Coherent optical receiver with adaptive equalizer initialization system
US8532504B2 · kind B2 · utility
7Cited by
13References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 28, 2010 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Aug 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An adaptive-equalizer initialization system performs three functions: frequency offset estimation, taps estimation for chromatic dispersion filters, and taps initialization for an adaptive equalizer. The system contains hardware FFT and peak detector units that sense a pure tone that marks the beginning of a known, short data sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.