A system, apparatuses, a method, and a computer program for producing
signals for testing radio frequency communication devices are provided.
The system comprises a non-real-time domain which includes a data
generator for supplying a temporally discontinuous data stream which data
stream includes signal waveform data and control data defining
characteristics of a conversion from the signal waveform data into a
radio frequency test signal. The temporally discontinuous data stream is
fed into a transformer which transforms the temporally discontinuous data
stream into a temporally continuous data stream, thus providing a
transformation between the non-real-time domain and a real-time domain.
The real-time domain includes a radio frequency unit which uses the
temporally continuous signal data stream as input, and performs the
conversion from the signal waveform data into the radio frequency test
signal according to the control data.