Performance evaluation of cognitive radio networks with imperfect spectrum sensing and bursty primary user traffic
type: Item
instance of: scholarly article
title: Performance evaluation of cognitive radio networks with imperfect spectrum sensing and bursty primary user traffic
zbMATH Open document ID: 1459.94009
DOI: 10.1155/2020/4102046
author: Osama Salameh
author: Herwig Bruneel
author: Sabine Wittevrongel
published in: Mathematical Problems in Engineering
publication date: 2020-07-03T00:00:00Z
review text: Summary: In this paper, we introduce a four-dimensional continuous-time Markov chain model to evaluate the performance of cognitive radio networks. In such networks, secondary (unlicensed) users may opportunistically use the frequency channels not currently occupied by primary (licensed) users in order to increase the utilization of the wireless spectrum. Secondary users perform channel sensing before as well as during transmission in order not to interfere with primary users. The proposed model assumes that primary users arrive according to a bursty arrival process and moreover takes the possible occurrence of sensing errors (false alarms and misdetections) into account. Several performance measures including the collision rate between primary and secondary users, the blocking probabilities of primary or secondary users, and the mean delay of secondary users are derived and illustrated through numerical examples. The results show that the system performance strongly depends on the degree of burstiness in the arrival process of primary users. It is also observed that the quality of service of the primary network can be seriously compromised due to misdetection by secondary users.
Mathematics Subject Classification ID: 94A05
Mathematics Subject Classification ID: 60J28
Mathematics Subject Classification ID: 90B18
zbMATH DE Number: 7217404
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2020/4102046
OpenAlex ID: W3033434440
cites work: Cross-layer modeling and optimization of multi-channel cognitive radio networks under imperfect channel sensing
cites work: Q4367948
cites work: Q5327125
cites work: Essentials of Stochastic Processes
description: scientific article; zbMATH DE number 7217404