Method for searching for a useful signal in a multiplexing band
US9768897B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 2013 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Jan 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of searching for the presence of a useful signal of predefined spectral width ΔB in a multiplexing band having a spectral width greater than ΔB, includes calculating a frequency signal representative of a power spectral density in the multiplexing band, calculating a non-useful signal by filtering the frequency signal by means of a filter capable of suppressing all or part of signals having a spectral width equal to or smaller than ΔB, calculating a power ratio signal representative of the ratio of the frequency signal to the non-useful signal, and comparing the power ratio signal with a predefined threshold value. The method may be employed using a computer program product, a receiver unit, and/or a station of a digital telecommunications system comprising such a receiver unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.