| LTE系统中Reed-Muller码的编译码算法 |
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| 引用本文： | 陈发堂,何坚龙. LTE系统中Reed-Muller码的编译码算法[J]. 重庆邮电大学学报(自然科学版), 2010, 22(4): 395-399 |
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| 作者姓名： | 陈发堂 何坚龙 |
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| 作者单位： | 重庆邮电大学,通信与信息工程学院,重庆,400065;重庆邮电大学,通信与信息工程学院,重庆,400065 |
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| 摘 要： | 在3GPP LTE物理层协议中，信道质量指示(channel quality indicator，CQI)与混合自动重传请求应答(hybrid automatic repeat-request acknowledgement，HARQ-ACK)均采用了基于Reed-Muller码的超码编码方式。与TD-SCDMA物理层协议中的TFCI（transport format combination indicator）编码类似，但3GPP LTE系统中的编码矩阵采用了更复杂的交织技术，增加了更多的掩码，这使得接收端的译码难度增大。针对3GPP LTE系统中编码矩阵的特点，利用快速哈达玛变换(fast Hadamard transformation，FHT)，给出了一种快速的译码算法。仿真结果表明了该算法的有效性，该算法已应用于LTE-TDD无线综合测试仪表的开发中。
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| 关 键 词： | 长期演进(LTE) Reed-Muller码 快速哈达玛变换 混合自动重传请求应答(HARQ) 信道质量指示(CQI) |
| 收稿时间： | 2010-01-20 |
Reed-Muller coding in long term evolution |
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| CHEN Fa-tang,He Jian-long. Reed-Muller coding in long term evolution[J]. Journal of Chongqing University of Posts and Telecommunications, 2010, 22(4): 395-399 |
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| Authors: | CHEN Fa-tang He Jian-long |
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| Affiliation: | School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, P.R.China |
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| Abstract: | In 3GPP LTE (long term evolution) physical layer protocol, Both CQI (channel quality indicator) and HARQ-ACK (hybrid automatic repeat request acknowledgement) adopted a method called super code based on Reed-Muller. It is similar to the encoding of TFCI (transport format combination indicator) in TD-SCDMA physical layer protocol. But the coding matrix used more complex interleaver technology and increased more masks in 3GPP LTE. It made receiver s decoding difficult. According to the characteristics of coding matrix, this paper used FHT (fast Hadamard transformation) and gave an effective decoding algorithm of Reed-Muller. Simulation results show the effectiveness of the algorithm, which has been applied to LTE-TDD wireless integrated test instrument. |
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