Performance Evaluation of Cognitive Radio Networks with Imperfect Spectrum Sensing and Bursty Primary User Traffic

Salameh, Osama; Bruneel, Herwig; Wittevrongel, Sabine

doi:10.1155/2020/4102046

Cited by 6 publications

(3 citation statements)

References 31 publications

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“…The stability condition is conjectured and verified by simulation in [8] and further proved using a Lyapunov function approach [9]. Salameh et al [10,11] consider models with a limited number of sensing secondary users. Other queueing models of cognitive radio networks could be found in [10,[12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 83%

Modified Erlang Loss System for Cognitive Wireless Networks

et al. 2022

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This paper considers a modified Erlang loss system for cognitive wireless networks and related applications. A primary user has pre-emptive priority over secondary users, and the primary customer is lost if upon arrival all the channels are used by other primary users. Secondary users cognitively use idle channels, and they can stay (either in an infinite buffer or in an orbit) in cases where idle channels are not available upon arrival or they are interrupted by primary users. While the infinite buffer model represents the case with zero sensing time, the infinite orbit model represents the case with positive sensing time. We obtain an explicit stability condition for the cases where arrival processes of primary users and secondary users follow Poisson processes, and their service times follow two distinct arbitrary distributions. The stability condition is insensitive to the service time distributions and implies the maximal throughout of secondary users. Moreover, we extend the stability analysis to the system with outgoing calls. For a special case of exponential service time distributions, we analyze the buffered system in depth to show the effect of parameters on the delay performance and the mean number of interruptions of secondary users. Our simulations for distributions rather than exponential reveal that the mean number of terminations for secondary users is less sensitive to the service time distribution of primary users.

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Section: Introductionmentioning

confidence: 83%

Modified Erlang Loss System for Cognitive Wireless Networks

et al. 2022

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“…The stability condition is conjectured and verified by simulation in [8]. Salameh et al [9,10] consider models with limited number of sensing secondary users. Other queueing models of cognitive radio networks could be found in [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 84%

Modified Erlang loss system for cognitive wireless networks

Morozov¹,

Rogozin²,

Nguyen³

et al. 2021

Preprint

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This paper considers a modified Erlang loss system for cognitive wireless networks and related applications. A primary user has preemptive priority over secondary users and the primary customer is lost if upon arrival all the channels are used by other primary users. Secondary users cognitively use idle channels and they can wait at an infinite buffer in cases idle channels are not available upon arrival or they are interrupted by primary users. We obtain explicit stability condition for the cases where arrival processes of primary users and secondary users follow Poisson processes and their service times follow two distinct arbitrary distributions. The stability condition is insensitive to the service time distributions and implies the maximal throughout of secondary users. For a special case of exponential service time distributions, we analyze in depth to show the effect of parameters on the delay performance and the mean number of interruptions of secondary users. Our simulations for distributions rather than exponential reveal that the mean number of terminations for secondary users is less sensitive to the service time distribution of primary users.

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“…A recurrence coordinated cognitive radio (CR) system is proposed to exploit this circumstance while permitting an unlicensed secondary user (SU) to entrepreneurially reuse authorized recurrence groups without creating interference to the authorized user. One of the major necessities of such a framework is that SU ought not to produce destructive obstruction to PU [3][4]. Therefore, SU's handset must be equipped for detecting the radio channel to decide whether PU is available or not by checking various performance parameters [5].…”

Section: Introductionmentioning

confidence: 99%

Low Access Latency and High Throughput for Full-Duplex Cognitive Radio Using Mobility Caching Placement Strategy

Srilatha¹,

Bharathi

2022

Adv. technol. innov.

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In a remote framework, the densely allotted radio range is not effectively utilized by an authorized primary user, which limits a secondary user to avoid disturbance to a primary user while utilizing a channel. To solve the shortage problem of accessible range, this study proposes a mobility caching placement strategy (MCPS) based sliding window scheme to optimize the latency and throughput of cognitive radio system. The performance parameters of the proposed system are analyzed using energy detection metrics by considering full-duplex communication. By the MATLAB analysis and the evaluation with and without self-interference suppression, the results demonstrate that the entrance inactivity of the MCPS based sliding window is diminished by a factor of 1.9 as contrasted with the existing full-duplex systems. With the improved latency and throughput, the proposed method can avoid the ruinous impacts of drawn-out self-residual suppression more effectively compared to the existing approaches.

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Performance Evaluation of Cognitive Radio Networks with Imperfect Spectrum Sensing and Bursty Primary User Traffic

Cited by 6 publications

References 31 publications

Modified Erlang Loss System for Cognitive Wireless Networks

Modified Erlang Loss System for Cognitive Wireless Networks

Modified Erlang loss system for cognitive wireless networks

Low Access Latency and High Throughput for Full-Duplex Cognitive Radio Using Mobility Caching Placement Strategy

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