DIGITAL QAM AND VSB MODULATOR AND DEMODULATOR

A digital data demodulator/decoder (30) for either a quadrature amplitude (QAM) or vestigial sideband (VSB) modulated signal includes a quadrature detector (32, 33) feeding through digital filters (38, 39) to a decoder (50) which switches between the in-phase and quadrature outputs of the digital fi...

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Bibliographic Details
Main Author LEO MONTREUIL
Format Patent
LanguageEnglish
Spanish
Published 30.04.1998
Edition6
Subjects
BASIC ELECTRONIC CIRCUITRY
DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MODULATION
PICTORIAL COMMUNICATION, e.g. TELEVISION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A digital data demodulator/decoder (30) for either a quadrature amplitude (QAM) or vestigial sideband (VSB) modulated signal includes a quadrature detector (32, 33) feeding through digital filters (38, 39) to a decoder (50) which switches between the in-phase and quadrature outputs of the digital filters (38, 39). Un desmodulador/descodificador de datos digital (30) para una señal modulada tanto de amplitud de caudratura (MAC) o banda lateral vestigial (BLV) incluye un detector de cuadratura (32, 33) alimentando a través de filtros digitales (38, 39) a un descodificador (50) que conmuta entre las salidas en fase y de cuadratura de los filtros digitales (38, 39).
Bibliography:Application Number: MX19970002496