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Adaptive Energy Efficiency Maximization for Cognitive Underwater Acoustic Network under Spectrum Sensing Errors and CSI Uncertainties
Joint Authors
Li, Youming
Wu, Yaohui
Yao, Qingpeng
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-23
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Information Technology and Computer Science
Abstract EN
Energy efficiency (EE) maximization problem for Cognitive Underwater Acoustic Network is investigated in this study.
Available works on EE usually assume that spectrum sensing is accurate or that channel state information (CSI) is perfect, which is often impractical.
Thus, an adaptive resource allocation scheme is proposed to maximize the EE, subject to the transmission power constraint of secondary user (SU) and the interference power constraint of primary user (PU).
By taking the spectrum sensing errors into account, we add power interference from PU to SU in the objective function.
Besides, interference tolerance factor is introduced to control the interference from SU to PU.
Assuming CSI uncertainties of the involved channels are bounded, they are separately modeled as stochastic-case or worst-case according to their nature.
Since the established optimization problem is nonconvex, it is converted into a convex one and then solved by the techniques of fractional programming and dual decomposition.
Simulation results validate that the EE can be improved by classifying the CSI uncertainties and solving the expectation of the CSI correlation function.
Furthermore, the interference from SU to PU can be controlled well by the adjustment of the interference tolerance factor.
American Psychological Association (APA)
Wu, Yaohui& Li, Youming& Yao, Qingpeng. 2019. Adaptive Energy Efficiency Maximization for Cognitive Underwater Acoustic Network under Spectrum Sensing Errors and CSI Uncertainties. Wireless Communications and Mobile Computing،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1212066
Modern Language Association (MLA)
Wu, Yaohui…[et al.]. Adaptive Energy Efficiency Maximization for Cognitive Underwater Acoustic Network under Spectrum Sensing Errors and CSI Uncertainties. Wireless Communications and Mobile Computing No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1212066
American Medical Association (AMA)
Wu, Yaohui& Li, Youming& Yao, Qingpeng. Adaptive Energy Efficiency Maximization for Cognitive Underwater Acoustic Network under Spectrum Sensing Errors and CSI Uncertainties. Wireless Communications and Mobile Computing. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1212066
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1212066