Dynamic frequency correction in delta-sigma based software defined receiver
US10404293B2 · kind B2 · utility
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1Claims
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Key dates
| Filing date | Jul 11, 2017 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Jul 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for dynamically modifying filter characteristics of a Delta-Sigma modulator to accommodate for Doppler shift. A transceiver in a wireless cellular communication system for adapt to changes in the RF carrier frequency for maintaining signal integrity by applying a pilot tone in calibration to determine a frequency shift response for a bandpass filter. During operation, the system is operative to determine a Doppler shift and to shift the bandpass filter in response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.