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Re: 56 kbps modems
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.