bitrate constraint or channel condition. The resulting system outperforms in terms of peak signal-to-noise ratio PSNR, a state-of-the-art, fine-tuned equal error protection EEP solution by as much as 2 dB.

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Autor: Eric Salemi - Claude Desset - Antoine Dejonghe - Jan Cornelis - Peter Schelkens

Fuente: https://link.springer.com/







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