Physical-Layer Security for Proximal Legitimate User and Eavesdropper: A Frequency Diverse Array Beamforming Approach

Lin, Jie; Li, Qiang; Yang, Jun; Shao, Huaizong; Wang, Wen-Qin

doi:10.1109/tifs.2017.2765500

Cited by 78 publications

(48 citation statements)

References 30 publications

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“…In the first stage, we optimize the frequency offsets across the antennas to rotate the channels of LU and Eve as orthogonal as possible. Specifically, for the identified special cases, the optimal frequency offsets can be obtained; for the general case, however, we develop an iterative algorithm utilizing the block successive upper-bound minimization (BSUM) method to find a solution for frequency offsets with stationary convergence guarantee [16]. This is not covered in this paper due to space limitation.…”

Section: Two-stage Algorithmmentioning

confidence: 99%

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Frequency diverse array beamforming for physical-layer security with directionally-aligned legitimate user and eavesdropper

Lin

Yang

2017

2017 25th European Signal Processing Conference (EUSIPCO)

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Abstract-The conventional physical-layer (PHY) security approaches, e.g., transmit beamforming and artificial noise (AN)-based design, may fail when the channels of legitimate user (LU) and eavesdropper (Eve) are close correlated. Due to the highly directional transmission feature of millimeter-wave (mmWave), this may occur in mmWave transmissions as the transmitter, Eve and LU are aligned in the same direction exactly. To handle the PHY security problem with directionally-aligned LU and Eve, we propose a novel frequency diverse array (FDA) beamforming approach to differentiating the LU and Eve. By intentionally introducing some frequency offsets across the antennas, the FDA beamforming generates an angle-range dependent beampattern. As a consequence, it can degrade the Eve's reception and thus achieve PHY security. In this paper, we maximize the secrecy rate by jointly optimizing the frequency offsets and the beamformer. This secrecy rate maximization (SRM) problem is hard to solve due to the tightly coupled variables. Nevertheless, we show that it can be reformulated into a form depending only on the frequency offsets. Building upon this reformulation, we identify some cases where the SRM problem can be optimally solved in closed form. Numerical results demonstrate the efficacy of FDA beamforming in achieving PHY security, even for aligned LU and Eve.

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Section: Two-stage Algorithmmentioning

confidence: 99%

“…This is not covered in this paper due to space limitation. The details can be found in the journal version [16] (submitted to IEEE TIFS). In the second stage, the beamformer is optimized based on the given frequency offsets according to (13).…”

Section: Two-stage Algorithmmentioning

confidence: 99%

Frequency diverse array beamforming for physical-layer security with directionally-aligned legitimate user and eavesdropper

Lin

Yang

2017

2017 25th European Signal Processing Conference (EUSIPCO)

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“…Owing to the favorable characteristic that the beampattern is both range and angle dependent, FDA technology, in recent years [10]- [16], has been applied into DM synthesis for wireless PLS transmissions. Specifically, the authors in [10] achieved directional modulation synthesis using the FDA with linearly increasing frequency increments.…”

Section: Introductionmentioning

confidence: 99%

“…The spread spectrum technology was combined with orthogonal FDA in [15] to achieve multi-beam DM synthesis in free space. Recently, the work in [16] generalized the wireless PLS transmissions based on FDA technology for proximal legitimate user and eavesdropper.…”

Section: Introductionmentioning

confidence: 99%

A Two-Ray Multipath Model for Frequency Diverse Array-Based Directional Modulation in MISOME Wiretap Channels

Cheng

Fusco

Wang

et al. 2019

2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)

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A two-ray multipath model for frequency diverse array (FDA)-based directional modulation (DM) is proposed in multi-input single-output multi-eavesdropper (MISOME) wiretap channels for the first time. The excitation factors of the FDA and the weighting coefficients of the inserted artificial noise (AN) are jointly designed in a way which imposes no impact on the desired receiver while simultaneously distorting the received signals of eavesdroppers. Secrecy rate is analyzed for the proposed two-ray multipath FDA-based DM model. Numerical simulations verify the capability of physical layer secure (PLS) transmissions of the proposed FDA-DM model in two-ray multipath MISOME wiretap channels.

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“…In the research of improving the physical layer security performance, the physical layer security performance is improved by transmitting artificial noise and optimizing the beamforming matrix [3][4][5]. In literature [6], the antenna selection method is proposed to improve the physical layer security performance of the HetNets.…”

Section: Introductionmentioning

confidence: 99%

Physical Layer Security Performance Based on 3D Heterogeneous Network

Zhao

et al. 2018

Wireless Communications and Mobile Computing

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The distribution of the base stations (BSs) and users is mostly designed as a two-dimensional model in the study about heterogeneous networks (HetNets), which is not suitable for ultra-dense network scenarios. Meanwhile, the eavesdroppers existing in vertical dimension directly reduce the physical layer security of the HetNets. To tackle the mentioned problem, we propose to adjust the vertical dimension of the full-dimension (FD) antenna placed in the BSs; then the signal-to-noise ratios (SNRs) of the legitimate users and eavesdroppers are given due to the tilted angle. According to the three-dimensional Poisson point process (PPP) of BSs and users, the cumulative distribution function of SNR is deduced, which derives the closed expression of average security rate. The simulation results verify the correctness of the closed expression and the feasibility of proposed scenarios that the physical layer security performance can be improved by adjusting the vertical tilt angle. And density ratio of the BSs can be obtained in the various specific scenes.

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Physical-Layer Security for Proximal Legitimate User and Eavesdropper: A Frequency Diverse Array Beamforming Approach

Cited by 78 publications

References 30 publications

Frequency diverse array beamforming for physical-layer security with directionally-aligned legitimate user and eavesdropper

Frequency diverse array beamforming for physical-layer security with directionally-aligned legitimate user and eavesdropper

A Two-Ray Multipath Model for Frequency Diverse Array-Based Directional Modulation in MISOME Wiretap Channels

Physical Layer Security Performance Based on 3D Heterogeneous Network

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