Cognitive radios have become a key research area in communications over the past few
years. Automatic modulation classification (AMC) is an important component that improves …

More than a dozen Wireless@ Virginia Tech faculty are working to address the broad
research agenda of cognitive radio and cognitive networks. Our core research team spans …

Most existing work on dynamic spectrum access deals with creating a spectral and temporal
map of spectrum white space, and then filling it. The spectrum can be better utilized by …

It is known that the reliability of spectrum sensing in cognitive radio systems has the potential
to improve when this critical process is performed distributively by multiple radios. In …

Experimental research on networks of cognitive radios has been hindered by the lack of
open, affordable cognitive radios and associated software that are capable of operating with …

With the development of wireless communication technology, offering wideband access for
the rural and remote area has become an urgent demand of the market. IEEE 802.22 …

Higher order statistical features have been recently proved to be very efficient in the
classification of wideband communications and radar signals with great accuracy. On the …

To network cognitive radios that require spectrum sensing to identify transmission
opportunities emerges as a critical technology to facilitate spectrum efficient wireless …

Current US military pursuits, such as the Joint Tactical Radio System (JTRS), are based on a
software-defined radio (SDR) system. These kinds of systems use the flexibility of software to …

The objective of the FARAMIR project is to research and develop techniques for increasing
the radio environmental and spectral awareness of future wireless systems. Radio …