A Novel Classification Method for 2FSK and Bi-Signal
Pengwu Tian, Yuan Jia, Hongyi Yu · 2008
A novel classification method for 2FSK and bi-signal is proposed in this paper. The bi-signal is two signals which appear at the same time. In words, they are mixed on time domain. The spectrum of both 2FSK and bi-signal has two peaks. So it is difficult to classify whether the two spectrum peaks is from 2FSK or bi-signal. Using short time Fourier transform, we devise a method that can recognize 2FSK and bi-signal. The simulation results demonstrate that the correct recognition rate of the proposed method can achieve 95% at 5 dB.