Thread: HOW DRM handles skywave propagation (digital radio mondiale)
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Old October 1st 07, 07:42 PM posted to rec.audio.tech,rec.audio.car,rec.radio.shortwave,ba.broadcast
Ratata Ratata is offline
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First recorded activity by RadioBanter: May 2007
Posts: 19
Default HOW DRM handles skywave propagation (digital radio mondiale)
wrote:


"To counter the effects of Doppler shift and Doppler spread the
frequency separation between the OFDM carriers in the DRM signal is
progressively increased (e.g. the carrier spacing in Mode D is more
than 2.5 times that in Mode A). This ensures that the frequency
spread experienced is kept to a sufficiently small fraction of the
carrier spacing to allow correct demodulation."

better than IBOC ??


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