A SPICE Realization of the Delay-Rational Green's-Function-Based Method for Multiconductor Transmission Lines

Feature Extraction Method of Transmission Signal in Electronic Communication Network Based on Symmetric Algorithm

“…Firstly, Fourier-transform is used to transform the signal from the time domain to the frequency domain, the signal energy is normalized in the frequency domain, then the central frequency and effective bandwidth of the signal spectrum are calculated, and the bandwidth is normalized. The purpose of energy normalization is to eliminate the influence of the distance of the emitter [8]. The purpose of bandwidth normalization is to reduce the computational complexity of feature extraction, and eliminate the influence of out-of-band noise and the change of sweep width or code length.…”

“…] is used to describe the training sample set, i.e., the signal sequence of network communication identified in Section 2.3.1, and the optimal hyperplane is represented by ω T •x + b = 0, then, based on µ•(z), the original signal sequence space of network communication is mapped to a high-dimensional space by formula (8), in which the optimal classification surface of signal features is established:…”