2018
DOI: 10.1109/tvt.2018.2791859
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Robust Chance-Constrained Secure Transmission for Cognitive Satellite–Terrestrial Networks

Abstract: Abstract-Cognitive satellite-terrestrial networks (CSTNs) have been recognized as a promising network architecture for addressing spectrum scarcity problem in next-generation communication networks. In this paper, we investigate the secure transmission for CSTNs where the terrestrial base station (BS) serving as a green interference resource is introduced to enhance the security of the satellite link. Adopting a stochastic model for the channel state information (CSI) uncertainty, we propose a secure and rob… Show more

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Cited by 129 publications
(68 citation statements)
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“…2) Backhaul Uplink: The computation tasks of HAPs may be also offloaded to the LEO satellite via the backhaul uplink due to the placement of enhanced MEC server at the LEO satellite. Different form the G2A and A2A LOS communication links, the air-to-space (A2S) backhaul uplink is determined by a Rician fading channel model with the AWGN [10], [11]. Specifically, the channel fading coefficient between HAP j and the LEO satellite is modeled as a circularly symmetric complex Gaussian random variable, i.e., h j = X 1 +X 2 i, where…”
Section: B Communication Modelmentioning
confidence: 99%
“…2) Backhaul Uplink: The computation tasks of HAPs may be also offloaded to the LEO satellite via the backhaul uplink due to the placement of enhanced MEC server at the LEO satellite. Different form the G2A and A2A LOS communication links, the air-to-space (A2S) backhaul uplink is determined by a Rician fading channel model with the AWGN [10], [11]. Specifically, the channel fading coefficient between HAP j and the LEO satellite is modeled as a circularly symmetric complex Gaussian random variable, i.e., h j = X 1 +X 2 i, where…”
Section: B Communication Modelmentioning
confidence: 99%
“…(6) When the secrecy rates in (4), (5) are positive values, substituting (4) and (5) into (6), we can obtain:…”
Section: Problem Formulationmentioning
confidence: 99%
“…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%
“…In order to counteract the signal-tointerference and noise ratio (SINR) degradation caused by the CSI estimation error, a robust beamforming has been proposed. There are two types of method invoked for describing the CSI imperfections, namely the so-called determined bounded model [8] and the random model [9]. Specifically, Wang et al [8] maximized the worst-case received SINR by solving a max-min optimization problem under a bounded uncertainty for multi-input multi-output (MIMO) systems, which may not necessarily result in a better convex restrictive approximation.…”
Section: Introductionmentioning
confidence: 99%
“…However, there is a significant variation in the channel phase component arising out of time varying phase perturbations and the high RTD will induce the outdated CSI [11]. To qualify the service of satellite, Li et al proposed a secure and robust beamforming framework for cognitive satellite-terrestrial networks (CSTNs) to minimize the transmit power under a stochastic model for the CSI uncertainty [9]. However, most of the existing contributions dedicated only limited attention to the phase perturbations induced by a number of impairments, such as the presence of the satellite's non-linear transponders and conditioning filters, the channel fading and the imperfect synchronization caused by the oscillator [13].…”
Section: Introductionmentioning
confidence: 99%