Overlapped multiplexing modulation method, apparatus and system
US10630408B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2018 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Oct 11, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/24
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.