Loading algorithms for subband coded image transmission using multicarrier modulation

Haito Zheng; Kuo Juey Ray Liu

doi:10.1117/12.334670

28 December 1998 Loading algorithms for subband coded image transmission using multicarrier modulation

Haito Zheng, Kuo Juey Ray Liu

Proceedings Volume 3653, Visual Communications and Image Processing '99; (1998) https://doi.org/10.1117/12.334670
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

We present a new parallel framework for multimedia data transmission over spectrally shaped channels using multicarrier modulation. Source images are first decomposed into a set of layers with different perceptual importance. Unlike the traditional approaches, the layers are transmitted simultaneously, each occupying a number of subchannels. We develop parallel loading algorithms which distribute the transmitted power and data rate among the subchannels efficiently, to provide unequal error protection. A power optimized serial transmission system is also developed. Simulation results show that the parallel transmission system achieve significant performance improvement compared to the optimized serial transmission and the existing loading algorithms developed for data transmission. Performance comparison under different parameters are also presented. The proposed algorithms are well suited for both Additive Gaussian White Noise (AGWN) channels and spectrally shaped channels which are typical in ADSL systems. Numerical comparison for different parameters are also given.

Citation Download Citation

Haito Zheng and Kuo Juey Ray Liu "Loading algorithms for subband coded image transmission using multicarrier modulation", Proc. SPIE 3653, Visual Communications and Image Processing '99, (28 December 1998); https://doi.org/10.1117/12.334670

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KEYWORDS

Modulation

Algorithm development

Curium

Distortion

Signal to noise ratio

Image transmission

Multimedia

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