Dual stage carrier phase estimation in a coherent optical signal receiver
US8295713B2 · kind B2 · utility
12Cited by
6References
22Claims
0Family size
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Key dates
| Filing date | Mar 5, 2010 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Sep 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/223
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method implementing dual stage carrier phase estimation (CPE) in a coherent receiver for an optical fiber communication system. In the first stage, a feed-forward CPE is implemented to make an initial carrier phase estimation of a training sequence. The initial carrier phase estimation is coupled to the second stage which implements a decision-feedback CPE. After a training period, accurate bit decision for system traffic can be achieved using the decision-feedback CPE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.