Combined source/channel (de-)coding: can a priori information be used twice?

Author

Hindelang, T. ; Fingscheidt, T. ; Seshadri, N. ; Cox, R.V.

Author_Institution

AT&T Labs.-Res., Florham Park, NJ, USA

fYear

2000

fDate

2000

Firstpage

266

Abstract

In the digital transmission of speech, audio, images and video signals residual redundancy is often left after source coding due to the complexity and delay constraints. This redundancy remains both inside one block or frame but also in a time correlation of subsequent frames. Both kinds of redundancy are used in an iterative process of source and channel decoding to improve the quality of the transmitted parameters. For better understanding, Gaussian distributed and time correlated parameters are used

Keywords

Gaussian distribution; combined source-channel coding; computational complexity; iterative decoding; redundancy; Gaussian distributed parameters; a priori information; audio; combined source/channel coding; combined source/channel decoding; complexity; delay; digital transmission; images; iterative process; quality; residual redundancy; source coding; speech; time correlated parameters; time correlation; video signals; AWGN channels; Bit error rate; Convolutional codes; Interleaved codes; Iterative decoding; Iterative methods; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2000. Proceedings. IEEE International Symposium on

Conference_Location

Sorrento

Print_ISBN

0-7803-5857-0

Type

conf

DOI

10.1109/ISIT.2000.866564

Filename

866564