NDLI: Resource optimisation using bandwidth-power product for multiple-input multiple-output orthogonal frequency-division multiplexing access system in cognitive radio networks

Content Provider	IET Digital Library
Author	Chen, Bo Zhao, Minjian Zhang, Lei Lei, Ming
Abstract	This study investigates resource allocation problems for a point-to-point multi-carrier multiple-input multiple-output cognitive radio network. Different from conventional resource optimisation problems, a joint power and bandwidth resource optimisation framework using the novel optimisation metric, namely bandwidth-power product, is developed. Besides, rate requirement of the secondary system is satisfied, and the interferences introduced to the primary users (PUs) are below threshold of tolerance. The optimal source precoding matrix is designed and two methods, namely the project-channel singular value decomposition (SVD) and direct-channel SVD methods, are applied to satisfy interference power constraints for PUs. Then the unified power and channel allocation problem is derived and found to be a mixed-integer programming problem. Hence, a sub-optimal and tractable algorithm with low complexity is proposed. The innovative idea is to determine the channel resource budget by selecting the best channels, where the criterion for evaluating the quality of channel is detailed discussed. Then the power optimisation subproblem and channel allocation subproblem can be performed independently using the Lagrange-duality theory and Gauss–Newton method, respectively. The simulation results show significant improvement in spectral efficiency by using this framework compared to classical power optimisation framework using the waterfilling scheme.
Starting Page	1710
Ending Page	1720
Page Count	11
ISSN	17518628
Volume Number	9
e-ISSN	17518636
Issue Number	Issue 14, Sep (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/9/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.1108
Journal	IET Communications
Publisher Date	2015-08-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algebra Bandwidth-power Product Cognitive Radio Frequency Division Multiple Access Gauss-Newton Method Integer Programming Joint Power And Bandwidth Resource Optimisation Framework Lagrange-duality Theory MIMO Communication Mixed-integer Programming Problem Multiple Access Communication Multiple-input Multiple-output Orthogonal Frequency-division Multiplexing Access System Optimal Source Precoding Matrix Optimisation Metric Optimisation Technique Point-to-point Multi-carrier Multiple-input Multiple-output Cognitive Radio Network Primary User Project-channel Singular Value Decomposition Radio Link And Equipment Resource Allocation Resource Allocation Problem Signal Processing And Detection Singular Value Decomposition SVD
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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