NDLI: Delay analysis for multiple channel access in cognitive radio networks

Content Provider	IEEE Xplore Digital Library
Author	Masrub, A.
Copyright Year	2014
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Al-Mergib Univ., Al-Khoms, Libya (Masrub, A.)
Abstract	With the rapid development of radio technology, the problem of spectrum scarcity becomes an important area of research in the wireless communications field. Cognitive Radio (CR) technology is introduced as a solution to allow secondary (unlicensed) users to utilize the available frequency bands that are unutilized by primary (licensed) users. This feature, offered to CR users, has shown great potential for enhancing the performance of wireless networks and meeting the demands of future generation wireless applications. However, using this technology will impose several challenges influence the performance of the primary network. In this paper, the queuing system delay is studied, and a dynamic channel allocation technique for CR networks is presented. Based on multi-channel and time slotted scenario, the proposed scheme determines the optimal channel for spectrum switching. Moreover, in this paper, we discuss the interference problem caused by a simultaneous transmission of CR users and primary users. The large message segmentation subject to collision constraints is also investigated in this work. The simulation results have shown that the average delay can be reduced using the M/D/1 queuing model, which can improve the CR network performance. The proposed model is then used to evaluate the effects of the number of channels and channel utilization on the network performance.
Sponsorship	IEEE Lebanon Sect.
Starting Page	398
Ending Page	402
File Size	550188
Page Count	5
File Format	PDF
ISBN	9781479923373
DOI	10.1109/MELCON.2014.6820567
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-04-13
Publisher Place	Lebanon
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delays Cognitive radio Interference Throughput Switches Data communication Sensors Dynamic Spectrum Access (DSA) Wireless Networks (WN) Cognitive Radio (CR) Spectrum Switching
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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