Device and method for adjusting loop filter gain in automatic frequency controller
US8706051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2007 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Oct 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J7/065
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Provided is a device and a method for adjusting a loop filter gain in an automatic frequency controller, which can allow the automatic frequency controller to operate while maintaining an optimal performance. The device includes a velocity estimator for estimating a change in velocity in accordance with a movement of a terminal; a loop filter gain controller for controlling a loop filter gain in accordance with a change in velocity received from the velocity estimator; and a loop filter gain unit for multiplying a loop filter gain received from the loop filter gain controller and a frequency error for output. Further, there is provided a method for adjusting a loop filter gain in an automatic frequency controller, having the steps of: estimating a change in velocity in accordance with a movement of a terminal; adjusting a loop filter gain in accordance with the estimated change in velocity; and multiplying the adjusted loop filter value and a frequency error for output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.