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Record-Speed Last-Mile Wireless Data Bridge Demonstrated

Last response: in News comments
March 1, 2012 10:52:04 AM

They could use directional antennas.
March 1, 2012 11:39:54 AM

"Koenig said that wireless technology is an "inexpensive, flexible, and easy-to-implement solution" for the last mile problem."

Elsewhere, in an ISP company...

"We have a monopoly over this area! Why should we invest in our infrastructure and not in more yachts?!"
March 1, 2012 12:29:20 PM

This tech will most likely be using directional antennas. You can get a 802.11g signal to go 2km+ using a pringles can and some sort of sighting system. It's very sensitive to getting both ends pointed directly at each other, but otherwise a great way to defeat the inverse square law.
March 1, 2012 1:54:46 PM

220ghz = 18.6gb/s @ 50cm ?

what will the ghz have to be to keep that speed over the distance of 20km? Were gonna be talking terahertz range arent we?
March 1, 2012 2:30:04 PM

As a last-mile link it will probably be omni-directional. The high frequency will limit reception to line-of-sight. The paper indicated 1km is feasible with attenuation from heavy rain.

But I don't see it as really helpful for last-mile connections. If you're going to pull fiber, there is little reason to not go the final mile unless there is some major building structural problems that prevent it.

However, this would make a great WiFi replacement.
March 1, 2012 2:49:18 PM

220 GHz? that's insane microwave frequencies which could work at 20km a vacuum!
As posted above, 1km could be possible accounting rain and other factors.
March 1, 2012 5:46:40 PM

rofl will we boil our brains while we pass near it i guess? On another news new microwave tank built at USA :p  (Command and conquer style lol)
March 1, 2012 6:17:21 PM

shin0bi272220ghz = 18.6gb/s @ 50cm ? what will the ghz have to be to keep that speed over the distance of 20km? Were gonna be talking terahertz range arent we?

You need to look at the other direction for Hz and Range.

The lower the Hz, the farther it can go farther on the same power (or at least isn't hampered with objects as bad).

Higher Hz = shorter range and is blocked by objects far more easily.

Best way to view this is either try a 2.4/5 Ghz router or drive as far as you can on your favorite FM and AM radio stations.

The only reason why i could see them using 220Ghz (besides what the FCC will allow) is that what is needed to push that kind of bandwidth (High Hz = more bandwidth for data)
March 1, 2012 9:24:03 PM

This could really improve competition in the ISP field. It is much easier to lease a small piece of someone's roof than it is to get permits to dig up every street in a 1km radius to lay your own coax/telephone/fiber lines.