Title :
Extending source codes for error resilience
Author :
Kopansky, Arkady ; Bystrom, Maja
Author_Institution :
Dept. of ECE, Drexel Univ., Philadelphia, PA, USA
Abstract :
A form of combined source-channel coding is investigated in which error resilient source codes replace the typical concatenation of compression with channel coding. When very low bit rate transmission over poor quality channels, low coding complexity, or partial decoding of the source is required, these codes can outperform the traditional concatenated schemes. A simple, although suboptimal, technique is given for constructing the codes and a code-specific bound on performance is given. Simulation results are shown for a number of error resilient codes.
Keywords :
combined source-channel coding; data compression; error correction codes; maximum likelihood decoding; variable length codes; MAP decoding; VLC; bit rate transmission; code construction; code-specific upper bound; coding complexity; computer simulation; concatenated scheme; error resilient source codes; maximum a posteriori; source code extension; source partial decoding; source-channel coding; variable-length code; Data compression;
Conference_Titel :
Data Compression Conference, 2003. Proceedings. DCC 2003
Print_ISBN :
0-7695-1896-6
DOI :
10.1109/DCC.2003.1193993
