Measurement system and method for measuring and analyzing modulated signals

A measurement system, in particular a signal analyzer or monitoring receiver, for measuring and analyzing modulated signals, comprising:

• a signal acquisition device having one or more input ports, wherein the signal acquisition device is configured to capture one or more modulated signals applied to the input ports, wherein each captured modulated signal can be represented as an I/Q signal;
• wherein the signal acquisition device is configured to generate at least two digital I/Q data streams based on the one or more modulated signals, wherein the at least two digital I/Q data streams are generated in parallel;
• a selection device configured to select at least one target frequency bandwidth in each of the at least two digital I/Q data streams;
• and
• a signal processing device configured to analyze the at least two digital I/Q data streams in the selected target frequency bandwidths,
• wherein the selection device is configured to further split at least one of the I/O data streams in the selected bandwidth into a plurality of sub-data streams.