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old account Frank Eory
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re: London Calling: Cell phone carriers pile in to M2M
old account Frank Eory   5/7/2013 9:55:02 PM
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In the article you referenced, the author distinguishes M2M from IoT largely on the basis of the types of networks they connect to -- cellular for M2M vs. something new for IoT. In that sense, both articles seem to be saying much the same thing -- that the cellular networks are not optimal, either technically or economically, for the billions of "things" that will be communicating with each other, without human involvement, in the coming years.

przemek0
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re: London Calling: Cell phone carriers pile in to M2M
przemek0   5/6/2013 3:35:58 PM
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Funny that the same issue has an article on how M2M is giving way to IoT: http://www.eetimes.com/design/communications-design/4413286/M2M-is-DEAD-Long-Live-IoT?cid=Newsletter+-+EETimes+Daily Now, IoT does split the whole thing into 'dumb pipe' and some value-added services, where telecom companies have to compete on even terms with everyone else---and telecom companies don't have the best track record in this area. As a random example, Verizon has an app, MyVerizon, that is supposed to be a service portal for their cellular customers. The app is atrocious and is universally panned by users.



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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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