Block turbo codes for efficient image transmission over wireless channels

Sonia Zaibi; Mahmoud Ammar; Karine Amis; Ramesh Pyndiah; Samir Saoudi

doi:10.1117/12.525701

18 January 2004 Block turbo codes for efficient image transmission over wireless channels

Sonia Zaibi, Mahmoud Ammar, Karine Amis, Ramesh Pyndiah, Samir Saoudi

Proceedings Volume 5308, Visual Communications and Image Processing 2004; (2004) https://doi.org/10.1117/12.525701
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

In this paper we propose an image coding scheme based on Block Turbo Codes (BTC) for protecting SPIHT coded images transmitted over wireless channels. An Unequal Error Protection (UEP) scheme using different product codes is also presented. The optimization of the UEP scheme under a transmission budget constraint is investigated. Performance of the proposed system are first evaluated over Gilbert-Elliott (GE) channels. They are then compared to the well-known system of Sherwood and Zeger, through numerical simulations over a single path Rayleigh fading channel. Then, we present an optimized mobile image transmission framework involving a multiuser asynchronous DS-CDMA transmission system over Rayleigh multipath channels. Simulation results for the 512x512 Lena image, transmitted over the ITU Vehicular A channel, show that a significant gain in PSNR is obtained by using the SIC/RAKE multiuser detector in comparison with a conventional detection by the RAKE receiver. Furthermore, performance are also improved when introducing the UEP scheme.

Citation Download Citation

Sonia Zaibi, Mahmoud Ammar, Karine Amis, Ramesh Pyndiah, and Samir Saoudi "Block turbo codes for efficient image transmission over wireless channels", Proc. SPIE 5308, Visual Communications and Image Processing 2004, (18 January 2004); https://doi.org/10.1117/12.525701

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KEYWORDS

Image transmission

Image compression

Distortion

Sensors

Forward error correction

Signal detection

Receivers

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