Passive optical network employing upconverted 16-cap signals
US5822102A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Nov 20, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2589
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
At a central facility, information for a user is converted to a carrierless AM/PM (CAP) signal, upconverted, combined with other upconverted signals destined for other users and transmitted via an analog optical fiber optic line to an optical network unit (ONU) which downconverts the CAP signals without changing their modulation format and places them on the appropriate unshielded twisted line pairs for respective users. If the user is able to receive the optical fiber directly, the ONU can be eliminated. Information may also be transmitted from the users to the central facility using the same transmission lines. Additionally, voiceband channels may be carried on the same transmission lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.