| Presentation | 2011-12-12 A Computationally Efficient Early Stopping Method for DVB-S2 LDPC Decoder(JC-SAT 2011) Gwan Seok Jang, In Ki Lee, Dae Ig Chang, Deock Gil Oh, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Satellite communication requires powerful forward error correction scheme because of long transmission delay. Thus, the low density parity check (LDPC) code is adopted for the forward error correction code in DVB-S2 standard. Because decoding process of LDPC code is based on the iterative soft decoding, it is critical fact for decoder to reduce the average number of iterations. Therefore we briefly introduce a conventional hard decision based early stopping method. We also introduce that the conventional early stopping method is combined with a horizontal shuffling scheduling (HSS) algorithm which is one of layered decoding scheme. However, the computational complexity of this conventional hard decision based method is still high, because this computes the early stopping criterion at the end of iterations. In this paper, we propose a computationally efficient early stopping method which computes the early stopping criterion at specific iterations. The simulation results show that the proposed early stopping method reduces the number of iterations of LDPC decoding algorithm. Furthermore, the computational complexity of proposed early stopping method is fewer than those of the conventional HD based early stopping method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Early stooping / LDPC / Layered Decoding / Horizontal shuffling scheduling / HSS / DVB-S2 / Satellite / Forward Error Correction code |
| Paper # | SAT2011-40 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2011/12/5(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Computationally Efficient Early Stopping Method for DVB-S2 LDPC Decoder(JC-SAT 2011) |
| Sub Title (in English) | |
| Keyword(1) | Early stooping |
| Keyword(2) | LDPC |
| Keyword(3) | Layered Decoding |
| Keyword(4) | Horizontal shuffling scheduling |
| Keyword(5) | HSS |
| Keyword(6) | DVB-S2 |
| Keyword(7) | Satellite |
| Keyword(8) | Forward Error Correction code |
| 1st Author's Name | Gwan Seok Jang |
| 1st Author's Affiliation | Electronic and Telecommunication Research Institute, Department of Satellite & Wireless Convergence, University of Science and Technology() |
| 2nd Author's Name | In Ki Lee |
| 2nd Author's Affiliation | Electronic and Telecommunication Research Institute, Department of Satellite & Wireless Convergence |
| 3rd Author's Name | Dae Ig Chang |
| 3rd Author's Affiliation | Electronic and Telecommunication Research Institute, Department of Satellite & Wireless Convergence |
| 4th Author's Name | Deock Gil Oh |
| 4th Author's Affiliation | Electronic and Telecommunication Research Institute, Department of Satellite & Wireless Convergence |
| Date | 2011-12-12 |
| Paper # | SAT2011-40 |
| Volume (vol) | vol.111 |
| Number (no) | 336 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |