Method, apparatus, and device for modulating orthogonal frequency division multiplexing optical signal
US10187176B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2016 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Dec 12, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/26
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, an apparatus, and a device for modulating an orthogonal frequency division multiplexing optical signal are provided and relate to the field of optical communications technologies. The method includes: performing bit-to-symbol mapping and serial-to-parallel conversion on a baseband signal to obtain at least two sub symbol sequences of the baseband signal; determining, from all subcarriers of an OFDM signal, a subcarrier used for loading a pilot signal; updating, according to information of the pilot signal, content corresponding to the subcarrier used for loading the pilot signal; and performing inverse discrete Fourier transform, parallel-to-serial conversion, digital-to-analog conversion, and electrical amplification processing on content currently corresponding to all the subcarriers of the OFDM signal, and modulating a light wave by using processed data and a bias electrical signal, to form an OFDM optical signal loaded with the pilot signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.