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PhD student maps his apartment's wifi dead zones using physics equation
Posted on 8/28/14 at 2:43 am
Posted on 8/28/14 at 2:43 am
Ars Article
Helmhurts - His blog post explaining his work
Simulated maps of the WiFi signal in Jason Cole's two-bedroom apartment.
Helmhurts - His blog post explaining his work
quote:
A home's Wi-Fi dead zones are, to most of us, a problem solved with guesswork. Your laptop streams just fine in this corner of the bedroom, but not the adjacent one; this arm of the couch is great for uploading photos, but not the other one. You avoid these places, and where the Wi-Fi works becomes a factor in the wear patterns of your home. In an effort to better understand, and possibly eradicate, his Wi-Fi dead zones, one man took the hard way: he solved the Helmholtz equation.
Cole found in his simulation he could get pretty good coverage even with his router in one corner of the room, but could get "tendrils of Internet goodness" everywhere if he placed the router right in the center of the apartment. In a simulation where he gave the concrete some absorption potential, he found a map more like what he expected: excellent reception immediately around the router, and beams that shone into various rooms with periodic strong spots from the waves' interference.
Simulated maps of the WiFi signal in Jason Cole's two-bedroom apartment.
This post was edited on 8/28/14 at 2:52 am
Posted on 8/28/14 at 3:21 am to hikingfan
Holy shite, that's awesome.
Bookmarking that blog so I can read it later and see if I can even begin to make sense of it.
Bookmarking that blog so I can read it later and see if I can even begin to make sense of it.
Posted on 8/28/14 at 8:55 am to Tiger Ryno
So he used physics to figure out he'd get better coverage of his whole apt by placing the router in the middle?
Duh
Duh
Posted on 8/28/14 at 9:03 am to LordSnow
Its not that simple lol... If you have tons of walls or other barriers, or other things like TVs or microwaves, placing it in the middle of your apartment won't affect shite.
Posted on 8/28/14 at 12:01 pm to ILikeLSUToo
It is amazing to what lengths a PhD candidate will go to avoid working on the dissertation.
Posted on 8/28/14 at 12:42 pm to hikingfan
comments
i was just coming in here to point that out.
quote:
There is a small mistake in the translation from the 2D labeling system to the 1D system, it should be n = M(i-1) + j instead of (M-1)i + j. This way the mapping (N,M) -> NM actually works
i was just coming in here to point that out.
Posted on 8/28/14 at 2:28 pm to hikingfan
There's a simpler way... Trial and error
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