Apparatus and methods for estimating optical Ethernet data sequences
US9363110B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2013 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Jan 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03057
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A receiver is disclosed that includes a slicer having an input to receive a sequence of symbols exhibiting inter-symbol-interference (ISI). The slicer determines a state associated with each symbol based on a threshold. A feedback equalization unit is coupled to the slicer to apply equalization to the symbol fed to the slicer input based on prior detected symbol states. A Least-Mean-Square (LMS) unit cooperates with the slicer and feedback equalization unit to estimate a channel impulse response based on the equalized symbols. The LMS unit feeds the estimated channel impulse response to a Maximum-Likelihood-Sequence-Estimation (MLSE) unit to generate an estimated sequence of bits based on the estimated channel impulse response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.