Wireless image transmission using multiple-description-based concatenated codes

Daniel Grobe Sachs; Anand Raghavan; Kannan Ramchandran

doi:10.1117/12.382963

19 April 2000 Wireless image transmission using multiple-description-based concatenated codes

Daniel Grobe Sachs, Anand Raghavan, Kannan Ramchandran

Proceedings Volume 3974, Image and Video Communications and Processing 2000; (2000) https://doi.org/10.1117/12.382963
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

This work introduces a multiple-description product code which aims at optimally generating multiple, equally-important wavelet image descriptions. The codes used are a concatenated channel code including a row (outer) code based on RCPC codes with CRC error detection and a source-channel column (inner) code consisting of the scalable SPIHT image coder and an optimized array of unequal protection Reed-Solomon erasure- correction codes. By systematically matching the unequal protection codes to the embedded source bitstream using a simple, fast optimizer that can run in real time, we allow image quality to degrade gracefully as fade worsens and maximize expected image quality at the receiver. This approach to image transmission over fading channels offers significant improvements in both peak and expected image quality when compared to current state-of-the-art techniques. Our packetization scheme is also naturally suited for hybrid packet-network/wireless channels, such as those used for wireless Internet access.

Citation Download Citation

Daniel Grobe Sachs, Anand Raghavan, and Kannan Ramchandran "Wireless image transmission using multiple-description-based concatenated codes", Proc. SPIE 3974, Image and Video Communications and Processing 2000, (19 April 2000); https://doi.org/10.1117/12.382963

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