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Pho99
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Re: How Far Will You Go?
Pho99   7/1/2013 6:33:02 AM
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Famous last words -- it's secure

patrick.mannion
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Re: How Far Will You Go?
patrick.mannion   7/1/2013 12:04:15 AM
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I'm curious as to what this mysterious LoRa modulation scheme looks like. Apparently it uses spread spectrum techniques, which sounds good, as it's secure and highly immune to interference, but has anyone really evaluated it yet? How does the modulation scheme work?

DrFPGA
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How Far Will You Go?
DrFPGA   6/29/2013 6:44:46 PM
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15km. That's a long way. With 100nA sleep current battery deployment seems very doable. Hopefully it can wake on reception.

These characteristcs do seem like a very good fit for a variety of applications. Smart sensors are just the first that come to mind. If we can get GPS added too I'm all set...



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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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