Rohde and Schwarz Gmbh & Co. Kg

Jochen Pliquett

Hagen Eckert

Susanne Hirschmann

Annika Germer

Thomas Reichert

Joachim Eibl

The present invention relates to a data acquisition of measurement data together with further data specifying the operation during a measurement. For this purpose, I/Q measurement data are obtained and the steps for operating a measurement device during the measurement are monitored. A metadata package is generated, which includes the obtained I/Q measurement data along with the monitored steps of operating the measurement device.

Method and system for acquiring a measurement related dataset

A signal analysis method is described. The signal analysis method includes: receiving an input signal having unknown characteristic signal parameters; determining IQ data being associated with the input signal; determining at least one of the characteristic signal parameters based on the IQ data via an artificial intelligence circuit; and adapting at least one measurement parameter of a measurement instrument based on the at least one characteristic parameter by the artificial intelligence circuit. Moreover, a signal analysis circuit is described.

Signal analysis method and signal analysis module

A method and a device for determining a frequency mask disposed above or below a frequency spectrum of a detected signal determines every individual ordinate value of a first envelope curve disposed completely above or below the frequency spectrum as the maximum value or minimum value of a given number of respectively adjacent ordinate values of the frequency spectrum linked to a window function. Following this, each individual ordinate value of a second envelope curve disposed completely above or below the frequency spectrum and completely above or below the first envelope curve is determined as the maximum value or minimum value of a given number of respectively adjacent ordinate values of the frequency spectrum linked to a window function. Finally, a minimum number of ordinate values of the frequency mask from ordinate values of the first and/or second envelope curve disposed completely between the first and second envelope curve is determined, wherein in each case two successive ordinate values of the frequency mask with a maximum horizontal spacing distance within the first and second envelope curve can be reached in a linear manner relative to one another.

Method and device for determining a frequency mask for a frequency spectrum

A method for clock synchronisation between an amplitude-modulated or phase-modulated received signal (r(t)) and a transmitted signal (s(t)) estimates the timing offset (&#x3b5;) between the received signal (r(t)) and the transmitted signal (s(t)) by means of a maximum-likelihood method. The maximum-likelihood method in this context is realised by an estimation filtering (S; S) dependent upon the transmission characteristic, a subsequent nonlinear signal-processing function (S; S) and an averaging filtering (S, S; S, S). The received signal (r(t)) is especially a modified vestigial-sideband-modulated received signal (r'(t)). The nonlinear signal-processing function (S; S) maintains the alternating component in the spectrum of the pre-filtered vestigial-sideband-modulated received signal (v&#x2032;(t)).

Method and device for clock synchronisation with a vestigial-sideband-modulated transmitted signal

A method and a device for carrier-frequency synchronization of a vestigial-sideband-modulated received signal (r(t)) with a carrier signal (e), which is affected by a frequency offset and/or phase offset (&#x394;f, &#x394;&#x3c6;), estimates the frequency offset and/or phase offset (&#x394;f, &#x394;&#x3c6;) of the carrier signal (e) by means of a maximum-likelihood estimation. For this purpose, the vestigial-sideband-modulated received signal (r(t)) is converted into a modified vestigial-sideband-modulated received signal (x'(t&#x2032;)), which provides time-discrete complex rotating phasors (|x&#x2032;(t&#x2032;)|&#xb7;e), in which only the time-discrete phases (2&#x3c0;&#x394;ft&#x2032;+&#x394;&#x3c6;) are dependent upon the frequency offset and/or phase offset (&#x394;f, &#x394;&#x3c6;).

Method and device for carrier-frequency synchronization of a vestigial-sideband-modulated signal

The invention relates to a method and a measuring device for determining a characteristic curve of a high frequency transmitter for transmitting a high frequency signal modulated with a modulation signal. A high frequency signal transmitted by the high frequency transmitter is received by a receiving device () and samples of a complex value, real baseband signal (MEAS) are generated therefrom. By demodulation of the samples of the real baseband signal (MEAS), a modulation symbol sequence (SYM) is obtained, from which an ideal baseband signal (REF) is simulated as reference signal. The real baseband signal (MEAS) is corrected, a corrected, real baseband signal (MEAS') is generated and the deviations of the samples of the corrected, real baseband signal (MEAS&#x2032;) from the samples of the ideal baseband signal (REF) are evaluated.

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Munich, Germany

Jochen Pliquett