Modulation technique for transmitting and receiving radio vortices
US9379926B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2012 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Nov 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A device for generating Orbital Angular Momentum (OAM) modes for radio communications. The device is designed to receive one or more input digital signals, each of which has a respective sampling period which is a respective multiple of a given sampling period, and occupies a frequency bandwidth which is a respective fraction of a given available frequency bandwidth. The device is operable to apply, to each input digital signal, a respective space modulation associated with a respective OAM mode having a respective topological charge to generate a corresponding digital signal carrying the respective OAM mode. The device is configured to apply, to each input digital signal, the respective space modulation by interpolating said input digital signal and phase-modulating the interpolated input digital signal so as to generate a corresponding phase-modulated digital signal carrying the respective OAM mode, having the given sampling period, and occupying the given available frequency bandwidth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.