Joint Source-channel Decoding Based on VLC and LDPC

This paper proposes a joint source-channel decoding based on the VLC and LDPC codes. The method uses the residual information in the VLC source sequence to modify the soft information in the LDPC iterative decoding algorithm. The result shows it enhances the abilities of correcting errors and speeds up the convergence. In the end, it gives the results on the BSC channel.