Spectrum management in cognitive radio ad hoc networks

@article{Akyildiz2009SpectrumMI,
  title={Spectrum management in cognitive radio ad hoc networks},
  author={Ian F. Akyildiz and Won-Yeol Lee and Kaushik R. Chowdhury},
  journal={IEEE Network},
  year={2009},
  volume={23}
}
The problem of spectrum scarcity and inefficiency in spectrum usage will be addressed by the newly emerging cognitive radio paradigm that allows radios to opportunistically transmit in the vacant portions of the spectrum already assigned to licensed users. For this, the ability for spectrum sensing, spectrum sharing, choosing the best spectrum among the available options, and dynamically adapting transmission parameters based on the activity of the licensed spectrum owners must be integrated… 

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References

SHOWING 1-10 OF 11 REFERENCES
CRAHNs: Cognitive radio ad hoc networks
A survey on MAC protocols for cognitive radio networks
Dynamic open spectrum sharing MAC protocol for wireless ad hoc networks
  • L. Ma, Xianpei Han, C-C. Shen
  • Computer Science, Business
    First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005.
  • 2005
TLDR
The dynamic open spectrum sharing (DOSS) MAC protocol allows nodes to adaptively select an arbitrary spectrum for the incipient communication subject to spectrum availability, and offers real-time dynamic spectrum allocation and high spectrum utilization without relying on any infrastructure.
Optimal spectrum sensing framework for cognitive radio networks
TLDR
Simulation results show that the proposed sensing framework can achieve maximum sensing efficiency and opportunities in multi-user/multi-spectrum environments, satisfying interference constraints.
Efficient Discovery of Spectrum Opportunities with MAC-Layer Sensing in Cognitive Radio Networks
TLDR
This work develops a sensing-period optimization mechanism and an optimal channel-sequencing algorithm, as well as an environment- adaptive channel-usage pattern estimation method that is shown to track time-varying channel-parameters accurately.
Route and spectrum selection in dynamic spectrum networks
  • Qiwei Wang, Haitao Zheng
  • Computer Science, Business
    CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.
  • 2006
TLDR
Experimental results show that the collaborative design, if well-provisioned, offers significant performance improvement compared to the decoupled design.
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.
09 3:01 PM Page 12 Authorized licensed use limited to: Georgia Institute of Technology
  • 09 3:01 PM Page 12 Authorized licensed use limited to: Georgia Institute of Technology
  • 2009
Spectrum Policy Task Force Report
  • Spectrum Policy Task Force Report
  • 2002
...
...