Method and device for processing signals
AssigneeH-Next GmbH
InventorOliver HEID
Life of this patent
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Abstract
A signal processing system includes a signal supply device which is configured to output an analytically complex, bandwidth-limited signal, and a signal processing device which includes a frequency setting device and an interpolation device. The frequency setting device is configured to specify a reference frequency lying within the bandwidth of the analytical signal. The reference frequency determines a constant reference phase advance per unit distance of successive sample values, or data point values, of the analytical signal. The interpolation device is configured to generate at least one value which interpolates the data point values at a specified location.
Claims15
A method for processing signals, comprising the following steps:
- providing an analytically complex, bandwidth-limited signal,
- specifying a reference frequency within a bandwidth of the signal,
- detecting data point values yk of the signal, wherein a distance between successive data point values is given by a constant reference phase advance predetermined by the reference frequency,
- generating at least one interpolation value y(x) at a predetermined point between k successive reference point values yk according to the general formula:
- y
-
- (
- x
- )
- =
- z
- 0
- x
-
- ∑
- k
- w
-
- (
- x
- -
- k
- )
-
- z
- 0
- -
- k
-
- y
- k
- with z0=e1ω0τ as a unit rotator and w as a weighting factor, wherein τ is a sampling step size.
A signal processing system, with a signal supply device which is configured to output an analytically complex, bandwidth-limited signal, and with a signal processing device which comprises a frequency setting device and an interpolation device, wherein the frequency setting device is configured to specify a reference frequency lying within a bandwidth of the analytical signal, which reference frequency determines a constant reference phase advance per unit distance of successive sample values, comprising data point values, of the analytical signal, and the interpolation device using the general formula:
- y
-
- (
- x
- )
- =
- z
- 0
- x
-
- ∑
- k
- w
-
- (
- x
- -
- k
- )
-
- z
- 0
- -
- k
-
- y
- k
- is configured to generate at least one value that interpolates the data point values at a predetermined location, wherein z0=e1ω0τ denotes a standard rotator, w denotes a weighting factor, and τ denotes a sampling step size.
Dependencies are inferred from the claim text.