decoration decoration
Stories

GROKLAW
When you want to know more...
decoration
For layout only
Home
Archives
Site Map
Search
About Groklaw
Awards
Legal Research
Timelines
ApplevSamsung
ApplevSamsung p.2
ArchiveExplorer
Autozone
Bilski
Cases
Cast: Lawyers
Comes v. MS
Contracts/Documents
Courts
DRM
Gordon v MS
GPL
Grokdoc
HTML How To
IPI v RH
IV v. Google
Legal Docs
Lodsys
MS Litigations
MSvB&N
News Picks
Novell v. MS
Novell-MS Deal
ODF/OOXML
OOXML Appeals
OraclevGoogle
Patents
ProjectMonterey
Psystar
Quote Database
Red Hat v SCO
Salus Book
SCEA v Hotz
SCO Appeals
SCO Bankruptcy
SCO Financials
SCO Overview
SCO v IBM
SCO v Novell
SCO:Soup2Nuts
SCOsource
Sean Daly
Software Patents
Switch to Linux
Transcripts
Unix Books

Gear

Groklaw Gear

Click here to send an email to the editor of this weblog.


You won't find me on Facebook


Donate

Donate Paypal


No Legal Advice

The information on Groklaw is not intended to constitute legal advice. While Mark is a lawyer and he has asked other lawyers and law students to contribute articles, all of these articles are offered to help educate, not to provide specific legal advice. They are not your lawyers.

Here's Groklaw's comments policy.


What's New

STORIES
No new stories

COMMENTS last 48 hrs
No new comments


Sponsors

Hosting:
hosted by ibiblio

On servers donated to ibiblio by AMD.

Webmaster
Earlier story on "radio vorticity" | 305 comments | Create New Account
Comments belong to whoever posts them. Please notify us of inappropriate comments.
Infinite-capacity ?
Authored by: Anonymous on Monday, June 25 2012 @ 05:34 PM EDT
Pray tell - how does a finite medium have infinite capacity?

[ Reply to This | Parent | # ]

Earlier story on "radio vorticity"
Authored by: hardmath on Monday, June 25 2012 @ 05:49 PM EDT

I recall the earlier story, basically a prototype/proof of concept. I suspect this was a formal write-up. A popularized account is here.

This online article was interesting in that the Comments included more than one response by Bo Thidé, a principal researcher who worked at implementation for four years. However all I could gather about the resulting capacity was that "4 channels" were demonstrated, with speculation that up to 11 channels would be "economically feasible".

The new announcement is given some historical perspective in this "newsy" IOP webpage. The experiments don't seem to be apple-to-apple comparisons since Thidé et al worked with "low-frequency" radio waves and Alan Willner's USC team is using laser pulses.

---
"Prolog is an efficient programming language because it is a very stupid theorem prover." -- Richard O'Keefe

[ Reply to This | Parent | # ]

Infinite-capacity wireless vortex beams carry 2.5 terabits per second
Authored by: JamesK on Monday, June 25 2012 @ 06:51 PM EDT
At the very least, wouldn't quantum mechanics put a limit on
"infinite"?

---
The following program contains immature subject matter. Viewer discretion is
advised.

[ Reply to This | Parent | # ]

Groklaw © Copyright 2003-2013 Pamela Jones.
All trademarks and copyrights on this page are owned by their respective owners.
Comments are owned by the individual posters.

PJ's articles are licensed under a Creative Commons License. ( Details )