'Twisted' Waves Could Boost Capacity of Wireless Spectrum

New submitter Ogi_UnixNut writes "In Venice, Italy, physicists have shown that it is possible to use two beams of incoherent radio waves, transmitted on the same frequency but encoded in two different orbital angular momentum states, to simultaneously transmit two independent radio channels. In principle this allows the implementation of an infinite number of channels in a given, fixed bandwidth, even without using polarization, multiport or dense coding techniques. It's potentially a boon for congested spectrum problems, although at the moment I suspect it would only work for directional links."

Re:Shannon-Hartley still in effect.

[mehrotra.akash]

Does an infinite no. of channels with infinitely low capacity give infinite effective bandwidth?

Re:Shannon-Hartley still in effect.

[Idbar]

I think AT&T is fine with that. ;-)

Re:Multipath

[Forty Two Tenfold]

Leeloo Dallas multipath!