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Deanship of Graduate Studies
Document Details
Document Type
:
Thesis
Document Title
:
SECURE SPECTRUM SENSING IN COGNITIVE RADIO SENSOR NETWORKS
تأمين استشعار الطيف التعاوني في شبكات المجسات ذات الراديو الادراكي
Subject
:
Faculty of Computing and Information Technology
Document Language
:
Arabic
Abstract
:
The huge demand for spectrum in unlicensed frequency bands has created immediate requirements to make the licensed spectrum bands available to unlicensed users. Spectrum shortage and harsh wireless environment in some applications have become a challenging bottleneck to achieve reliable communications. Cognitive radio is the emerging technology to achieve both spectrum and reliability awareness. Cooperative spectrum sensing takes advantage of spatial diversity to reduce the impact of receiver uncertainty. However, the harsh wireless environment limits the advantages of cooperation due to variations of signal to noise ratio on which energy detection technique depends on. Furthermore, cooperative spectrum sensing opens up opportunities for new types of security attacks such as spectrum sensing data falsification attack, where malicious secondary users intentionally send false sensing reports about spectrum availability to mislead the fusion center. This internal attack cannot be prevented using traditional cryptography mechanisms. This thesis proposes a fuzzy logic based reliable and secure cooperative spectrum sensing in harsh environment. The performance is simulated and results indicated the superiority of the proposed system to enhance the accuracy of spectrum decision in the harsh environment and in the presence of malicious secondary users.
Supervisor
:
Dr. Laila Mohammed
Thesis Type
:
Doctorate Thesis
Publishing Year
:
1442 AH
2021 AD
Added Date
:
Monday, June 7, 2021
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
ريمه محمد الحبشي
Al-Habashi, Reema Mohammed
Researcher
Doctorate
Files
File Name
Type
Description
47035.pdf
pdf
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