2018
DOI: 10.1109/lwc.2017.2755014
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Resource Allocations for Secure Cognitive Satellite-Terrestrial Networks

Abstract: Cognitive satellite-terrestrial networks (STNs) have been recognized as the promising architecture for addressing spectrum scarcity in the next generation communication networks. In this letter, we investigate the secure transmission schemes in the cognitive STNs where the interference from terrestrial base station (BS) is introduced to enhance security of the satellite link. Our objectives are to minimize the transmit power by jointly optimizing the cooperative beamforming and artificial noise (AN) while guar… Show more

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Cited by 76 publications
(41 citation statements)
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References 17 publications
(37 reference statements)
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“…For practical purposes, the satellite link is modeled by composite fading distribution for describing the statistical properties of the signal envelope accurately. Currently, the Shadowed-Rician fading model has been widely-adopted in the literature [3], [24], [32]. Based on this model, the corresponding channel fading coefficient is given bỹ…”
Section: A Satellite Channel Modelmentioning
confidence: 99%
“…For practical purposes, the satellite link is modeled by composite fading distribution for describing the statistical properties of the signal envelope accurately. Currently, the Shadowed-Rician fading model has been widely-adopted in the literature [3], [24], [32]. Based on this model, the corresponding channel fading coefficient is given bỹ…”
Section: A Satellite Channel Modelmentioning
confidence: 99%
“…We aim to maximize the minimal achievable secrecy rate (ASR) of multiple IRs subject to the constraints of energy harvest requirement, interference threshold of earth station (ES), and the transmit power budget of the BS. As the original problem is nonconvex, we employ the sequential convex approximation (SCA) method and propose an iterative BF algorithm to obtain the optimal solution, which is different from the conventional semidefinite relaxation (SDR) based methods [3], [14]. Simulation results confirm the effectiveness and superiority of our proposed BF scheme.…”
mentioning
confidence: 78%
“…To overcome this issue, physical-layer security (PLS) [4][5][6][7][8][9] has been recently proposed to employ the opening characters of wireless channels to achieve secret communication, resulting in achieving "absolute" security from the concept of information theory. There has been some work to exploit PLS for D2D communications.…”
Section: Introduction and Related Workmentioning
confidence: 99%