Robust image communication using bandwidth reducing and expanding mappings

Combined source-channel coding can be an efficient way to exploit a noisy channel for transmitting signals representing natural sources. In this paper, we propose a coding system for transmission of still images on a time discrete, amplitude continuous, additive white Gaussian noise channel. The cod...

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Bibliographic Details
Published inConference Record of the Thirty-Fourth Asilomar Conference on Signals, Systems and Computers (Cat. No.00CH37154) Vol. 2; pp. 1384 - 1388 vol.2
Main Authors Coward, H., Ramstad, T.A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2000
Subjects
Bandwidth
Channel bank filters
Decoding
Delay
Error correction codes
Filter bank
Image communication
Protection
Robustness
Signal to noise ratio
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Summary:Combined source-channel coding can be an efficient way to exploit a noisy channel for transmitting signals representing natural sources. In this paper, we propose a coding system for transmission of still images on a time discrete, amplitude continuous, additive white Gaussian noise channel. The coder is an extension of earlier work by Lervik and Ramstad (1996). We introduce a method for bandwidth expansion which gives extra protection to the most important symbols. An improvement of the PSNR up to 5 dB is demonstrated for the proposed coder compared to the reference coder.
ISBN:9780780365148
0780365143
ISSN:1058-6393
2576-2303
DOI:10.1109/ACSSC.2000.911218