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Code Monkey
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re: 6-axis MEMS improves e-compasses
Code Monkey   4/21/2011 9:36:17 PM
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Hopefully the e-compass becomes a standard feature on smart phones. Navigation apps are much more friendly if they rotate the map to match the device's orientation. For that you need a compass.

DrQuine
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re: 6-axis MEMS improves e-compasses
DrQuine   4/21/2011 5:50:48 PM
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e-compasses face an interesting technical issue - they are typically a "nice to have" feature of a device. The user is not willing to accept a big hit in performance for the added functionality provided. This presents a particular engineering challenge to the designers to minimize the size and power requirements. If they are successful, the added capabilities make it possible to delight the user - as the iPhone often does.



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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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