Determining the position of a constant frequency interval in a telecommunication signal
US6937672B1 · kind B1 · utility
6Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 29, 2000 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Feb 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/0035
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Noise-reduced signal values derived from at least a part of the constant frequency interval of a telecommunication signal for adapting a filter to the frequency of the constant frequency interval, and to determine the position of the constant frequency interval on the basic of the filtered output values. Employing this idea, a filter can be adapted to a wide range of possible frequencies, which means that the filtered output values will show marked differences when the constant frequency interval begins and/or ends. These differences can be used to detect the position accurately and reliably.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.