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Take Corrigendum Cor1 D5,page 104:
"This value is set as follows: for channel bandwidths that are a multiple of 1.75MHz then n=8/7 else for channel bandwidths that are a multiple of any of 1.25, 1.5, 2 or 2.75 MHz then n=28/25 else for channel bandwidths not otherwise specified then n=8/7."
If you take n=28/25 you will have 5.6 and 1.4 MHz for the sampling frequency with the relation of 4 as you expect.
Kind Regards
Juergen Otterbach
> -----Ursprüngliche Nachricht-----
> Von: Christan Kark [mailto:christian.kark@SE.FLEXTRONICS.COM]
> Gesendet am: Mittwoch, 9. November 2005 15:29
> An: STDS-802-16-MOBILE@listserv.ieee.org
> Betreff: [STDS-802-16-MOBILE] Sampling frequencies for different BW
>
> Hi!
>
> I have a question on the sampling frequencies for the different
> bandwidths. Let me state an example to explain.
>
> The 1,25 MHz BW and n=8/7 gives fs=1.424 MHz
> The 5 MHz BW and n=8/7 gives fs=5.7120 MHz
>
> There is a 4 times factor between the BW but between the fs
> the factor
> is not exactly 4 but almost. This is because of the FLOOR function in
> the fs calculation. How is this meant to be treated? The ADC/DACs must
> work on muliples on the fs.
>
> What's the thought of this?
>
>
> Best regards
>
> /Christian Kark
>