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| Study on the distribution law of random code structure of irregular LDPC codes and its application in eliminating short cycles | |
| 作者单位： | MA LinHua（State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China;Aeronautical Electronics Engineering Department, Air Force Engineering University, Engineering Institute, Xi'an 710038, China） ; CHANG YiLin （State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China） ; Wang ShengDa（Aeronautical Electronics Engineering Department, Air Force Engineering University, Engineering Institute, Xi'an 710038, China） ; |
| 基金项目： | 国家自然科学基金;华为科学基金 |
| 摘 要： | The distribution law of the random code structure of randomly constructed irregu- lar low-density parity-check (LDPC) codes is studied. Based on the Progressive Edge-Growth (PEG) algorithm, a new algorithm which can both eliminate short cy- cles and keep the distribution of the random code structure is presented. The ex- perimental results show that the performance of the irregular LDPC codes con- structed by the new algorithm is superior to that of the PEG algorithm. |
| 收稿时间： | 15 April 2005 |
| 修稿时间： | 18 August 2006 |
Study on the distribution law of random code structure of irregular LDPC codes and its application in eliminating short cycles |
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| Authors: | Ma LinHua Chang YiLin Wang ShengDa |
| Affiliation: | 1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China;Aeronautical Electronics Engineering Department, Air Force Engineering University, Engineering Institute, Xi'an 710038, China 2. State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China 3. Aeronautical Electronics Engineering Department, Air Force Engineering University, Engineering Institute, Xi'an 710038, China |
| Abstract: | The distribution law of the random code structure of randomly constructed irregu- lar low-density parity-check (LDPC) codes is studied. Based on the Progressive Edge-Growth (PEG) algorithm, a new algorithm which can both eliminate short cy- cles and keep the distribution of the random code structure is presented. The ex- perimental results show that the performance of the irregular LDPC codes con- structed by the new algorithm is superior to that of the PEG algorithm. |
| Keywords: | Low-density parity-check codes cycles random code structure random distribution characteristics |
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