Patent · US Active

Sub-sampled carrier phase recovery

US9270384B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Andreas Bisplinghoff · Forchheim, DE
Chris Fludger · Nuremberg, DE

Key dates

Filing date	Jan 14, 2014
Grant date	Feb 23, 2016
Priority date	—
Expiry date	Apr 3, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2027/0067
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Presented herein are sub-sampled carrier phase recovery techniques. In accordance with one example, a plurality of consecutive symbols associated with a received optical signal is obtained. Carrier phase recovery of the optical signal is performed using one or more carrier phase estimation stages. At each of the one or more carrier phase estimation stages, a subset of the plurality of consecutive symbols is selected for use in carrier phase estimation. The subset of symbols selected for use in carrier phase estimation at each of the one or more stages comprises symbols that provide the most phase recovery information for each of the one or more stages.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.