Re: HOW DRM handles skywave propagation (digital radio mondiale)

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Article #689

#689

From: SFTVratings_troy
Date: Tue, 02 Oct 2007 11:26

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On Oct 1, 1:42 pm, Ratata <n...@mail.tanks> wrote:
>  SFTVratings_t...@yahoo.com 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 ??



Digital Radio Mondiale *is* IBOC.  (Like HD Radio, it sits right next-
door to the AM signal, widening the channel by a few more kilohertz)

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From:  SFTVratings_troy@yahoo.com
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Subject: Re: HOW DRM handles skywave propagation (digital radio mondiale)
Date: Tue, 02 Oct 2007 04:26:10 -0700
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