= 27d567bc2d48d9f40e9ccc20ea370b15)
see comments on [LINK] An amazing breakthrough in wireless communication, or a pipe dream? - Less Wrong
You are viewing a comment permalink. View the original post to see all comments and the full post content.
= 783df68a0f980790206b9ea87794c5b6)
Loading…= b715d02e85f7b3b4ae65ca3d3e450868)
Subscribe to RSS Feed
Powered by Reddit
= f037147d6e6c911a85753b9abdedda8d)
You are viewing a comment permalink. View the original post to see all comments and the full post content.
Comments (21)
Neither; just a subset of existing MIMO technology.. And MIMO is already part of standards like 802.11n.
Yes. The orbital angular momenta spans the same space as the linear momenta, so it cannot add anything in principle to MIMO and similar. (Practical issues can of course in some cases make the one or the other basis more effective under various circumstances.)
... nm
Not correct! Linear momentum and angular momentum are entirely different things. This was shown by Euler already 1776. Any good mechanics book will show why. Read the books by Clifford Truesdell to get all the details right.
Not correct. MIMO is essentially a radio transmitter/antenna combination trick; angular momentum is a fundamental property of all fields and matter. Angular momentum comes in two distinct forms, spin angular momentum (like the Earth spinning around its own axis one revolution per day) and orbital angular momentum (like the Earth orbiting the Sun one revolution per year). All vector fields, including the EM field, has this property,
Well, then, rather than tell me I'm wrong in a forum where that will have no effect, go submit a paper to the IEEE refuting the paper they published by Ove Edfors and Anders J Johansson, which I linked.