Networks of tiny wireless sensors could not only improve safety at railway crossings but would also be much less costly to install and maintain, drawing their electrical power from track vibration. These are among the findings ...
Engineering
Aug 18, 2016
0
8
First responders often have trouble communicating with each other in emergencies. They may use different types of radios, or they may be working in rural areas lacking wireless coverage, or they may be deep inside large buildings ...
Telecom
Aug 10, 2016
0
7
Data traffic is growing worldwide. Glass-fiber cables transmit information over long distances at the speed of light. Once they have reached their destination, however, these optical signals have to be converted into electrical ...
Optics & Photonics
Aug 2, 2016
0
12
The wireless data transmission via mobile communication is reliable and affordable. However, data volume per user is rising exponentially. Causes are not only the continuously growing number of smartphones, but also trends ...
Electronics & Semiconductors
Aug 1, 2016
0
17
Verizon, which agreed Monday to acquire faded internet star Yahoo, grew from its roots as a regional telephone carrier to a top wireless company—with ambitions to be much more.
Business
Jul 25, 2016
0
5
Today's high-speed wired communication networks use lasers to carry information through optical fibers, but wireless networks are currently based on radio frequencies or microwaves. In an advance that could one day make light-based ...
Optics & Photonics
Jul 19, 2016
0
61
As the number of mobile devices grows along with demand for faster connections and larger data volumes, wireless networks can easily exceed capacity, resulting in severe network slowdowns and outages. While engineers have ...
Telecom
Jul 18, 2016
0
2
Researchers at The Australian National University (ANU) are a step closer to harvesting renewable or ambient energy from mobile phone base stations to power battery-operated wireless sensors used in industries including health ...
Engineering
Jul 13, 2016
1
20
PFL researchers have produced a tunable, graphene-based device that could significantly increase the speed and efficiency of wireless communication systems. Their system works at very high frequencies, delivering unprecedented ...
Nanomaterials
Jul 8, 2016
0
85
Wal-Mart will now let you pay with its phone app at all 4,600 stores nationwide.
Business
Jul 6, 2016
0
11
