摘要
In this paper, we present a Joint Source-Channel Decoding algorithm (JSCD) for Low-Density Parity Check (LDPC) codes by modifying the Sum-Product Algorithm (SPA) to account for the source redun-dancy, which results from the neighbouring Huffman coded bits. Simulations demonstrate that in the presence of source redundancy, the proposed algorithm gives better performance than the Separate Source and Channel Decoding algorithm (SSCD).
In this paper, we present a Joint Source-Channel Decoding algorithm （JSCD） for Low-Density Parity Check （LDPC） codes by modifying the Sum-Product Algorithm （SPA） to account for the source redundancy, which results from the neighbouring Huffman coded bits. Simulations demonstrate that in the presence of source redundancy, the proposed algorithm gives better performance than the Separate Source and Channel Decoding algorithm （SSCD）.
关键词
低密度奇偶性校验码
变量长度码
Huffman码
SPA
结点信道源
Low-Density Parity Check codes （LDPC）
Variable Length Codes （VLC）
Huffman code
Sum-Product Algorithm（SPA）
Joint Source-Channel Decoding （JSCD）
