Back to results
US 2007/0177691 A1Published application
Device For Detecting A Frequency Offset
AssigneeInfineon Technologies AG
InventorThomas Ruprich
Life of this patent
Estimating the term…
Abstract
A device detects a frequency offset by a frequency converter (209) for converting a received signal into a sideband and comprises a calculating means (211) for calculating a characteristic quantity of the sideband which is a measure of the frequency offset.
Claims27
A device for detecting a frequency offset of an input signal comprising:
- a frequency converter for converting the received signal into a side band with a predetermined centre frequency in order to obtain a side band signal;
- a calculating means for calculating a quantity characteristic of the sideband signal from the sideband signal, the characteristic quantity being a measure of the frequency offset.
A receiver, comprising
- a device comprising a frequency converter for converting the received signal into a side band with a predetermined centre frequency in order to obtain a side band signal, and a calculating means for calculating a quantity characteristic of the sideband signal from the sideband signal, the characteristic quantity being a measure of the frequency offset;
- and
- a controlled oscillator wherein
- the calculating means is arranged for controlling the controlled oscillator in such a manner that the frequency offset is reduced.
1 more element
A method for detecting a frequency offset of an input signal, comprising the steps of:
- converting the received signal into a sideband with a predetermined centre frequency in order to obtain a sideband signal;
- and
- calculating a characteristic quantity of the sideband signal from the sideband signal wherein the characteristic quantity is a measure of the frequency offset.
A receiving method comprising the steps:
- determining a frequency offset by converting the received signal into a sideband with a predetermined centre frequency in order to obtain a sideband signal, and by calculating a characteristic quantity of the sideband signal from the sideband signal wherein the characteristic quantity is a measure of the frequency offset;
- and
- controlling a controlled oscillator on the basis of the frequency offset in order to reduce the frequency offset.
Dependencies are inferred from the claim text.