Optical communication system
US7471903B1 · kind B1 · utility
8Cited by
10References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2002 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Jul 6, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/63
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical communications system has a transmitter which uses modulation using multiple level phase and/or amplitude modulation, and is adaptable to provide modulation for different signals using different selections of the multiple levels. A receiver is able to perform demodulation from the multiple level phase and/or amplitude modulation, and is adaptable to provide demodulation of signals modulated using the different selections of the multiple levels. This provides an adaptive modulation system, so that different bit rates can be employed for different links.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.