At 08:25 AM 2/1/2007, Peter St. John wrote:
Moore's Law (which has grown in scope since Moore) applies to the
aggregate effect of many technologies. Individual techs proceed in
fits and starts. Predictions about FLOPS/dollar seem to be
sustainable, but e.g. I predict a jump in chip density when the
price point of vapor deposition manufactured diamond gets low enough
(diamond conducts heat way better than silicon, and chips are
suffering from thermodynamics limits).
When AT&T divested, you could not get a decent telephone anymore;
they were too expensive to make so well. Then after years of crummy
phones, suddenly everyone had a cell-phone just like Captain Kirk's.
Sure I want fiber optics to my house. But maybe the power company
will carry data on the wasted bandwidth of power lines.
What wasted bandwidth on power lines? Wires of random composition
and topology, some over 100 years old, strung hither and yon, above
and below ground doesn't sound like a particularly good propagation
medium for wideband signals. Sure, signal processing and adaptive
processing can do some good, but it's still a shared medium (i.e.
that same power line that serves you also serves 8 of your
neighbors). Twisted pairs of wires, coaxial cable, optical
waveguides.. that's a consistent broadband propagation medium.
Data over powerlines might be useful for time of use electricity
metering, etc...
Jim, W6RMK
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