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imretokyo
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re: WiMax stayed up in Japan quake, says Intel exec
imretokyo   4/3/2011 5:28:33 AM
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While you couldn't made calls, the 3g data service was running. I was able to talk with my wife via skype on her iphone, and via mobile Wimax router+ ipod touch on my side.

elctrnx_lyf
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re: WiMax stayed up in Japan quake, says Intel exec
elctrnx_lyf   3/18/2011 6:23:03 PM
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Is all the wimax links have the back bone network with the micro wave radios. It will be interesting to see how wimax is much better than the 3G and LTE to provide better connections during earthquake.

old account Frank Eory
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re: WiMax stayed up in Japan quake, says Intel exec
old account Frank Eory   3/17/2011 6:46:35 PM
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Yes, true. So the explanation might be as simple as which system lost electrical power to a smaller percentage of its base stations.

krisi
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re: WiMax stayed up in Japan quake, says Intel exec
krisi   3/17/2011 5:42:39 PM
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WiMax has longer reach than 3G...Kris

yalanand
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re: WiMax stayed up in Japan quake, says Intel exec
yalanand   3/17/2011 1:45:06 AM
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@Frank, I agree with you, why exactly WiMax fared better than the 3G networks ? If we get answer for this then we can compare those technologies better.

old account Frank Eory
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re: WiMax stayed up in Japan quake, says Intel exec
old account Frank Eory   3/16/2011 11:39:39 PM
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It would be valuable to know why the WiMAX network fared much better than the 3G network. Without that understanding, it is difficult to draw conclusions about the robustness of one vs. the other.

chanj0
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re: WiMax stayed up in Japan quake, says Intel exec
chanj0   3/16/2011 11:06:59 PM
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The backbone of any wireless system is underground optical fibers or copper wires. If an earthquake hits the wires, the wireless system goes down. If this particular incidents that the article is referring is using a mesh network, the wireless system will stay up as long as there is power. Any more information will definitely help to graph the rebostness of WiMax technology.



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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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