| 结构半随机LDPC码的递增冗余HARQ方案 |
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| 引用本文： | 文红,符初生,靳蕃.结构半随机LDPC码的递增冗余HARQ方案[J].电讯技术,2006,46(4):18-21. |
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| 作者姓名： | 文红 符初生 靳蕃 |
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| 作者单位： | 电子科技大学,通信抗干扰国家级重点实验室,成都,610054;东南大学,移动通信国家重点实验室,南京,210096;电子科技大学,通信抗干扰国家级重点实验室,成都,610054;西南交通大学,信息科学技术学院,成都,610031 |
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| 基金项目： | 东南大学校科研和教改项目 |
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| 摘 要： | 提出了结构半随机LDPC码，分析了其在不同码率时，编、译码具有兼容性的特性。介绍了基于结构半随机LDPC码的递增冗余HARQ方案，给出了这种方案的吞吐量性能封闭解。在AWGN信道和Rayleigh衰落信道下，通过仿真将新方案的性能和随机LDPC码的性能进行了比较，结果显示，结构半随机LDPC码的递增冗余HARQ方案性能接近随机LDPC码，但编、译码更简单，参数选择范围更广。
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| 关 键 词： | 高速数据传输 差错控制 结构半随机LDPC码 HARQ 递增冗余 |
| 文章编号： | 1001-893X（2006）04-0018-04 |
| 收稿时间： | 2006-03-13 |
| 修稿时间： | 2006-03-132006-05-11 |
Incremental Redundancy Hybrid ARQ Scheme Based on Structured Semi-Random LDPC Codes and its Performance Analysis |
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| WEN Hong,FU Chu-sheng,JIN Fan.Incremental Redundancy Hybrid ARQ Scheme Based on Structured Semi-Random LDPC Codes and its Performance Analysis[J].Telecommunication Engineering,2006,46(4):18-21. |
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| Authors: | WEN Hong FU Chu-sheng JIN Fan |
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| Affiliation: | 1. National Key Lab of Communication,University of Electronic Science and Technology of China, Chengdu 610054, China; 2. State Key Lab of Mobile Communication, Southeast University, Nanjing 210096, China; 3. School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | Structured semi-random LDPC code is presented,and its character with rate-compatible is analyzed.An incremental redundancy hybrid ARQ(HARQ) scheme based on structured semi-random LDPC codes is introduced.The throughput of the new HARQ scheme is studied and the closed-form solutions are obatind.Furthermore,the throughput of the new HARQ scheme is simulated.It shows that for arbitrary block fading channel,comprising AWGN channel,the performance of IR-HARQ schemes based on SSR-(LDPC)is the same as those based on random LDPC.But the encoding and decoding of SSR-(LDPC) is simpler,and the wider range changing of code rates of SSR-LDPC can be obtained than those of random LDPC. |
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| Keywords: | HARQ |
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