infoneer-pulse:

Wireless spectrum is a finite natural resource, and all it takes is a look at recent deals like Verizon’s $3.6 billion and AT&T’s $1.9 billion purchases to see that it’s in high demand. Since we can’t make more spectrum, all we can do is use it more effectively, and researcher Fabrizio Tamburini and his team think they know just how to do it. They say that by twisting radio waves we’ll be able to send multiple discrete signals over the same frequency, giving us, in theory, “an infinite number of channels in a given, fixed bandwidth.” The technique uses a modified transmitting dish that’s shaped like a portion of a corkscrew to send out signals called radio vortices with different orbital angular momentmum states (i.e. degrees of spin), each carrying different sets of data. » via The Verge