Receiver and method for calibrating frequency offset
US10673664B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2019 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Oct 10, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/0014
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A receiver comprises an I/Q demodulator generates an angular signal by demodulating an in-phase branch and a quadrature branch of a received signal; a filter communicatively coupled to the I/Q demodulator and configured to generate a filtered angular signal by filtering out a noise signal having a frequency higher than a predetermined frequency value from the angular signal; an angle subtractor communicatively coupled to the filter and configured to generate a phase signal based on the filtered angular signal; a phase calibrator communicatively coupled to the angle subtractor and configured to generate a calibrated phase signal based on at least one received preamble signal corresponding to the phase signal and a known value of the at least one received preamble signal corresponding to the phase signal; and a symbol decider communicatively coupled to the phase calibrator and configured to generate an output symbol based on the calibrated phase signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.