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LDPC-based Joint Source Channel Coding and Decoding ...
We define the R s c = l n as the source coding rate, and R c c = l m as the channel coding rate. The overall rate of the system is R = n m. The LDPC-based JSC message-passing decoding is performed on a Tanner graph with the BP algorithm by exchanging extrinsic log-likelihood ratios (LLRs) between the source and the channel LDPC decoders....