| Presentation | 2005-07-21 Construction Method and Mapping Method of LDPC Codes for M-ary QAM Shigeru UCHIDA, Wataru MATSUMOTO, Akira OHTSUKA, Fumio ISHIZU, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, Low-Density Parity-Check (LDPC) codes which can achieve the performance near the Shannon limit with Sum-Product decoding algorithm are studied to apply to some wireless communication systems. To increase the bit rate of wireless communication systems, it is required to improve the reliability of the communication over M-ary QAM, and we have already proposed the method to search the degree distribution for M-ary QAM. In this paper, we propose the construction method and mapping method of LDPC codes for M-ary QAM regarding with the degree distribution for M-ary QAM and the structure of Low-Density Generation Matrix (LDGM). We evaluated the performance of our proposed method using a computer simulation, and we confirmed that our proposed method was effective. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LDPC Codes / Degree Distribution / Density Evolution / M-ary QAM |
| Paper # | RCS2005-41 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2005/7/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Construction Method and Mapping Method of LDPC Codes for M-ary QAM |
| Sub Title (in English) | |
| Keyword(1) | LDPC Codes |
| Keyword(2) | Degree Distribution |
| Keyword(3) | Density Evolution |
| Keyword(4) | M-ary QAM |
| 1st Author's Name | Shigeru UCHIDA |
| 1st Author's Affiliation | Information Technology R&D Center, Mitsubishi Electric Corporation() |
| 2nd Author's Name | Wataru MATSUMOTO |
| 2nd Author's Affiliation | Information Technology R&D Center, Mitsubishi Electric Corporation |
| 3rd Author's Name | Akira OHTSUKA |
| 3rd Author's Affiliation | Information Technology R&D Center, Mitsubishi Electric Corporation |
| 4th Author's Name | Fumio ISHIZU |
| 4th Author's Affiliation | Information Technology R&D Center, Mitsubishi Electric Corporation |
| Date | 2005-07-21 |
| Paper # | RCS2005-41 |
| Volume (vol) | vol.105 |
| Number (no) | 196 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |