Pre-equalization using phase correction
US9479252B2 · kind B2 · utility
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3References
16Claims
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Key dates
| Filing date | May 9, 2014 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | May 9, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/63
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical transmitter determines the transfer function in the reference-based pre-equalization for applying to an optically modulated signal at the transmitter. The determined pre-equalization transfer function is made robust to linewidth inaccuracy of the optical source by performing phase correction during the calculation of the pre-equalization transfer function. The phase correction includes averaging a number of consecutive received phase samples. The determined pre-equalization transfer function is applied to modulated signals prior to the transmission over an optical medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.