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Cognitive Radio: Brain-Empowered Wireless Communications (2005)
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BibTeX
@MISC{Haykin05cognitiveradio:,
author = {Simon Haykin},
title = {Cognitive Radio: Brain-Empowered Wireless Communications},
year = {2005}
}
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Abstract
Cognitive radio is viewed as a novel approach for improving the utilization of a precious natural resource: the radio electromagnetic spectrum. The cognitive radio, built on a software-defined radio, is defined as an intelligent wireless communication system that is aware of its environment and uses the methodology of understanding-by-building to learn from the environment and adapt to statistical variations in the input stimuli, with two primary objectives in mind: • highly reliable communication whenever and wherever needed; • efficient utilization of the radio spectrum. Following the discussion of interference temperature as a new metric for the quantification and management of interference, the paper addresses three fundamental cognitive tasks. 1) Radio-scene analysis. 2) Channel-state estimation and predictive modeling. 3) Transmit-power control and dynamic spectrum management. This paper also discusses the emergent behavior of cognitive radio.
Keyphrases
cognitive radio brain-empowered wireless communication radio spectrum radio electromagnetic spectrum reliable communication whenever predictive modeling efficient utilization fundamental cognitive task dynamic spectrum management statistical variation radio-scene analysis channel-state estimation novel approach precious natural resource interference temperature software-defined radio input stimulus emergent behavior intelligent wireless communication system primary objective
