[65411] in Cypherpunks
Re: 56 kbps modems
daemon@ATHENA.MIT.EDU (William Ehrendreich)
Fri Sep 13 20:40:18 1996
From: "William Ehrendreich" <bille@metro.net>
To: "Enzo Michelangeli" <enzo@ima.com>, "Asgaard" <asgaard@Cor.sos.sll.se>
Cc: <cypherpunks@toad.com>
Date: Fri, 13 Sep 1996 19:20:50 -0500
Yeah... and besides that ... if your local telco has lifted your load coils
then you have a much better chance!
----------
> From: Enzo Michelangeli <enzo@ima.com>
> To: Asgaard <asgaard@Cor.sos.sll.se>
> Cc: cypherpunks@toad.com
> Subject: Re: 56 kbps modems
> Date: Friday, September 13, 1996 10:24 AM
>
> On Fri, 13 Sep 1996, Asgaard wrote:
>
> > >U.S. Robotics and Rockwell International are planning new modems with
> > >speeds up to 56 kbps a second, almost double the speed of the fastest
> > >rate now available. The new devices should be available by the end of
> > >the year, although their top speed initially may be less than 56 kbps.
> > >(Wall Street Journal 12 Sep 96 B11)
> >
> > People who seemed to know used to say that 'the Shannon limit'
> > set an absolute upper limit around 40 kbps. Has Shannon been
> > proven wrong, or what?
>
> Well, it all depends on the signal-to-noise ratio. Also, if the noise is
> not white gaussian the situation can be even better.
>
> Enzo
>
