Detection and Demodulation of AM Signals Using Two Dimensional Spectral Surface

Majed Omar Al-Dwairi; Dmitriy E. Skopin

doi:10.15866/irecos.v12i4.14709

Detection and Demodulation of AM Signals Using Two Dimensional Spectral Surface

Majed Omar Al-Dwairi^(1*), Dmitriy E. Skopin⁽²⁾

^(*) Corresponding author

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DOI: https://doi.org/10.15866/irecos.v12i4.14709

Abstract

This paper is designed to detect AM signals, evaluate its parameters and consequently provides demodulation procedure using the methods of Short Time Fourier Transform (STFT) and Discrete Fourier Transform (DFT) combined with two Dimensional Spectral Surface (2DSS). The proposed technique is noise robust since the energies of modulated signal and noise located in different position on 2DSS which could be discarded during the analysis. Comparing with the Hilbert Transform the proposed method can extract envelopes of different carriers transmitted in the same channel.
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Keywords

Signal Processing; Amplitude Modulation; AM Demodulation; Two-Dimensional Spectral Surface

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