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Subcarrier Modulation Recognition Based on MFCC for OFDM Signal
Received date: 2015-12-23
Online published: 2025-05-30
In order to overcome the poor performance, vague decision threshold and the incomplete recognition mode problem of the sub-carrier modulation recognition for OFDM signal in the multipath channel, a novel modulation recognition method for OFDM signal based on Melfrequency cepstrum coefficient (MFCC) was proposed. The MFCC features were firstly extracted by the algorithm about speech recognition. Then we calculated the average standard deviation and average change rate of MFCC and used the combination of these two parameters as the classification features to identify the modulation type of carrier. Experimental results showed that the proposed method could effectively recognize the modulation type under multipath channel and it had a high correct rate to classify the modulation of OFDM signal.
Key words： OFDM; classification feature; MFCC; recursive order-reduction
ZHANG Haichuan , LEI Yingke . Subcarrier Modulation Recognition Based on MFCC for OFDM Signal[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2016 , 36(6) : 166 -170 . DOI: 10.15892/j.cnki.djzdxb.2016.06.040
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