Frequency domain optical channel estimation
US9680574B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2015 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Nov 30, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03159
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical transceiver in an optical communications network, comprising a receiver configured to receive an optical signal comprising an X-polarization component that comprises a first frame and a Y-polarization component that comprises a second frame. The optical transceiver also comprises a processor coupled to the receiver and configured to determine, in a time domain, a phase estimate according to the first frame and the second frame, determine, in a frequency domain, a channel estimate for the optical signal according to a relationship between the first frame, the second frame, and the phase estimate, and determine a compensated optical signal according to the channel estimate. The optical transceiver further comprises a transmitter coupled to the processor and configured to transmit the compensated optical signal to a downstream component in the optical communications network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.