Earticle

초록

영어

Cognitive radio (CR) has recently been identified as a promising technology to solve the spectrum inefficiency problem. CR users or secondary users (SUs) need to sense the presence of primary users (PUs) constantly and rapidly to utilize their unused spectrum. However, detection is compromised when a user experiences shadowing or fading effects. In such cases, the user cannot distinguish between an unused band and a deep fade. So, cooperative spectrum sensing is proposed to improve sensing performance. In this paper, we analyze the different spectrum sensing schemes with different fusion rules and their comparative behavior has also been studied. Moreover, the relationship between the throughput and sensing time in local and cooperative spectrum sensing has been investigated for PU protection and SU spectrum utilization mode. We also observe that average channel utilization depends on the number of cooperative users under PU protection scenario. The analytical results show that cooperative spectrum sensing employing OR rule has better performance than other fusion rules as well as non-cooperative scheme.

목차

Abstract
 1. Introduction
 2. Local Spectrum Sensing Scheme
 3. Cooperative Spectrum Sensing Scheme
 4. Spectrum Utilization
 5. Performance Analysis
 6. Conclusion
 References

키워드

저자

• Mahfuzulhoq Chowdhury [ Department of Computer Science & Engineering, Chittagong University of Engineering & Technology, Chittagong, Bangladesh. ]
• Asaduzzaman [ Department of Computer Science & Engineering, Chittagong University of Engineering & Technology, Chittagong, Bangladesh. ]
• Md Fazlul Kader [ Department of Applied Physics, Electronics and Communication Engineering, University of Chittagong, Chittagong, Bangladesh. ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Signal Processing, Image Processing and Pattern Recognition

• 간기

  격월간

• pISSN

  2005-4254

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605