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Taichichuan
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Re: EE Times Week in Review Online Chat: Nightmare Looms for Internet of Things (Friday 8/16/2013)
Taichichuan   8/16/2013 1:33:07 PM
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As to IPv4 vs IPv6, even the Zigbee folks are bowing to the inevitable.  Zigbee IP uses 6LoWPAN which is a compressed IPv6 address space.  The issue is not that IPv4 will go away any time soon, the issue is that v6 will happen regardless of our ability to ignore it.  We surpassed 4 Billion devices on the Internet in 2009.  There are expected to be 15 billion on the Internet by 2015 and 50 billion by 2020.  NAT and CIDR only go so far.  Eventually, we'll all have to adapt.



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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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