A Cognitive Radio Prototype Operating in UHF TV Bands

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Executive Summary

The proliferation of wireless applications/devices has created a big demand for prime (i.e. with good propagation characteristics) Radio Frequency (RF) spectrum. Though most of this spectrum is allocated, the usage of this spectrum varies significantly with time and space. In order to increase the efficiency, one would require a device that continuously scans the radio environment for vacant spectrum and uses it for its communication needs. These new class of devices, referred to as Cognitive Radios (CRs), will efficiently use the spectrum while avoiding interference to the primary occupants of the spectrum.

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