Channel coding with unequal error protection for multi-mode source coded information

摘要

Source-coded information from a multi-mode source encoder is channel coded for transmission in a communication system. A multi-mode channel encoder associates a different channel coding error protection profile with each of the modes of the multi-mode source encoder. The channel encoder determines a mode used by the multi-mode source encoder to source code a given frame or other designated portion of the information, and channel codes the source-coded portion of the information utilizing an error protection profile identified at least in part based on the determined mode. A multi-mode channel decoder is operative to hypothesize that a particular one of the modes of the multi-mode source encoder was used to source code the designated portion of the information. The channel decoder analyzes at least part of a set of corresponding channel-coded information using an error protection profile associated with the hypothesized mode of the multi-mode source encoder, in order to determine if the error protection profile and the hypothesized mode are appropriate for respective channel decoding and source decoding of the designated portion of the information.