Title :
Turbo-codes used for compressed image transmission over Rayleigh fading channel
Author :
Fei, Xiaofan ; Ko, Tszmei
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
Turbo-code is a newly developed channel coding technique with amazing error correcting capability. It has attracted lots of attention in recent years, In this paper, turbo-codes are applied to JPEG compressed images in a wireless environment. 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 very low channel signal-to-noise ratio. The optimum joint source/channel coding schemes are given at different signal-to-noise ratios. The image qualities are compared both subjectively and objectively
Keywords :
Rayleigh channels; channel coding; code standards; concatenated codes; convolutional codes; fading; image coding; land mobile radio; source coding; telecommunication standards; visual communication; JPEG compressed images; Rayleigh fading channel; channel code rate; compressed image transmission; error correcting codes; header syntax; image quality; noisy mobile radio; optimum joint source/channel coding; parallel concatenated convolutional codes; performance; signal-to-noise ratio; source code rate; turbo codes; unequal error protection; wireless environment; wireless multimedia; Channel coding; Decoding; Fading; Image coding; Image communication; Protection; Signal to noise ratio; Transform coding; Turbo codes; Videos;
Conference_Titel :
Universal Personal Communications Record, 1997. Conference Record., 1997 IEEE 6th International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3777-8
DOI :
10.1109/ICUPC.1997.627216
