KEYWORDS: Digital signal processing, Signal processing, Fiber optics, Telecommunications, Statistical analysis, Signal attenuation, Analog electronics, Analytical research, Phase shift keying, Fourier transforms
The high-performance methods of multi-stage digital processing of linear signals of fiber optic transmission systems in the spectral and time domain with the use of Fourier transform methods are proposed. Based on the proposed methods of signal processing, a digital device for restoring of linear signals in fiber-optic transmission systems is developed. The advantage of the device is high performance, which enables digital processing of linear signals in the spectral region without loss of information.
The method of resolving power enhancement of analog-digital conversion path of jitter analyzers in fiber-optical networks is suggested in the research. The analog-digital path is designed on the basis of the principle of phase-plane correction of dynamic errors and is characterized by high resolving power.
KEYWORDS: Signal processing, Phase shifts, Clocks, Digital signal processing, Quantization, Interference (communication), Fiber optics, Data communications, Analytical research, Fourier transforms
The method of improving the dynamic range of analog-to-digital conversion path of jitter analyzers in optical-fiber transmission systems in the conditions of dispersion distortions of optical signals is suggested in the work. The impact of the clock frequency jitter of an analog-to-digital converter on the noise features of the analog-to-digital conversion path by paralleling the process of the analog-to-digital conversion of signals with the correction of clock frequency jitter has been analyzed.
The spectral method of the jitter parameters estimation in fiber optics transmission systems is being suggested. The suggested method is featured with high accuracy at the expense of the statistical stability improvement of the results, obtained during the implementation of overlapping fast Fourier transform.
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