A Novel Blind Estimation Algorithm of Hop Rate for Frequency Hopping Signals
Wu Qian · Telecommunication Engineering · 2008
The commonly used techniques for estimating hop rate are short time Hartley transform, wavelet-transform and WVDs (including WVD, PWVD and SPWVD). Though they can achieve high accuracy, they are unpractical because of their computational burdens. On the other side, the short-time Fourier transform (STFT) is more efficient, but its accuracy can not be satisfying. Taking these into account, a novel method based on the Phase Derivative FFT-Least Square is proposed to balance the problem of accuracy and efficiency.Simulations show that this method can exactly and efficiently estimate the hop rate of real frequency hopping signals.