| 一种基于高阶矩的OFDM信号调制盲识别算法 |
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| 引用本文： | 王彬,葛临东.一种基于高阶矩的OFDM信号调制盲识别算法[J].数据采集与处理,2006,21(1):37-41. |
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| 作者姓名： | 王彬 葛临东 |
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| 作者单位： | 信息工程大学信息工程学院,郑州,450002 |
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| 摘 要： | 提出一种Rayleigh衰落信遭务件下的多载波调制盲识别算法，用以区分多载波调制信号（如OFDM）和数字单载波调制信号（如MPSK，MQAM，MFSK）。该算法不需要预先知道信号的载波频率和波特率，只需从中频信号直接进行识别处理。算法中利用信号的高阶统计量作为分类特征，采用信噪比（SNR）与特征参数联合估计的方法完成自动分类，仿真结果表明在SNR高于0dB时识别率大于95％。
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| 关 键 词： | 调制识别 正交频分复用 高阶矩 中频信号 瑞利衰落信道 |
| 文章编号： | 1004-9037（2006）01-0037-05 |
| 收稿时间： | 2005-04-01 |
| 修稿时间： | 2005-09-20 |
Algorithm for Blind Identification of OFDM Signal Based on Higher Order Moments |
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| Wang Bin,Ge Lindong.Algorithm for Blind Identification of OFDM Signal Based on Higher Order Moments[J].Journal of Data Acquisition & Processing,2006,21(1):37-41. |
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| Authors: | Wang Bin Ge Lindong |
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| Affiliation: | Institute of Information Engineering, Information Engineering University, Zhengzhou,450002, China |
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| Abstract: | An algorithm for identifying multi-carrier modulated signals(OFDM) from single-carrier modulated signals(MPSK,MQAM and MFSK) in Rayleigh fading channels is presented.The algorithm directly processes bandpass signals without the prior information about the carrier frequency and the baud rate of received signals.The joint estimation of the signal to noise ratio(SNR) and the feature value based on higher order moments can realize the automatic recognition.Simulation results show that the classification rate reaches over 95% when SNR is above 0 dB. |
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| Keywords: | modulation identification OFDM higher order moments bandpass signal Rayleigh fading channel |
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