| 状态网格图的LDPC码在OFDM系统中的应用 |
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| 引用本文： | 郭栋,王中训,王兴成,于心乔,胡小赫. 状态网格图的LDPC码在OFDM系统中的应用[J]. 电视技术, 2010, 34(12) |
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| 作者姓名： | 郭栋 王中训 王兴成 于心乔 胡小赫 |
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| 作者单位： | 烟台大学,光电信息科学技术学院,山东,烟台,264005;烟台大学,光电信息科学技术学院,山东,烟台,264005;烟台大学,光电信息科学技术学院,山东,烟台,264005;烟台大学,光电信息科学技术学院,山东,烟台,264005;烟台大学,光电信息科学技术学院,山东,烟台,264005 |
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| 摘 要： | 介绍了LDPC码的编译码技术,提出了一种新颖的2状态网格图译码算法,研究了该码在OFDM系统中的性能,对不同的译码算法进行了比较.仿真结果表明,LDPC码在OFDM基带传输系统中用2状态网格图对其译码能够更好的对错误码进行纠错,提高码字性能,信息传输速率会大大提高.
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| 关 键 词： | 正交频分复用 低密度奇偶校验码 网格图译码 |
Application of State Trellis LDPC Code in OFDM System |
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| GUO Dong,WANG Zhong-xun,WANG Xing-cheng,YU Xin-qiao,HU Xiao-he. Application of State Trellis LDPC Code in OFDM System[J]. Ideo Engineering, 2010, 34(12) |
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| Authors: | GUO Dong WANG Zhong-xun WANG Xing-cheng YU Xin-qiao HU Xiao-he |
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| Affiliation: | GUO Dong,WANG Zhong-xun,WANG Xing-cheng,YU Xin-qiao,HU Xiao-he(Institute of Science and Technology for Opto-Electronics Information,Yantai University,Shandong Yantai 264005,China) |
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| Abstract: | In this paper the encoding and decoding methods of LDPC code are introduced,a novel two-state trellis decoding algorithm is presented.The performance of the OFDM system based on LDPC code is researched and compared with that of different decoding algorithms.Simulation results show that the LDPC codes in the OFDM base-band transmission system using two-state trellis decoding has much stronger error correcting capability than others.The information transmission rate can be greatly improved. |
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| Keywords: | orthogonal frequency division multiplexing(OFDM) low-density parity-check(LDPC) codes trellis decoding |
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