Title :
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
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;
Conference_Titel :
Information Theory, 2000. Proceedings. IEEE International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
0-7803-5857-0
DOI :
10.1109/ISIT.2000.866564
