Mobile users want better video calls, streaming television and faster downloads, placing more demands on the limited radio spectrum available to operators. Could handsets that intelligently sense ...

The Radio Spectrum is defined as the band of frequencies from 3Hz to 3 000 GHz of the Electromagnetic Spectrum. Column A lists Band Names, Column B lists the ITU Band designation number and Column C ...

Cognitive radio networks (CRNs) represent an innovative paradigm in wireless communications that optimises the usage of the limited radio frequency spectrum. By enabling unlicensed secondary users to ...

One of the most hotly contested bits of real estate today is one you can't see. As we move into an increasingly wireless-connected world, staking out a piece of the crowded electromagnetic spectrum ...

Active sensing encompasses the use of a transmitter and at least one receiver to measure (sense) the transmission or scattering properties of a medium at radio frequencies. In transmission ...

Active remote sensing is the principal tool used to study and to predict short- and long-term changes in the environment of Earth - the atmosphere, the oceans and the land surfaces - as well as the ...

The U.S. military is moving an advanced radio-frequency mapping capability from the laboratory into the hands of warfighters. Developed by the Defense Advanced Research Projects Agency, the technology ...