| Presentation | 2004/1/9 Performance Analysis of BP-based Algorithms for Irregular Low-Density Parity-Check Codes Akinori OHASHI, Tomoaki OHTSUKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this report we analyze the performance of irregular low-density parity-check (LDPC) codes with three belief propagation (BP) based decoding algorithms, namely the uniformly most powerful (UMP) BP-based algorithm, the normalized BP-based algorithm, and the offset BP-based algorithm, using density evolution (DE). We also modify semi-random simple irregular LDPC codes with reduced encoding complexity to improve the performance. Furthermore, we optimize the code construction of the modified irregular semi-random LDPC codes with three BP-based algorithms, and determine optimum parameters for the normalized BP-based algorithm and the offset BP-based algorithm. From the numerical results, we show that the performance of the modified semi-random simple irregular LDPC codes with the offset BP-based algorithm with optimum parameters can be very close to that with the BP algorithm. We also show that the modified semi-random simple irregular LDPC codes with the UMP BP-based algorithm and the offset BP-based algorithm can achieve very good trade-off between the performance and decoding complexity. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LDPC / BP-based algorithm / Density Evolution |
| Paper # | DPS2003-182,SAT2003-179,RCS2003-277 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2004/1/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Analysis of BP-based Algorithms for Irregular Low-Density Parity-Check Codes |
| Sub Title (in English) | |
| Keyword(1) | LDPC |
| Keyword(2) | BP-based algorithm |
| Keyword(3) | Density Evolution |
| 1st Author's Name | Akinori OHASHI |
| 1st Author's Affiliation | Graduate School of Science and Technology, Tokyo University of Science() |
| 2nd Author's Name | Tomoaki OHTSUKI |
| 2nd Author's Affiliation | Faculty of Science and Tehnology, Tokyo University of Science |
| Date | 2004/1/9 |
| Paper # | DPS2003-182,SAT2003-179,RCS2003-277 |
| Volume (vol) | vol.103 |
| Number (no) | 550 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |