One of the ways in which statistical dependence is manifested between frequency and amplitude deviations produced by a white noise perturbing an FM wave, is examined: it is shown that the noise pulses present on instantaneous frequency have a correspondence, probability near 1, with analogous negative pulses on the amplitude deviation. A detailed study on this fact is reported.An amplitude-phase correlation FM demodulator is proposed which, exploiting the above phenomenon, largely eliminates the effect of noise pulses on output, though giving rise to some non-linear distortion of the demodulated signal. This distortion can be kept within modest values as soon as the modulation index is sufficiently above 1.

Coincidence of Pulses in Amplitude and Frequency Deviations Produced by a Random Noise Perturbing an FM wave. An Amplitude-Phase Correlation FM Demodulator / L., Calandrino; Immovilli, Gianni. - In: ALTA FREQUENZA. - ISSN 0002-6557. - STAMPA. - XXXVI:(1967), pp. 170E - 726-175E - 731.

Coincidence of Pulses in Amplitude and Frequency Deviations Produced by a Random Noise Perturbing an FM wave. An Amplitude-Phase Correlation FM Demodulator

IMMOVILLI, Gianni
1967

Abstract

One of the ways in which statistical dependence is manifested between frequency and amplitude deviations produced by a white noise perturbing an FM wave, is examined: it is shown that the noise pulses present on instantaneous frequency have a correspondence, probability near 1, with analogous negative pulses on the amplitude deviation. A detailed study on this fact is reported.An amplitude-phase correlation FM demodulator is proposed which, exploiting the above phenomenon, largely eliminates the effect of noise pulses on output, though giving rise to some non-linear distortion of the demodulated signal. This distortion can be kept within modest values as soon as the modulation index is sufficiently above 1.
XXXVI
170E - 726
175E - 731
Coincidence of Pulses in Amplitude and Frequency Deviations Produced by a Random Noise Perturbing an FM wave. An Amplitude-Phase Correlation FM Demodulator / L., Calandrino; Immovilli, Gianni. - In: ALTA FREQUENZA. - ISSN 0002-6557. - STAMPA. - XXXVI:(1967), pp. 170E - 726-175E - 731.
L., Calandrino; Immovilli, Gianni
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/649633
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