| Presentation | 1996/12/3 Recursive MAP Algorithm. Hiroshi Yamamoto, Toru Fujiwara, Takuya Koumoto, Tadao Kasami, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Using the MAP (maximum a posteriori probability) algorithm, we can minimize the symbol error probability and we can get soft output from the decoder. The Log-MAP algorithm can be implemented with addition and maximum functions, while the MAP algorithm requires multiplication. We proposed a recursive MLD (maximum likelihood decoding), procedure whose decoding complexity is very low, for linear block codes. In this paper, we review the MAP, the Log-MAP and the recursive MLD and then we discuss on the application of computing methods in the recursive MLD to the MAP algorithm. Even the most simple method, modifying a part of the Log-MAP algorithm into recursive algorithm, reduces the decoding complexity for the RM_<6,2> to 57% compared with conventional method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Block code / Linear code / Trellis diagram / MAP algorithm |
| Paper # | IT96-44 |
| Date of Issue |
| Conference Information | |
| Committee | IT |
|---|---|
| Conference Date | 1996/12/3(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Information Theory (IT) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Recursive MAP Algorithm. |
| Sub Title (in English) | |
| Keyword(1) | Block code |
| Keyword(2) | Linear code |
| Keyword(3) | Trellis diagram |
| Keyword(4) | MAP algorithm |
| 1st Author's Name | Hiroshi Yamamoto |
| 1st Author's Affiliation | Graduate School of Engineering Science, Osaka University() |
| 2nd Author's Name | Toru Fujiwara |
| 2nd Author's Affiliation | Graduate School of Engineering Science, Osaka University |
| 3rd Author's Name | Takuya Koumoto |
| 3rd Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology |
| 4th Author's Name | Tadao Kasami |
| 4th Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology |
| Date | 1996/12/3 |
| Paper # | IT96-44 |
| Volume (vol) | vol.96 |
| Number (no) | 394 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |