| 基于LDPC编码的自适应数据重传方法 |
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| 引用本文： | 吴湛击,傅婷婷,欧阳子月,王文博.基于LDPC编码的自适应数据重传方法[J].系统工程与电子技术,2010,32(9):1793-1798. |
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| 作者姓名： | 吴湛击 傅婷婷 欧阳子月 王文博 |
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| 作者单位： | 北京邮电大学信息与通信工程学院, 北京 100876 |
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| 基金项目： | 国家重大科技专项，国家自然科学基金，教育部科学技术研究重点项目(109013)资助课题 |
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| 摘 要： | 提出一种新的基于低密度校验(low density parity check, LDPC)码的自适应数据重传方法。在信道条件差（信噪比低）时, 该方法采用母码为低码率的LDPC码编码，校验位打孔的重传方式；在信道条件好（信噪比高）时,采用母码为高码率的LDPC码编码，信息位打孔的重传方式。该方法既能提高硬件利用率、节约能耗，又能保证在最差信道下数据传输的可靠性。
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| 关 键 词： | 低密度校验码 混合自动重传 信息位打孔 校验位打孔 |
LDPC-based adaptive hybrid automatic retransmission request method |
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| WU Zhan-ji,FU Ting-ting,OUYANG Zi-yue,WANG Wen-bo.LDPC-based adaptive hybrid automatic retransmission request method[J].System Engineering and Electronics,2010,32(9):1793-1798. |
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| Authors: | WU Zhan-ji FU Ting-ting OUYANG Zi-yue WANG Wen-bo |
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| Institution: | School of Information and Telecommunication Engineering, Beijing Univ. of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | A novel low density parity check(LDPC) based adaptive hybrid automatic retransmission request(HARQ) method is proposed.A few mother LDPC codes with different code rates can be used for the automatic modulation coding-HARQ procession.When the channel is bad,e.g.,the SNR is low,the low-code-rate mother LDPC code is chosen,and the parity-puncturing HARQ should be used for the retransmission.When the channel is good,e.g.,the SNR is high,the high-code-rate mother LDPC is selected,and the data-puncturing HARQ sho... |
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| Keywords: | low density parity check (LDPC) code hybrid automatic retransmission request (HARQ) data-puncturing parity-puncturing |
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