Earticle

초록

영어

In cognitive radio networks, spectrum sensing is used to detect the spectral state of authorized users. In particular, upon detecting primary users (PUs) appearances, Secondary User (SU) vacates the channel and performs the spectrum handoff. In order to protect the PUs, interference constrains and reserved channel are considered. If the SU can’t find any idle channel after the whole spectrum sensing, it carries out spectrum handoff to the reserved channel. In addition, spectrum handoff delay is derived. The nonlinear constrained optimization problem for the presented approach is formulated. In special, the goal is to minimize the SU’s handoff delay while protecting the PU from the interference. Numerical results discuss the impact factors on the handoff delay. Lower interference constrains can not only protect the PUs, but also can provide the lower handoff delay for SUs.

목차

Abstract
 1. Introduction
 2. System Model
 3. The Proposed Spectrum Handoff Scheme
  3.1 PU’s Arrival Model
  3.2 SU’s Spectrum Sensing
  3.3 SU’s Spectrum Handoff
 4. Performance Optimization of Spectrum Handoff
  4.1 Analysis of Handoff Delay
  4.2 Problem Optimization of Proposed Spectrum Handoff
 5. Simulation Results and Analysis
 6. Conclusion
 Acknowledgements
 References

키워드

저자

• Hong Du [ College of information technology, Heilongjiang Bayi Agricultural University, Daqing and 163319, China ]
• Shuang Fu [ College of information technology, Heilongjiang Bayi Agricultural University, Daqing and 163319, China ]
• Tingyi Shang [ College of information technology, Heilongjiang Bayi Agricultural University, Daqing and 163319, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Future Generation Communication and Networking

• 간기

  격월간

• pISSN

  2233-7857

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605