Slashdot Mirror
New Wireless Technologies
Codex The Sloth writes "The Economist has an article on 4 emerging wireless technologies: (1) Smart Antennas for improved base-station capacity, (2) Mesh Networks to make each wireless reciever also be a relay,
(3) Ad hoc networking to use network devices as routers, (4) Ultra wideband to transmit 100 mbs wirelessly (but only for distances of 10 feet...). Some of these are already in use while others are still in the lab."
Ultra wideband to transmit 100 mbs wirelessly (but only for distances of 10 feet...).
Also accomplished by tossing DVD's back and forth....what's the point of that? I mean, only ten feet? Why not just use a cable at that point?
What's your damage, Heather?
there are several good articles about uwb at UWBPlanet. It appears the Economist is quite wrong about UWB.
the little sticker you put on the back of your cell phone to increase range. Isn't that an emerging wireless technology???
Take the cheese to sickbay, the doctor should see it as soon as possible - B'Elanna Torres, "Learning Curve"
Me: Hey Joe, got that file?
:)
Joe: Yeah, it's on a floppy.
Me: Toss it here.
Joe: Frisbee's the Floppy across the room (20 ft. [6.1 meters]).
Me: Catches floppy (Sure it was aimed at my head).
Me: Thanks.
Joe: Make sure it gets to Mike tomorrow.
Me: Ok. (uses sneaker net)
Look familiar?
If we don't fight for ourselves no one will.
Right. It would be a real bummer if the master computer sent an order to kill those pesky humans and the robot got snapped back by the network cable. I mean how embarrassing.
-- Thou hast strayed far from the path of the Avatar.
Great question. It turns out that ad hoc network capacity is limited; in a randomly moving network, with sane discovery procedures, bandwidth per user goes down at some suprising rate. However, if your communications are local, that isn't a big deal. Also, several research groups have looked into cluster-based routing as a way to make things scale better, so only cluster-heads need to route amongst themselves, and the other nodes just go through the cluster heads.
I suppose gnutella could also benefit from such an architecture... I seem to recall that some P2P systems have "supernodes." However, the attractiveness of p2p systems is that they're really hard to shut down; 0wning all the supernodes would hurt. (Not shutting them down, just making them stop forwarding requests) Also, if one of these evil companies that advertise using P2P becomes a supernode, there's no end to the evil that company can perpetrate.
This is all a vast oversimplification, of course...
From Slashdot: 4) Ultra wideband to transmit 100 mbs wirelessly (but only for distances of 10 feet...).
From the article: The FCC ruling limits the range of UWB transmissions to about ten metres, although longer ranges may be allowed in future once the question of interference has been sorted out. However, UWB is capable of a data rate of at least 100 megabits per second over such distances.
The first thing, the Slashdot post makes it sound like 10 ft is the maximum UWB can go, and second, its 10 METERS not 10 FEET
In college, really poor, need a flatscreen.