Abstract
The Detection Performance of the Dual-Sequence-Frequency-Hopping Signal via Stochastic Resonance Processing under Color Noise
Highlights
The Dual Sequence Frequency Hopping (DSFH) communication mode draw lessons from "the medium is the message" [1], [2]
With the reason that the f0 and the sample frequency fs are set as 1 kHz and 200 kHz, the intermediate frequency (IF) signal can be viewed as low frequency signal, which can be processed by Low-pass Filter (LF)
The noise processed by LF becomes color and nonGaussian, whose spectrum can be assumed as a Lorentzian form
Summary
The Dual Sequence Frequency Hopping (DSFH) communication mode draw lessons from "the medium is the message" [1], [2]. How to raise the detection performance of the DSFH’s signal under color noise is the most factual problem. Some researchers apply the stochastic resonance (SR) to detect signals under color noise. SR as a nonlinear detector can transact parts of the noise energy to the signal [6,7,8], raising the detection performance lower than the threshold [9], which can expand the DSFH’s application further. The effects of color noise on DSFH signal processing have not yet explored sufficiently. We will deal with the DSFH signal processing by a bi-stable SR system subjected to the color noise. Via introducing the decision time, the periodic steady-state solution of FPE is obtained.
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