Optical signal transmitter and optical communication system using constant modulus formats, and method for generating modulation codes
US9806739B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 8, 2016 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Dec 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/5561
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical data coding method includes at least steps of selecting a modulation scheme comprising an X-polarization constellation format having first and second amplitude rings with circular grids corresponding to predetermined phase angles and a Y-polarization constellation format having the first and second amplitude rings with the circular grids corresponding to the predetermined phase angles, arranging a first part of the symbol on a first circular grid of the first amplitude ring on the X-polarization constellation format, and arranging a second part of the symbol on a second circular grid of the second amplitude ring on the Y-polarization constellation format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.