In 5G-based cognitive radio, the primary user signal is more active due to the broad
frequency band. The traditional cooperative spectrum sensing only detects one …

The IEEE 802.22 wireless regional area network (WRAN) is the first worldwide commercial
application of cognitive radio (CR) networks refarming the TV broadcast bands. According to …

(56) References Cited application that it needs to transmit data a particular rate. The
transmitter determines the minimum number of subchannels U_S_ PATENT DOCUMENTS …

Publisher Summary This chapter discusses the motivation and the important role of network
support in cognitive radios. It introduces the radio environment map (REM) and explains …

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 …

This paper introduces interference cartography, a simple and effective concept that helps
detect, identify and use spectrum opportunities in a secondary spectrum usage context …

This paper presents an innovative and generic approach to developing cognitive radios
(CR) based on the radio environment map (REM). REM is envisioned as an integrated …

Radio spectrum is not efficiently used, mainly due to the prevailing rigid frequency allocation
policy. Only some bands of the spectrum-such as those bands used by cellular base stations …

Cognitive radio is a candidate technology for more efficient spectrum utilization systems
based on opportunistic spectrum sharing. Because this new technology does not rely on …

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 …