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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. Especially we advocate the use of rate-compatible punctured systematic recursive convolutional (RCPRSC) codes which are shown 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., |
