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

Author

Fei, Xiaogan ; Ko, Tszmei

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong

Volume

2

fYear

1997

fDate

3-8 Nov 1997

Firstpage

629

Abstract

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

Keywords

channel coding; code standards; convolutional codes; delays; diversity reception; error correction codes; fading; image coding; land mobile radio; source coding; telecommunication standards; visual communication; JPEG compressed images; channel code rate; compressed image transmission; convolutional codes; error correcting code; frequency selective fading channel; header syntax; high delay spread; image compression standard; image quality; joint source/channel coding; mobile radio; performance; source code rate; turbo-codes; two-ray profile; unequal error protection; wireless channel; wireless environment; Channel coding; Delay; Error correction; Error correction codes; Fading; Frequency; Image coding; Image communication; Transform coding; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

0-7803-4198-8

Type

conf

DOI

10.1109/GLOCOM.1997.638406

Filename

638406