Systems and methods to mitigate electro-magnetic interference in single twisted-pair-based communication systems
US9838072B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2016 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | May 25, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transceiver to communicate in a vehicle via a single twisted-pair Ethernet cable includes a transmitter to transmit signals via the single twisted-pair Ethernet cable and a receiver to receive signals via the single twisted-pair Ethernet cable. The transceiver includes an equalizer, a signal-to-noise ratio estimator, and a controller. The equalizer includes a notch filter and a slicer. The equalizer receives an input signal received by the transceiver via the single twisted-pair Ethernet cable. The notch filter cancels electromagnetic interference from the input signal and to output a filtered signal. The slicer slices the filtered signal. The signal-to-noise ratio estimator estimates a signal-to-noise ratio based on an output of the slicer. The controller controls a rate of adapting the equalizer by controlling a rate of change of tap values of the notch filter based on the signal-to-noise ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.