Research on Communication Individual Identification Method Based on PCA-NCA and CV-SVM

In recent years, high-dimensional data has often appeared in the fields of science and industry, such as computer vision, pattern recognition, biological information, and aerospace. Feature dimension reduction and selection are the process of reducing data from high dimensionality to low dimensionality to reveal the nature of the data. In the field of wireless communication, in view of the feature redundancy caused by the high-dimensional features of wireless device startup transient signals, this paper converts the high-dimensional features of signals into low-dimensional features that are conducive to classification through the feature dimensionality reduction and selection method based on PCA-NCA. In addition, this paper also carried out parameter optimization for SVM classifier, and the established CV-SVM classifier improved the classification performance. This paper also carries out simulation devices on the measured start-up signals of ten identical walkie-talkies. When the SNR is greater than 0 dB, the recognition accuracy of the PCA-NCA algorithm is 10% higher than recognition accuracy of the PCA algorithm alone; when the SNR is greater than 10 dB.