DRM – Digital Radio Mondiale - Digital Video and Audio Broadcasting Technology - page 522

The lowest possible data rate (CR=0.5, 16QAM, Mode B, 4.5 kHz) 4.8
kbit/s. The highest possible data rate (CR=0.78, 64QAM, Mode A, 20
kHz) is 72 kbit/s.
30.7 DRM transmitting stations and DRM receivers
Numerous transmitting stations throughout the world have already been
converted from AM to DRM. Relevant information is available from the
Internet. Apart from software-based DRM receivers, compact receivers are
also available now. Software-based solutions are in most cases based on a
DRM signal down-converted at 13 kHz which is fed into the line-in socket
of a PC. A suitable example which can be mentioned is the DREAM soft-
ware from the Technical University of Darmstadt (see also Fig. 30.5.).
Fig. 30.5. Constellation diagram of a DRM signal (MSC, FAC and SDC superim-
posed), recorded using the DREAM software
Bibliography: [ETS101980], [DREAM]