OAM multiplexing communication system and inter-mode interference elimination method
US11228363B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2018 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Sep 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03305
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transmitting station includes a plurality of transmitting weight multiplication units multiplying each of the transmission signal sequences by a transmitting weight, to be converted into MTX signals corresponding to UCAs forming an M-UCA so as to output the converted signals, and MTX transmitting OAM mode generation units inputting the signals corresponding to the UCAs and performing DFT on the input signals, so as to output to the corresponding UCA; and a receiving station includes MRX receiving OAM mode demultiplex units inputting signals from each of the UCAs forming the M-UCA and performing IDFT on the input signals, so as to output by each of received signal sequences, and a plurality of receiving weight multiplication units multiplying for each of them by a receiving weight, so as to demultiplex the spatially multiplexed received signal sequences and to output them in which interference between spatially multiplexed OAM modes is suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.