NDLI: Optimal spectrum assignment for cognitive radio sensor networks under coverage constraint

Content Provider	IET Digital Library
Author	Eletreby, Rashad M. Elsayed, Hany M. Khairy, Mohamed M.
Abstract	Cognitive radios emerged as a solution to spectrum scarcity problem. The integration of cognitive radios and wireless sensor networks enables a new paradigm of communication, in which the sensor nodes can avoid heavily-crowded transmission bands by tuning their transmission parameters to less-crowded bands. The authors consider the problem of spectrum assignment for cognitive radio sensor network (CRSN) under coverage, interference, minimum data rate and power budget constraints. A mixed-integer non-linear programming problem formulation that addresses optimal power allocation, channel selection and node scheduling is presented. Following a practical assumption, that any CRSN node can only access one channel for its transmission with the CRSN base station, the problem is transformed to a binary linear programming (BLP) problem. Using the relaxation techniques, the problem is transformed to a linear programming problem that is solvable in polynomial time, and has the same optimal solution of the BLP problem. Hence, the minimum power algorithm that achieves the optimal solution of our problem is proposed. To further reduce the complexity of the solution, three heuristic lower-complexity algorithms are proposed to solve the problem: random, greedy and two-stage (decoupled) algorithms.
Starting Page	3318
Ending Page	3325
Page Count	8
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 18, Dec (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.0423
Journal	IET Communications
Publisher Date	2014-12-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algebra Base Station Binary Linear Programming Problem BLP Problem Channel Selection Cognitive Radio Cognitive Radio Sensor Network CRSN Decoupled Algorithm Electromagnetic Compatibility Greedy Algorithm Heavily-crowded Transmission Band Avoidance Heuristic Lower-complexity Algorithm Integer Programming Interference Legislation, Frequency Allocation And Spectrum Pollution Linear Programming Minimum Data Rate Constraint Minimum Power Algorithm Mixed-integer Nonlinear Programming Problem Node Scheduling Nonlinear Programming Optimal Power Allocation Optimal Spectrum Assignment Optimisation Technique Polynomial Polynomial Time Power Budget Constraint Radio Frequency Interference Radio Network Radio Spectrum Management Random Algorithm Random Processes Relaxation Technique Scheduling Spectrum Scarcity Problem Statistics Two-stage Algorithm Wireless Channel Wireless Sensor Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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