alexa Modulation identification for OFDM in multipath circumstance based on support vector machine
Engineering

Engineering

Journal of Telecommunications System & Management

Author(s): Hongwei Wang, Bingbing Li, Yongjuan Wang

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This paper discusses the modulation recognition for OFDM signals in lower signal noise ratio (SNR) and multipath circumstance. As the studies on signal recognition seldom take the multipath circumstance into account, and the traditional recognition method either have the disadvantages in the case of limited train samples or have the low recognition rate in lower SNR, a new method of modulation identification for OFDM signals in multipath circumstance based on support vector machine (SVM) is presented. To an SVM classifier, how to select the feature parameters to construct a feature vector makes a great impact on its performance. In this paper, the cumulants and the wavelets used as classification feature vectors are investigated. Simulation results indicate that the proposed feature vectors have good performances in lower SNR and multipath circumstance, and the SVM classifierýs generalizing ability proves to be good.

This article was published in IEEE and referenced in Journal of Telecommunications System & Management

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