| 一种适用于ARQ系统的码率兼容IRA码 |
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| 引用本文： | 高宏峰,刘万贵,许宗泽.一种适用于ARQ系统的码率兼容IRA码[J].电子科技大学学报（自然科学版）,2005,34(4):440-443. |
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| 作者姓名： | 高宏峰 刘万贵 许宗泽 |
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| 作者单位： | 1.南京航空航天大学信息科学与技术学院 南京 210016; |
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| 摘 要： | 提出用不规则重复累积(IRA)码构造码率兼容码。该码由删除法和扩展法两种方法构造。扩展法由高码率IRA码为母码,以RA码为扩展子码,克服了删除法在删除率较高时性能下降的缺点。仿真结果表明,RC-IRA码在HARQ系统中的吞吐率接近码率兼容turbo码,但译码复杂度远远低于Turbo码。
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| 关 键 词： | 重复累积码 码率兼容码 混合自动重复请求 |
| 收稿时间： | 2004-11-04 |
| 修稿时间： | 2004-11-04 |
Rate-Compatible Irregular Repeat-Accumulate Codes for ARQ schemes |
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| GAO Hong-feng,LIU Wan-gui,XU Zong-ze.Rate-Compatible Irregular Repeat-Accumulate Codes for ARQ schemes[J].Journal of University of Electronic Science and Technology of China,2005,34(4):440-443. |
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| Authors: | GAO Hong-feng LIU Wan-gui XU Zong-ze |
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| Affiliation: | 1.College of Information Science & Technology,Nanjing University of Aeronautics & Astronautics Nanjing 210016;2.TaiJi Computer Corporation Limited Beijing 100083 |
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| Abstract: | This paper focuses on construction of efficient rate-compatible irregular repeat accumulate (RC-IRA) codes over a wide rate range. Puncturing approach is the conventional approach. But the asymptotic performance shows that it only works well when the amount of puncturing is small. To extend the dynamic rate range, a special extending approach is proposed. Repeat-accumulate codes are used to produce padded parity bits. Combined the two approaches, RC-IRA codes are constructed. Simulation results show that the throughput of RC-IRA codes applied to ARQ system have performance close to that of turbo ARQ system, yet with lower decoding complexity. |
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| Keywords: | irregular repeat accumulate codes rate compatible codes hybrid automatic repeatrequest |
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