Method, device and system for complex carrier modulation
US8989310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2011 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | May 30, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, device and system for complex carrier modulation are provided in the disclosure, wherein e−iωt or eiωt is used as a carrier frequency to perform carrier modulation on a to-be-carried signal. The modulated signal transmitted in a medium is a rotating complex signal. The method can enable right and left frequency bands to carry independent information. Therefore the spectrum utility ratio is improved. Employing the method for complex carrier modulation provided in the disclosure can use the right and left frequency spectrum resources adequately, and the loss of signal energy is small, therefore the capacity of a channel is improved greatly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.