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aefelgate
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re: Sprint wants engineers to consider M2M careers
aefelgate   11/9/2011 2:49:37 PM
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SMS is probably the most efficient method of transmitting information in M2M. SMS uses the more powerful control channel in the cellular connection. Most M2M information is small, bursty status updates or tiny control signals, such as "Arm" or "Disarm". Leveraging Twitter to deliver SMS messages to other machines that "Follow" each other is a simple way to enable autonomous M2M among machines.

SylvieBarak
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re: Sprint wants engineers to consider M2M careers
SylvieBarak   11/9/2011 1:41:23 AM
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yeah, we're talking about tiny, minute wireless chips, terry. Most don't even need 3G capability, it's possible in most cases to get away with 2G. Standardizing things could be a little difficult though as there is still the whole CDMA vs GSM technology split....

GREATTerry
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re: Sprint wants engineers to consider M2M careers
GREATTerry   11/9/2011 1:19:51 AM
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machines talking to each other is a very interesting idea. How about the standardization of the "talk" protocol? What kind of wireless technology is needed? I guess the technology must be very power efficient otherwise the electric bill will be a problem.

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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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