Method for compressing IQ measurement data
AssigneeRohde & Schwarz GmbH & Co. KG
InventorLuke Cirillo
Life of this patent
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Abstract
A method for compressing IQ measurement data obtained from a signal is described. Within the IQ measurement data, at least one block of IQ data is determined where redundancy of the respective data can be exploited. The IQ data of the at least one block is transformed into a transform domain where redundancy of the respective data can be exploited. Transform coefficients obtained in the transform domain are determined and assessed with regard to a pre-defined criteria so as to determine whether the transform coefficients comprise significant information. Only the IQ data assigned to transform coefficients having significant information is stored along with indices in the transform domain indicating where the respective transform coefficients occur in the transform domain.
Claims16
A method for compressing IQ measurement data obtained from a signal, comprising:
- determining, within the IQ measurement data, at least one block of IQ data where redundancy of the respective data can be exploited;
- transforming the IQ data of the at least one block into a transform domain where redundancy of the respective data can be exploited, wherein the transform domain depends on the type of signal processed;
- determining transform coefficients obtained in the transform domain and assessing the transform coefficients with regard to a pre-defined criteria so as to determine whether the transform coefficients comprise significant information;
- and
- storing only the IQ data assigned to transform coefficients having significant information along with indices in the transform domain indicating where the respective transform coefficients occur in the transform domain.
A method for compressing IQ measurement data obtained from a signal, comprising:
- determining, within the IQ measurement data, at least one block of IQ data where redundancy of the respective data can be exploited;
- transforming the IQ data of the at least one block into a transform domain where redundancy of the respective data can be exploited;
- determining transform coefficients obtained in the transform domain and assessing the transform coefficients with regard to a pre-defined criteria so as to determine whether the transform coefficients comprise significant information;
- and
- storing only the IQ data assigned to transform coefficients having significant information along with indices in the transform domain indicating where the respective transform coefficients occur in the transform domain,
- wherein, for all transform coefficients not-retained, an average power value is calculated and stored along with the respective transform coefficients.
A method for compressing IQ measurement data obtained from a signal, comprising:
- determining, within the IQ measurement data, at least one block of IQ data where redundancy of the respective data can be exploited;
- transforming the IQ data of the at least one block into a transform domain where redundancy of the respective data can be exploited;
- determining transform coefficients obtained in the transform domain and assessing the transform coefficients with regard to a pre-defined criteria so as to determine whether the transform coefficients comprise significant information, the significant information relating to a power or at least a parameter corresponding to the power such that the transform coefficients are assessed whether or not they have a certain power level being pre-defined as being a significant one, the pre-defined criteria corresponding to a threshold value with regard to the power;
- and
- storing only the IQ data assigned to transform coefficients having significant information along with indices in the transform domain indicating where the respective transform coefficients occur in the transform domain.
Dependencies are inferred from the claim text.