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Volarchico
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re: ESC keynoter Kaku beams audience back to the future
Volarchico   5/10/2010 9:32:32 PM
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I like Kaku-san when he's doing hard science (e.g. take his book on QFT for a spin) I'm not fond of this side of him who seems to lean towards comic-book style technical predictions for the sake of popularity, kind of like a 21st century Sagan. I've been pretty disappointed in his TV appearances as well. But then again, perhaps the masses enjoy this sort of stuff. Predictions are fine, but from a scientist's perspective, let's see a little meat behind it, please.

dirk.bruere
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re: ESC keynoter Kaku beams audience back to the future
dirk.bruere   5/9/2010 8:05:17 PM
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BS on several counts. Moore's Law might halt if it stays with silicon, but it looks like continuing with graphene and memristors. As for the bandwidth required to teleport even a cat, we're talking high power gamma ray beams of spectacular destructive power.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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