NDLI: Cognitive Wireless Sensor Networks: Emerging topics and recent challenges

Content Provider	IEEE Xplore Digital Library
Author	Zahmati, A.S. Hussain, S. Fernando, X. Grami, A.
Copyright Year	2009
Description	Author affiliation: Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, Canada (Grami, A.) \|\| Department of Electrical and Computer Engineering, Ryerson University, Canada (Zahmati, A.S.; Hussain, S.; Fernando, X.)
Abstract	Adding cognition to the existing Wireless Sensor Networks (WSNs), or using numerous tiny sensors, similar to the idea presented in WSNs, in a Cognitive Radio Network (CRN) bring about many benefits. In this paper, we present an overview of Cognitive Wireless Sensor Networks (CWSNs), and discuss the emerging topics and recent challenges in the area. We discuss the main advantages, and suggest possible remedies to overcome the challenges. CWSNs enable current WSNs to overcome the scarcity problem of spectrum which is shared with many other successful systems such as Wi-Fi and Bluetooth. It has been shown that the coexistence of such networks can significantly degrade a WSN's performance. In addition, cognitive technology could provide access not only to new spectrum, but also to spectrum with better propagation characteristics. Moreover, by the adaptive change of system parameters such as modulation type and constellation size, different data rates can be achieved which in turn can directly influence the power consumption and the network lifetime. Furthermore, sensor measurements obtained within the network can provide the needed diversity to cope with spectrum fading at the physical layer.
Starting Page	593
Ending Page	596
File Size	337243
Page Count	4
File Format	PDF
ISBN	9781424438778
DOI	10.1109/TIC-STH.2009.5444432
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-26
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Energy consumption Bluetooth Adaptive systems Cognitive Radio Sensor phenomena and characterization Physical layer Cognition Cognitive radio Degradation Wireless sensor networks Spectrum Sensing Wireless Sensor Networks (WSN)
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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