• Corpus ID: 15291398

A Survey of Cognitive Radio Systems

@inproceedings{Tabakovi2010ASO,
  title={A Survey of Cognitive Radio Systems},
  author={Željko Tabakovi},
  year={2010}
}
A fundamental problem facing the future wireless systems is where to find suitable spectrum bands to meet the demand of future services. While essentially all of the radio spectrum is allocated to different services, applications and users, observation provide evidence that usage of the spectrum is actually quite low. In order to overcome this problem and improve spectrum utilization, cognitive radio concept has been proposed. This paper provides an overview of cognitive radio for opportunistic… 
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References

SHOWING 1-10 OF 38 REFERENCES
A motivating overview of cognitive radio: Foundations, regulatory issues and key concepts
TLDR
An overview of a CR study is provided with discussion on enabling techniques for CR, measurements on current spectrum use, forthcoming standardization activities, and some findings from recent research studies on spectrum sensing, frequency management, and power control.
Power Control in Cognitive Radio Systems Based on Spectrum Sensing Side Information
TLDR
Numerical results will show that the quality of service for the licensed user can be guaranteed in the presence of the cognitive radio by the proposed approach.
A survey on spectrum management in cognitive radio networks
TLDR
Recent developments and open research issues in spectrum management in CR networks are presented and four main challenges of spectrum management are discussed: spectrum sensing, spectrum decision, spectrum sharing, and spectrum mobility.
A survey of spectrum sensing algorithms for cognitive radio applications
TLDR
In this paper, a survey of spectrum sensing methodologies for cognitive radio is presented and the cooperative sensing concept and its various forms are explained.
Spectrum sensing in cognitive radio networks: requirements, challenges and design trade-offs
TLDR
An overview of the regulatory requirements and major challenges associated with the practical implementation of spectrum sensing functionality in cognitive radio systems is provided and different design trade-offs that have to be made in order to enhance various aspects of the system's performance are outlined.
CRAHNs: Cognitive radio ad hoc networks
White paper: Corvus: A cognitive radio approach for usage of virtual unlicensed spectrum
TLDR
A vision of a Cognitive Radio (CR) based approach that uses allocated spectrum in a opportunistic manner to create "virtual unlicensed bands" i.e. bands that are shared with the primary (often licensed) users on a non-interfering basis is presented.
On cognitive radio networks with opportunistic power control strategies in fading channels
In this paper, we consider a cognitive radio system in fading wireless channels and propose an opportunistic power control strategy for the cognitive users, which serves as an alternative way to…
Implementation issues in spectrum sensing for cognitive radios
TLDR
To improve radio sensitivity of the sensing function through processing gain, three digital signal processing techniques are investigated: matched filtering, energy detection and cyclostationary feature detection.
Cognitive radio: brain-empowered wireless communications
  • S. Haykin
  • Computer Science
    IEEE Journal on Selected Areas in Communications
  • 2005
TLDR
Following the discussion of interference temperature as a new metric for the quantification and management of interference, the paper addresses three fundamental cognitive tasks: radio-scene analysis, channel-state estimation and predictive modeling, and the emergent behavior of cognitive radio.
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