Power Allocation Strategy of Maximizing Secrecy Rate for Secure Directional Modulation Networks

Wan, Siming; Shu, Feng; Lü, Jian; Gui, Guan; Wang, Jun; Xia, Guiyang; Zhang, Yijin; Li, Jun; Wang, Jiangzhou

doi:10.1109/access.2018.2815779

Cited by 31 publications

(21 citation statements)

References 22 publications

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“…Since secrecy rate (SR) is an important factor in secure communication, authors in [29] and [30] derived the optimal solutions of PA by maximizing SR. In [31], the closedform expression of OPA factors can be derived by using the Lagrange multiplier method, with determined beamforming vector and AN projection matrix based on NSP scheme. The authors in [32] and [33] proposed several OPA methods in secure DM networks with UAV users.…”

Section: Introductionmentioning

confidence: 99%

“…4 depicts the histograms of the SR versus the number of antennas at Alice N for two schemes at three typical transmit SNR : 5, 15, 25dB, respectively. Compared with the NSP based PA strategy in [31], the proposed AIS of Max-SR scheme achieves greater SR. More importantly, in the medium or high SNR, the SR performance utilizing the proposed scheme can make an improvement up to 16% when the antenna scale is medium. Fig.…”

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confidence: 99%

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Energy-efficient alternating iterative secure structure of maximizing secrecy rate for directional modulation networks

Sun

Zhang

et al. 2020

Physical Communication

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In a directional modulation (DM) network, the issues of security and privacy have taken on an increasingly important role. Since the power allocation of confidential message and artificial noise will make a constructive effect on the system performance, it is important to jointly consider the relationship between the beamforming vectors and the power allocation (PA) factors. To maximize the secrecy rate (SR), an alternating iterative structure (AIS) between the beamforming and PA is proposed. With only two or three iterations, it can rapidly converge to its rate ceil. Simulation results indicate that the SR performance of proposed AIS is much better than the null-space projection (NSP) based PA strategy in the medium and large signal-to-noise ratio (SNR) regions, especially when the number of antennas at the DM transmitter is small.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Energy-efficient alternating iterative secure structure of maximizing secrecy rate for directional modulation networks

Sun

Zhang

et al. 2020

Physical Communication

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“…In multicast scenario, a secure pre-coding method was proposed in [18] with the aid of AN. In [19], given any precoder of confidential messages and AN projection matrix, the authors proposed an optimal power allocation strategy of maximizing the secrecy rate in DM networks. With this strategy, the secrecy rate has been greatly improved.…”

Section: Introductionmentioning

confidence: 99%

Two Practical Random-Subcarrier-Selection Methods for Secure Precise Wireless Transmissions

Shen

Zhang²,

Chen

et al. 2019

IEEE Trans. Veh. Technol.

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In directional modulation (DM) networks, two practical random-subcarrier-selection (RSS) methods are proposed to transmit confidential message to the desired user per orthogonal frequency division multiplexing (OFDM) symbol with only single receive power peak formed by constructing random subcarrier set and performing a randomization procedure. This scheme completely addresses the crucial problem facing secure precise wireless transmission (SPWT), how to achieve the SPWT per OFDM symbol while the traditional SPWT holds only in the statistically average sense. Several necessary conditions for SPWT per OFDM is derived and proposed: random, distributed, and distinct subcarrier spacing pattern mapped onto transmit antenna array. Two random subcarrier index sets, quadratic subcarrier set (QSS) and prime subcarrier set (PSS), are constructed. Subsequently, a random metric is defined, and a randomization procedure (RP) is proposed. Its detailed process includes the following steps: integer mod, ordering, blocking, and block interleaving (BI) where BI is repeated until the random metric is greater than the predefined value. This yields a single high energy main peak (SHEMP) at the desired position with other positions, outside the main peak, harvesting only weak receive energy seriously corrupted by AN. Simulation results confirm that our proposed two methods, QSS plus RP and PSS plus RP, perform significantly better than conventional methods such as linear subcarrier set (LSS) plus RP. They actually form a SHEMP at desired position, and generate only extremely small leakage outside the main peak.

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“…In [11], the robust scheme has been generalized for the multi-user multiple-input and multiple output (MU-MIMO) scenario. To maximize the secrecy rate of the AN-based DM systems, Yu et al [12] and Wan et al [13] proposed two novel optimization schemes: general power iterative based beamforming scheme and secrecy rate based power allocation strategy. Moreover, Zhou et al [14] proposed a robust and secure DM technique for amplify-and-forward relaying networks.…”

Section: Introductionmentioning

confidence: 99%

Broadcasting Directional Modulation Based on Random Frequency Diverse Array

Xie

Qiu

Wang

et al. 2019

Wireless Communications and Mobile Computing

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Frequency diverse array- (FDA-) based directional modulation (DM) is a promising technique for physical layer security, due to its angle-range dependent transmit beampattern. However, the existing schemes are not suitable for the broadcasting scenario, where there are multiple legitimate users (LUs) to receive the confidential message. In this paper, we propose a novel random frequency diverse array- (RFDA-) based DM scheme to realize the point to multi-point broadcasting secure transmission in both angle and range dimension. In the first stage, the beamforming vector is designed to maximize the artificial noise (AN) power, while satisfying the power requirement of LUs for transmitting the confidential message simultaneously. In the second stage, the AN projection matrix is obtained by maximizing signal-to-interference-plus-noise ratio (SINR) at the LUs. The proposed scheme only broadcasts the confidential message to the locations of LUs while the other regions are covered by AN, which promotes the security of the wireless broadcasting system. Moreover, it is energy efficient since the power of each LU is under accurate control. Numerical simulations are presented to validate the performance of the proposed scheme.

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Power Allocation Strategy of Maximizing Secrecy Rate for Secure Directional Modulation Networks

Cited by 31 publications

References 22 publications

Energy-efficient alternating iterative secure structure of maximizing secrecy rate for directional modulation networks

Energy-efficient alternating iterative secure structure of maximizing secrecy rate for directional modulation networks

Two Practical Random-Subcarrier-Selection Methods for Secure Precise Wireless Transmissions

Broadcasting Directional Modulation Based on Random Frequency Diverse Array

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