An existing ns-2 network simulator was extended to support
cognitive radio network simulation in [10].
Li's work promises to significantly advance spectrum sensing for
cognitive radio in vehicular applications.
Eighteen parameters have been identified which have critical influence on the QoS of a
cognitive radio network.
Several secondary users are randomly distributed in the
cognitive radio network.
Alghamdi [6] proposed a new method to optimize the overall performance in hard cooperative spectrum sensing in
cognitive radio networks.
The adoption of
cognitive radio technologies, like xMax, could lead to a dramatic increase in spectrum efficiency, which would help ensure that consumer, commercial and government users of wireless systems will maintain unobstructed wireless connectivity in the face of skyrocketing demand.
Spectrum management business processes will harness these two forces to put
cognitive radio systems and software defined radios into the hands of warfighters.
CH being itself a
cognitive radio also sense spectrum and then combine the overall information in a way to obtain the list of legitimate available frequency holes (Coile, 1997).
Por su parte, el SDR Forum Special Interest Group for
Cognitive Radio, el cual se centra en el desarrollo de aplicaciones para
Cognitive Radio, lo define como:
Where spectrum is used on an exclusive basis, parties could negotiate ways to access frequencies any time a
cognitive radio technology (deployed, for instance, in the radio systems of the lessee) senses white spaces available for transmissions.
Under the terms of the agreement InterDigital will sponsor and help guide research on
cognitive radio models for wireless systems.
These two new patents, along with the existing eight patents we have already received for spectrum sharing,
cognitive radio and interference mitigation technology, reinforce our leadership position in helping the wireless industry as it addresses the mounting spectrum crunch's future impact on consumers and business," said Thomas Stroup, SSC's CEO.
