| OFDM信号频率偏移盲估计算法 |
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| 引用本文： | 宋文政,薛海鹏,张之和,刘玻,华熹曦.OFDM信号频率偏移盲估计算法[J].通信技术,2011(11):10-12. |
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| 作者姓名： | 宋文政 薛海鹏 张之和 刘玻 华熹曦 |
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| 作者单位： | 72671部队; |
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| 摘 要： | 该算法通过联合多个正交频分复用（OFDM,Orthogonal Frequency Division Multiplexing）符号对频率偏移进行盲估计。该算法不需要数据辅助,利用接收信号循环前缀的相关性,通过计算相同子信道所传数据的相位差,来实现信号的小数倍频偏估计。利用相邻OFDM符号中频域导频的延迟相关运算来实现整数倍频偏估计。仿真结果表明该算法估计精度高,适合实际信号的应用。
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| 关 键 词： | 联合相关 频率偏移 循环前缀 OFDM信号 |
Blind Parameter Estimation Algorithm for Frequency Offset of OFDM Signal |
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| SONG Wen-zheng,XUE Hai-peng,ZHANG Zhi-he,LIU Bo,HUA Xi-xi.Blind Parameter Estimation Algorithm for Frequency Offset of OFDM Signal[J].Communications Technology,2011(11):10-12. |
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| Authors: | SONG Wen-zheng XUE Hai-peng ZHANG Zhi-he LIU Bo HUA Xi-xi |
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| Affiliation: | SONG Wen-zheng,XUE Hai-peng,ZHANG Zhi-he,LIU Bo,HUA Xi-xi(PLA Unit 72671,Jinan Shandong 250022,China) |
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| Abstract: | In combination of several OFDM symbols,a parameter estimation algorithm for the frequency offset of OFDM signal is proposed.This algorithm requires no training data,with the correlation of cyclic prefix of received signal,and by calculating the phase difference of data on the same sub-channel,implements the estimation of fractional frequency offset.And with close OFDM signals frequency frame delay correlation,the integral frequency offset could be estimated.Simulation results show that the proposed algorith... |
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| Keywords: | combined correlation frequency offset cyclic prefix OFDM signals |
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