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  • noun

Synonyms for Cr

a hard brittle multivalent metallic element

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Studies on simulation of cognitive radio engine and networks have been reported in the literature.
The researchers considered the problem of rapid detection of a moving primary user in a cognitive radio network by employing multiple antennas at the cognitive receiver.
Cognitive radio possesses the ability to sense its environment in order to find out spectrum holes or opportunity at any time and location.
In some networks such as cognitive radio ad hoc networks [15] and cognitive radio cellular networks [16], CR users are mobile and they communicate with each other using small and flexible devices.
An important prerequisite for Cognitive Radio networks can be achieved is the ability of spectrum sensing.
We fully support the PCAST recommendations and welcome the opportunity to apply our xMax cognitive radio innovations to the capacity challenges our industry faces," said John Coleman, chief executive officer of xG.
Cognitive radio systems present a challenge to spectrum management during the frequency assignment process.
3-Teir Conceptual Model for Resource Management: Cognitive radio is an emerging technology used to solve the spectrum shortage problem by taking using opportunistic and dynamic access to spectrum (Haykin, 2005).
Cognitive Radio Working Group, centrado en la parte mas tecnologica, utiliza la siguiente definicion:
The interest of cognitive radio is limited when frequency bands are heavily used.
TELECOMWORLDWIRE-11 March 2002-InterDigital and Virginia Tech team for research into cognitive radio models (C)1994-2002 M2 COMMUNICATIONS LTD http://www.
The company also has several additional DSA and cognitive radio patents pending in the U.
in [13] adopted the radio environment map to management the interference in cognitive radio networks.
The vision of improving the spectrum utilization and alleviating the scarcity of spectrum resources by using cognitive radio technology has led to a great deal of research.
This report summarizes the concept of cognitive radio and why they are becoming a necessity.
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