Cognitive Region Design for Overlay Cognitive Satellite Terrestrial Networks

Wen, Xiting; Ruan, Yuhan; Li, Yongzhao; Zhang, Rui

doi:10.1109/lcomm.2020.3022660

Cited by 11 publications

(2 citation statements)

References 17 publications

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“…In particular, the PU and SU can simultaneously use the same spectrum band with interference limitations at the PU receiver in the underlay technique. In contrast, the overlay technique can access the licensed spectrum band in time, frequency, or spatial domain [21,22]. Different levels of cognition are required for each paradigm, leading to different challenges.…”

Section: Introductionmentioning

confidence: 99%

Best Relay Selection Strategy in Cooperative Spectrum Sharing Framework with Mobile-Based End User

et al. 2023

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In this work, a cognitive relay network (CRN) with interference constraint from the primary user (PU) with a mobile end user is studied. The proposed system model employs a half-duplex transmission between a single PU and a single secondary user (SU). In addition, an amplify and forward (AF) relaying technique is employed between the SU source and SU destination. In this context, the mobile end user (SU destination) is assumed to move at high vehicular speeds, whereas other nodes (SU Source, SU relays and PU) are assumed to be stationary. The proposed scheme dynamically determines the best relay for transmission based on the highest signal-to-noise (SNR) ratio by deploying selection combiner at the SU destination, thereby achieving diversity. All channels connected with the stationary nodes are modelled using Rayleigh distribution, whereas all other links connected with the mobile end user are modelled using Nakagami-m fading distribution (m<1). The outage probabilities (OPs) are obtained considering several scenarios and Monte Carlo simulation is used to verify the numerical results. The obtained results show that a variety of factors, including the number of SU relays, the severity of the fading channels, the position of the PU, the fading model, and the mobile end user speed, might influence the CRN’s performance.

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Section: Introductionmentioning

confidence: 99%

Best Relay Selection Strategy in Cooperative Spectrum Sharing Framework with Mobile-Based End User

et al. 2023

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“…C OGNITIVE satellite communications are emerging as a promising solution to improve the spectrum utilization efficiency and provide high throughput with a ubiquitous coverage in future beyond 5G (B5G) and 6G communications [1]. Such communications scenarios impose significant threats, as compared to the previous generation of communication networks, and demanding requirements are further imposed on satellite communications [2].…”

Section: Introductionmentioning

confidence: 99%

Unauthorized Access Detection in Underlay Cognitive Satellite Networks

2021

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This letter proposes a higher order moments-based spectrum sensing method for detecting unauthorized accesses in underlay cognitive satellite communication networks. Exploiting the second, fourth and sixth-order moments of the received signal, an estimate of the hidden signal power is evaluated. Then, the power estimation of the unauthorized user is used as decision variable to distinguish among the presence or absence of an unauthorized transmission within the satellite communication network. The effectiveness of the proposed algorithm is assessed by simulation. The analyses have shown that it overcomes some recently published techniques failing in detecting hidden users in underlay cognitive satellite communications.

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Stackelberg Game Based Secure Transmission Strategy for Cognitive Satellite Terrestrial Networks

Wen

Ruan

et al. 2022

GLOBECOM 2022 - 2022 IEEE Global Communications Conference

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Cognitive Region Design for Overlay Cognitive Satellite Terrestrial Networks

Cited by 11 publications

References 17 publications

Best Relay Selection Strategy in Cooperative Spectrum Sharing Framework with Mobile-Based End User

Best Relay Selection Strategy in Cooperative Spectrum Sharing Framework with Mobile-Based End User

Unauthorized Access Detection in Underlay Cognitive Satellite Networks

Stackelberg Game Based Secure Transmission Strategy for Cognitive Satellite Terrestrial Networks

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