Method and apparatus for generating a quadrature modulated signal near zero frequency for transmission

Methods and apparatuses are provided for generating a quadrature modulated signal for transmission in an electronic device. Samples are obtained from a quadrature amplitude modulation (QAM) signal at a predefined sampling rate to generate a signal spectrum. The samples are interpolated to move the s...

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Bibliographic Details
Main Author Yang, Sung Moon Michael
Format Patent
LanguageEnglish
Published 12.04.2022
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:Methods and apparatuses are provided for generating a quadrature modulated signal for transmission in an electronic device. Samples are obtained from a quadrature amplitude modulation (QAM) signal at a predefined sampling rate to generate a signal spectrum. The samples are interpolated to move the signal spectrum on a frequency axis. Modulation is performed on the interpolated samples based on a digital carrier frequency to move the signal spectrum on the frequency axis. Digital to analog conversion and analog filtering are performed on the modulated samples in a real part of the signal spectrum to generate a quadrature modulated signal for transmission.
Bibliography:Application Number: US201916700505