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Turbo-codes used for compressed image transmission over frequency selective fading channel

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2 Author(s)
Xiaofan Fei ; Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong ; Tszmei Ko

The turbo-code is a newly developed channel coding technique with amazing error correcting capability. Turbo-codes are applied to JPEG compressed images in a wireless environment. The wireless channel is modeled as a frequency selective fading channel with a two-ray profile. Different combinations of source and channel code rates are simulated for image transmission. In addition, unequal error protection for the header syntax of JPEG compressed images is considered. It is found that turbo-codes combined with unequal error protection give excellent performance for compressed image transmission, even at a high delay spread. The optimum joint source/channel coding schemes are given at different delay spreads. The image qualities are compared both subjectively and objectively

Published in:

Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE  (Volume:2 )

Date of Conference:

3-8 Nov 1997