Patent ID: 9379926
Filing Date: 2016-06-28
CPC Classification: H04L

Claim Text:
1. Device for generating Orbital Angular Momentum modes for radio communications, the device comprising: at least one first circuit module configured 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 further comprises second circuit modules configured to: apply, to each said respective input digital signal, a respective space modulation associated with a respective Orbital Angular Momentum mode having a respective topological charge to generate a corresponding modulated digital signal carrying said respective Orbital Angular Momentum mode; the respective space modulation comprises interpolating said respective input digital signal and phase-modulating the interpolated input digital signal so as to generate the corresponding phase-modulated digital signal carrying said respective Orbital Angular Momentum mode, having the given sampling period, and occupying the given available frequency bandwidth; and provide an output digital signal based on the modulated digital signal(s) for the radio communications.