Doppler estimation and compensation for wireless communication systems
US10454533B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2018 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Sep 18, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0026
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of estimating and compensating for Doppler frequency shifts includes providing an accurate reference device for generating an accurate reference frequency in a Doppler estimation and compensation (DEC) system, the DEC system being electrically connected to a user device. The DEC system receives one of a downlink signal from a base station and an uplink signal from the user device. The one of the downlink signal and the uplink signal is compared to the accurate reference frequency. An estimate of a Doppler frequency shift associated with the one of the downlink signal and the uplink signal is determined. An offset Doppler frequency shift of opposite sign as the Doppler frequency shift is added to the one of the downlink signal and uplink signal to provide a compensated signal. The compensated signal is transmitted to one of the base station and user device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.