Kim Holburn kim at holburn.net
Tue Apr 7 16:46:16 AEST 2009

A fibre can handle the visible spectrum and more, probably IR and UV,  
unshared, no cross-talk, dedicated, point to point and with  
effectively little attenuation over distance compared with wireless.    
Frequencies of around say 10^12 to 10^16.   At those frequencies an  
immense amount of potential bandwidth.

There's no way shared wireless can do anything like that.  The higher  
the frequency of shared wireless, the shorter the distances involved,  
the more cells you need ie the more infrastructure.  Even then you can  
get dead spots, contention etc.  There is no guaranteed bandwidth.   
Still good for bridging the gap and mobile internet use like googling  
and music while driving and things like that.

On 2009/Apr/07, at 4:23 AM, George Bray wrote:

> On Tue, Apr 7, 2009 at 11:44 AM, Tom Worthington
> <Tom.Worthington at tomw.net.au> wrote:
>> However, developments with broadband technology,
>> particularly wireless broadband, may make the
>> system obsolete before it is built.
> I don't buy this.  Technological progress is occurring in both
> wireless and fibre realms.  And I would venture to suggest that
> progress in expanding the capacity of glass will yield greater results
> over time, i.e. a greater quantity of uncontended higher bandwidth
> sessions over the specified media.
> -- 
> George Bray, The Australian National University, Canberra, Australia.
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Kim Holburn
IT Network & Security Consultant
Ph: +39 06 855 4294  M: +39 3494957443
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