| DVB-T与地面数字电视国标信道估计算法分析 |
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| 引用本文： | 解玉芳,郭里婷. DVB-T与地面数字电视国标信道估计算法分析[J]. 电视技术, 2010, 34(7) |
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| 作者姓名： | 解玉芳 郭里婷 |
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| 作者单位： | 福州大学,物理与信息工程学院;福建省数字电视工程研究中心,福建,福州,350002 |
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| 摘 要： | 介绍了DVB-T基于导频的信道估计算法与国标基于PN序列的迭代相关检测信道估计算法,对其进行了估计精度、均衡后的误码率性能、运算量、信道估计对冗余开销的影响等方面的比较,并理论推导出DVB-T基于导频的信道估计方法加入虚拟载波后导致的误差,最后得出国标信道估计具备令人满意性能的结论.
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| 关 键 词： | 信道估计 导频 PN序列 地面数字电视广播 DVB-T标准 GB20600-2006 |
Analysis on Channel Estimation of DVB-T and Chinese DTTB System |
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| XIE Yu-fang,GUO Li-ting. Analysis on Channel Estimation of DVB-T and Chinese DTTB System[J]. Ideo Engineering, 2010, 34(7) |
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| Authors: | XIE Yu-fang GUO Li-ting |
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| Affiliation: | XIE Yu-fang,GUO Li-ting (College of Physics and Information Engineering of Fuzhou University,DTV Engineering Research Center of Fujian Province,Fuzhou 350002,China) |
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| Abstract: | In this paper, two channel estimation algorithms respectively based on pilot frequency in DVB-T system and PN turbo correlation detection in Chinese DTTB system are introduced. The two algorithms are compared by several aspects of estimation precision, error rate performance after equalization, operation quantity and the influence of system redundancy for channel estimation. The error due to adding virtual carriers in the channel estimation algorithm based on pilot frequency in DVB-T system is deduced theor... |
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| Keywords: | GB20600-2006 |
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