News tagged with radio signal

Wi-Fi signals can see through walls

(PhysOrg.com) -- Researchers at the University of Utah, USA, have discovered that variations in signal strengths in wireless networks can be used to "see" movements of people on the other side of walls or ...

Oct 05, 2009 4.3 / 5 (8) 2 weblog

Hurricane Katrina: Phone home

Though New Orleans residents were told to evacuate days before the arrival of Hurricane Katrina, no one could have predicted the real extent of the devastation.

Jul 06, 2009 not rated yet 0

Breakthrough for post-4G communications

(PhysOrg.com) -- With much of the mobile world yet to migrate to 3G mobile communications, let alone 4G, European researchers are already working on a new technology able to deliver data wirelessly up to 12.5Gb/s.

Mar 05, 2009 3 / 5 (1) 0