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1. WO2017186861 - METHOD AND DEVICE FOR REDUCING NOISE IN A MODULE SIGNAL

Publication Number WO/2017/186861
Publication Date 02.11.2017
International Application No. PCT/EP2017/060087
International Filing Date 27.04.2017
IPC
G06F 17/18 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
10Complex mathematical operations
18for evaluating statistical data
H04L 27/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
CPC
G06F 17/18
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
10Complex mathematical operations
18for evaluating statistical data ; , e.g. average values, frequency distributions, probability functions, regression analysis
H04B 1/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
06Receivers
10Means associated with receiver for limiting or suppressing noise or interference
H04L 27/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
10Frequency-modulated carrier systems, i.e. using frequency-shift keying
14Demodulator circuits
H04L 27/22
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
18Phase-modulated carrier systems, i.e. using phase-shift keying
22Demodulator circuits
H04L 27/2334
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
18Phase-modulated carrier systems, i.e. using phase-shift keying
22Demodulator circuits
233using non-coherent demodulation
2334using filters
Applicants
  • COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES [FR]/[FR]
Inventors
  • MOUKHARSKI, Iouri
Agents
  • LEBKIRI, Alexandre
Priority Data
165378728.04.2016FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD AND DEVICE FOR REDUCING NOISE IN A MODULE SIGNAL
(FR) PROCEDE ET DISPOSITIF DE REDUCTION DE BRUIT DANS UN SIGNAL MODULE
Abstract
(EN)
The present invention pertains essentially to a method of reducing noise in a modulated electrical signal (a(t)) exhibiting a carrier frequency (f0), the method comprising the following steps: - acquiring (E1) in the time domain the modulated signal so as to obtain a plurality of pieces (k) of the modulated signal; - calculating (E2), by transformation into the frequency domain, a spectrum (Ak) of each piece of the modulated signal, the spectrum comprising an upper sideband (BLS) extending over a span of frequencies greater than the carrier frequency, and a lower sideband (BLI) extending over a span of frequencies lower than the carrier frequency, the spectrum comprising first values belonging to the upper sideband and second values belonging to the lower sideband; - calculating (E3) a power spectrum (Pk)for each piece of the signal modulated on the basis of the first values of the upper sideband and of the second values of the lower sideband of the spectrum of the spectrum of said each piece of the modulated signal; - calculating (E4) an average (PM) of the power spectra.
(FR)
La présente invention se rapporte essentiellement à un procédé de réduction de bruit dans un signal électrique modulé (a(t)) présentant une fréquence porteuse (f0), le procédé comportant les étapes suivantes : - acquérir (E1) dans le domaine temporel le signal modulé de manière à obtenir une pluralité de morceaux (k) du signal modulé; - calculer (E2), par transformation dans le domaine fréquentiel, un spectre (Ak) de chaque morceau du signal modulé, le spectre comportant une bande latérale supérieure (BLS) s'étendant sur une plage de fréquences supérieures à la fréquence porteuse, et une bande latérale inférieure (BLI) s'étendant sur une plage de fréquences inférieures à la fréquence porteuse, le spectre comportant des premières valeurs appartenant à la bande latérale supérieure et des deuxièmes valeurs appartenant à la bande latérale inférieure; - calculer (E3) un spectre de puissance (Pk) pour chaque morceau du signal modulé à partir des premières valeurs de la bande latérale supérieure et des deuxièmes valeurs de la bande latérale inférieure du spectre du spectre dudit chaque morceau du signal modulé; - calculer (E4) une moyenne (PM) des spectres de puissance.
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