Modulation and multiple access technique using orbital angular momentum
US9537575B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2015 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Aug 4, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/044
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention as disclosed and described herein, in one aspect thereof, comprises a method for multiple access communications over a communications link involves receiving a plurality of data streams from a plurality of data sources. The plurality of data streams are grouped into a plurality of groups. Orthogonal frequency division multiplexing (OFDM) processing is applied to each of the plurality of groups. Each of the plurality of groups uses a same combination of frequency and time slot combinations in the OFDM processing. A different orthogonal function is applied to each of the OFDM processed groups to uniquely identify each of the OFDM processed group from each other and the orthogonal function processed groups are transmitted over the communications link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.