NDLI: Detection performances and effective capacity of cognitive radio with primary user emulators

Content Provider	IET Digital Library
Author	Yang, Yijie Zhang, Luyong Li, Xuan Zhao, Chenglin
Abstract	The performances of cognitive radio system have been studied with primary user emulators existing. In this study, the authors use the theory of effective capacity to study the performances under quality-of-service (QoS) constraints in the link layer. New decision rules are proposed to decide the channel states. For a cognitive radio channel, the secondary users send data at two different rates regarding the channel states of being idle or occupied by primary users. When the channel is sensed as being occupied by a primary user emulator, which is performed by a secondary user, the secondary user stops the data transmission. To model the transmission channel, an 18-state model of transition is constructed. The effective capacity expression of such cognitive system is also derived and analysed with different transmission rates. Besides, the impact on the effective capacity from the system parameters is investigated. It is shown from the numerical results that under the proposed decision rules, sensing durations and thresholds affect the detection probabilities greatly. For the effective capacity, it is shown that QoS imposes the most effect on the effective capacity, sensing durations and transmission rates can impact the effective capacity in certain regions.
Starting Page	976
Ending Page	983
Page Count	8
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 8, May (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.1140
Journal	IET Communications
Publisher Date	2018-02-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	18-state Model Channel Capacity Cognitive Radio Cognitive Radio Channel System Data Transmission Channel Decision Rule Decision Theory Detection Performance Game Theory Numerical Analysis Numerical Method Primary User Emulator Probability QoS Quality of Service Secondary User Wireless Channel Wireless Sensor Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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