NDLI: Cognitive opportunistic relaying systems with mobile nodes: average outage rates and outage durations

Content Provider	IET Digital Library
Author	Jia, Xiangdong Yang, Longxiang Zhu, Hongbo
Abstract	In the existing literature about cognitive radio opportunistic relaying (CR-OR) systems, the first-order statistics such as outage probability are investigated widely. However, for the second-order statistics, such as average outage duration (AOD) and average outage rate (AOR), there is not open works, still. To obtain a comprehensive cognition on the behaviour of mobile communication systems, this study focuses on the second-order statistical properties of CR-OR systems. There are two CR-OR schemes considered, in which the canonical amplify-and-forward (AF) and reactive decode-and-forward (RDF) are employed, respectively. Since the equivalent end-to-end signal-to-noise ratio (SNR) of AF CR-OR is complicated such that it is very difficult to obtain the closed-form solution to AOR of AF CR-OR schemes, the high SNR approximation in AF CR-OR schemes is employed. For the two schemes, first the closed-form solutions to AORs and AODs are obtained by using appropriate mathematical proof. Based on the derivations, the comparison analyses about AORs and AODs of the two schemes are provided. The comparison results show that, under high SNR approximation, the AF CR-OR scheme achieves the same AOR and AOD as RDF CR-OR. Finally, the impact of system parameters on AORs and AODs is provided.
Starting Page	789
Ending Page	799
Page Count	11
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 6, Apr (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2013.0590
Journal	IET Communications
Publisher Date	2014-02-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Amplify And Forward Communication Amplify-and-forward AOD AOR Approximation Theory Average Outage Duration Average Outage Rate Cognitive Radio Cognitive Radio Opportunistic Relaying System CR-OR System Decode And Forward Communication End-to-end Signal-to-noise Ratio End-to-end SNR First-order Statistics High SNR Approximation Interpolation And Function Approximation Mobile Communication Mobile Communication System Mobile Radio System Numerical Analysis Outage Probability Probability RDF Reactive Decode-and-forward Relay Network Second-order Statistical Property Statistical Analysis Statistics Telecommunication
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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