| OFDM数字调幅广播时频同步问题的研究 |
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| 引用本文： | 严添明.OFDM数字调幅广播时频同步问题的研究[J].福建师大福清分校学报,2007(5):29-34. |
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| 作者姓名： | 严添明 |
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| 作者单位： | 福建湄洲湾职业技术学院,福建莆田,351254 |
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| 摘 要： | 从OFDM系统模型入手,介绍OFDM系统信号波形特点,分析同步错误对OFDM信号的影响,简要介绍时频同步算法的优缺点,重点介绍联合估计定时和频偏的时频定时同步算法,它可以完成对采样定时和符号的同步,实现简单,准确度高,在信噪比低的情况下也能正常工作,也适用于无线多径瑞利衰落环境下的OFDM符号同步方法。
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| 关 键 词： | 正交频分复用 同步 瑞利衰落信道 联合估计定时和频偏的算法 |
| 文章编号： | 1008-3421（2007）05-0029-06 |
| 修稿时间： | 2007-01-05 |
Study on the problem of Time-frequency synchronization of Digital Amplitude Modulation Radio of OFDM |
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| YAN Tianming.Study on the problem of Time-frequency synchronization of Digital Amplitude Modulation Radio of OFDM[J].Journal of Fuqing Branch of Fujian Normal University,2007(5):29-34. |
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| Authors: | YAN Tianming |
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| Institution: | Meizhouwan Vocational Technology College, Putian Fujian 351254 |
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| Abstract: | This paper starts from OFDM system model and introduces the feature of waveform of the OFDM system signal.Analysis is the made on several points:the affection of synchronization signal error on OFDM signal,the advantages and disadvantages of time-frequency synchronization method,and,the combined estimate time and frequency bias of time-frequency synchronization method.The algorithm can help realize the synchronization of timing sample and symbol,with easy performance and high fidelity.It also applies to the case of wireless multipath Rayleigh fading channel of OFDM transmission for synchronization. |
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| Keywords: | OFDM Synchronization Rayleigh fading channel Combined estimate time and frequency bias of time-frequency synchronization arithmetic |
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