Title :
Channel coding and transmission aspects for wireless multimedia
Author :
Hagenauer, Joachim ; Stockhammer, Thomas
Author_Institution :
Inst. of Commun. Eng., Munchen Univ. of Technol., Germany
fDate :
10/1/1999 12:00:00 AM
Abstract :
Multimedia transmission has to handle a variety of compressed and uncompressed source signals such as data, text, image, audio, and video. On wireless channels the error rates are high and joint source/channel coding and decoding methods are advantageous. Also, the system architecture has to adapt to the bad channel conditions. Several examples of a joint design are given. We especially advocate the use of rate-compatible punctured systematic recursive convolutional (RCPRSC) codes which are show to lead to a straightforward and versatile unequal error protection (UEP) design. In addition, the high-end receiver could use soft outputs and source-controlled channel decoding for even better performance
Keywords :
combined source-channel coding; convolutional codes; decoding; error statistics; land mobile radio; multimedia communication; RCPRSC codes; UEP design; audio; channel coding; channel conditions; compressed source signals; data; decoding methods; error rates; high-end receiver; image; joint design; joint source/channel coding; mobile channels; performance; punctured systematic recursive convolutional codes; rate-compatible convolutional codes; soft outputs; source-controlled channel decoding; system architecture; text; uncompressed source signals; unequal error protection; video; wireless channels; wireless multimedia transmission; Channel coding; Decoding; Delay; Error analysis; Error correction; Error correction codes; Image coding; Mobile communication; Speech; Video compression;
Journal_Title :
Proceedings of the IEEE
