Title :
Multi-level priority transmission of images over a turbo-coded channel
Author :
Barazande-Pour, M. ; Mark, J.W. ; Khandani, A.K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
The application of turbo codes (TC) for multi-level priority transmission of image signals over an AWGN channel is presented. The unequal error protection property of the turbo codes is introduced and matched to the unequal error protection requirement for the transmission of coded image signals. Compared to simply distributing the source bits across the TC block bit positions, the proposed method yields superior performance
Keywords :
Gaussian channels; block codes; channel coding; convolutional codes; data compression; discrete cosine transforms; image coding; transform coding; visual communication; AWGN channel; DCT coded images; block codes; image signals; image transmission; multilevel priority transmission; recursive systematic convolutional coders; source bits; subjective evaluation; turbo coded block bit positions; turbo coded channel; turbo codes; unequal error protection; AWGN; Block codes; Computer errors; Decoding; Error correction; Error correction codes; Image coding; Image reconstruction; Protection; Turbo codes;
Conference_Titel :
Communications, Computers and Signal Processing, 1997. 10 Years PACRIM 1987-1997 - Networking the Pacific Rim. 1997 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-3905-3
DOI :
10.1109/PACRIM.1997.620406
