Hybrid network station frequency hopping parameter blind estimation method based on STFT-SPWVD
A hybrid network and blind estimation technology, applied in the field of signal processing, can solve the problems of not considering the frequency conversion time of the actual communication system and hybrid networking mode, low estimation accuracy of frequency hopping signal parameters, and high estimation complexity, so as to increase anti-noise performance, reduced estimation complexity, and simplified parameter estimation
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[0036] The purpose, technical solutions and advantages of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0037] refer tofigure 1 , a STFT-SPWVD-based blind estimation method for frequency hopping parameters of hybrid network stations, the implementation steps are as follows:
[0038] Step 1, performing noise reduction processing on the time-frequency domain signal X(t, f) of the signal received by the antenna.
[0039] Since the frequency hopping communication system is often used in complex electromagnetic environments, the system is greatly affected by noise, so it is necessary to perform noise reduction processing on the signal received by the system. The specific steps are...
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