Device for generating a digitally modulated test signal

Details Device for generating a digitally modulated test signal Device for generating a digitally modulated test signal

2007-01-02

2007-01-02

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Testing

Reexamination Certificate

active

10148061

ABSTRACT:
The aim of the invention is to generate a digitally modulated test signal, which is generated in the form of a multitude of transmission channels from a digital modulation data stream according to a predetermined digital modulation standard, and which is fed as I and Q values to an I/Q modulator. To this end: a) a portion of the transmission channels is generated, in a modulation coder, directly from an internal or external modulation data stream according to the predetermined modulation standard; b) the I and Q values for at least one portion of the remaining channels are fed as a pre-calculated modulation data sequence of alimited length from a memory to the modulation coder, and; the I and Q values generated according to a) and b) are added and fed to the I/Q modulator.

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