Overlapped multiplexing modulation method, apparatus and system
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United States of America Patent
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Issued Date -
Oct 25, 2018
app pub date -
Jun 25, 2018
filing date -
Jun 25, 2018
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The disclosure relates to an overlapped multiplexing modulation method, apparatus, and system. An initial envelope waveform that is smooth in a time domain or frequency domain is generated based on design parameters; the initial envelope waveform is shifted in the time domain or frequency domain at a preset spectrum interval based on times of overlapped multiplexing, to obtain subcarrier envelope waveforms; an input digital signal sequence is converted into a positive-negative symbol sequence; each symbol in the positive-negative symbol sequence is multiplied by a subcarrier envelope waveform corresponding to the symbol, to obtain modulated envelope waveforms of subcarriers; the modulated envelope waveforms of the subcarriers are superimposed in the time domain or frequency domain, to obtain a time-domain or frequency-domain complex modulated envelope waveform; and the time-domain or frequency-domain complex modulated envelope waveform is transformed, to obtain a time-domain or frequency-domain complex modulated envelope waveform.
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