| 摘要 |
A decoding method and device for concatenated code is disclosed, which are used for decoding the concatenated code made up of Low Density Parity Check (LDPC) codes and Reed-Solomon (RS) codes. The method includes: performing the LDPC soft-decision iterative decoding of bit-deinterleaved data stream, and performing the check decision of the decoded LDPC codewords by utilizing check matrix; performing the byte-deinterleaving of the information bits of the decoded LDPC codewords, and converting the check information of the LDPC codewords into the puncturing information of RS codewords; selecting the decoding mode according to the puncturing information of the RS codewords, and performing RS decoding. By adopting this scheme, the performance of the RS decoding may be improved without increasing the computing complexity, such that the reception performance of China Mobile Multimedia Broadcasting (CMMB) terminal is improved significantly compared with the conventional method. |
