Artificial-Noise-Aided Zero-Forcing Synthesis Approach for Secure Multi-Beam Directional Modulation

Xie, Tao; Zhu, Jiang; Li, Yang

doi:10.1109/lcomm.2017.2772228

Cited by 61 publications

(65 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…exp j 2π∆f n,l t − r c + 2πf 0 nd sin θ c (16) In (16), the terms inside the summation sign are decided by the geometry and the frequency-offset scheme of the system, therefore sub-steering vector caused by the L carriers of the n-th antenna element can be written as (17) in the next page [42] [43], which is an L × 1 vector. As a result, the overall normalized steering vector of the symmetrical multi-carrier FDA can be calculated by…”

Section: A Fundamentals Of Symmetrical Multi-carrier Fdamentioning

confidence: 99%

WFRFT-Aided Power-Efficient Multi-Beam Directional Modulation Schemes Based on Frequency Diverse Array

Cheng

Fusco

Zhu

et al. 2019

IEEE Trans. Wireless Commun.

Self Cite

View full text Add to dashboard Cite

The artificial noise (AN) aided multi-beam directional modulation (DM) technology is capable of wireless physical layer secure (PLS) transmissions for multiple desired receivers in free space. The application of AN, however, makes it less powerefficient for such a DM system. To address this problem, the weighted fractional Fourier transform (WFRFT) technology is employed in this paper to achieve power-efficient multi-beam DM transmissions. Specifically, a power-efficient multi-beam WFRFT-DM scheme with cooperative receivers and a power-efficient multi-beam WFRFT-DM scheme with independent receivers are proposed based on frequency diverse array (FDA), respectively. The bit error rate (BER), secrecy rate, and robustness of the proposed multi-beam WFRFT-DM schemes are analyzed. Simulations demonstrate that 1) the proposed multi-beam WFRFT-DM schemes are more power-efficient than the conventional multibeam AN-DM scheme; 2) the transmission security can also be guaranteed even if the eavesdroppers are located close to or the same as the desired receivers; and 3) the proposed multi-beam WFRFT-DM schemes are capable of independent transmissions for different desired receivers with different modulations.Index Terms-Physical layer security (PLS), directional modulation (DM), frequency diverse array (FDA), WFRFT, powerefficient, multi-beam.

show abstract

Section: A Fundamentals Of Symmetrical Multi-carrier Fdamentioning

confidence: 99%

WFRFT-Aided Power-Efficient Multi-Beam Directional Modulation Schemes Based on Frequency Diverse Array

Cheng

Fusco

Zhu

et al. 2019

IEEE Trans. Wireless Commun.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Both the normalization matrices of the ZF method in [6] [11] and the proposed SVD method are designed as H H (Υ d , Θ d ) † , so the complexity depends on the orthogonal matrix P 2 and the inserted AN z, as shown in Table I. Here, we consider the time complexity of calculating the orthogonal matrix P 2 .…”

Section: B Time Complexitymentioning

confidence: 99%

“…A low-complexity DM synthesis method was proposed in [2], which transferred the DM synthesis from RF frontend to baseband. Afterwards, multi-beam angle-dependent DM synthesis methods were researched in [3]- [6]. Specifically, the orthogonal vector synthesis approach was implemented in [3], while [4] proposed a robust synthesis method for multi-beam DM scheme with imperfect direction knowledge.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

SVD-Aided Multi-Beam Directional Modulation Scheme Based on Frequency Diverse Array

Cheng

Fusco

Zhu

et al. 2020

IEEE Wireless Commun. Lett.

Self Cite

View full text Add to dashboard Cite

With the assistance of singular value decomposition (SVD), a multi-beam directional modulation (DM) scheme based on symmetrical multi-carrier frequency diverse array (FDA) is proposed. The proposed DM scheme is capable of achieving range-angle dependent physical layer secure (PLS) transmissions in free space with much lower complexity than the conventional zero-forcing (ZF) method. Theoretical and simulated results about secrecy rate and complexity verify the improved computational efficiency and considerable memory savings despite a very small penalty of secrecy rate.

show abstract

“…In two typical scenarios, the transmitter with multiple antennas and the multiple-relay cooperation were used to improve the secret communication in [2]. In [5], the authors proposed an AN-aided zero forcing synthesis approach for secure multi-beam DM, and the dynamic multi-beam DM was achieved by randomly changing the AN vector at the symbol rate. As such, the intended users could receive confidential information while illegitimated users could not successfully recover the confidential messages.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

View full text Add to dashboard Cite

In this paper, given the beamforming vector of confidential messages and artificial noise (AN) projection matrix and total power constraint, a power allocation (PA) strategy of maximizing secrecy rate (Max-SR) is proposed for secure directional modulation (DM) networks. By the method of Lagrange multiplier, the analytic expression of the proposed PA strategy is derived. To confirm the benefit from the Max-SRbased PA strategy, we take the null-space projection (NSP) beamforming scheme as an example and derive its closed-form expression of optimal PA strategy. From simulation results, we find the following facts: in the medium and high signal-to-noiseratio (SNR) regions, compared with three typical PA parameters such β = 0.1, 0.5, and 0.9, the optimal PA shows a substantial SR performance gain with maximum gain percent up to more than 60%. Additionally, as the PA factor increases from 0 to 1, the achievable SR increases accordingly in the low SNR region whereas it first increases and then decreases in the medium and high SNR regions, where the SR can be approximately viewed as a convex function of the PA factor. Finally, as the number of antennas increases, the optimal PA factor becomes large and tends to one in the medium and high SNR region. In other words, the contribution of AN to SR can be trivial in such a situation.

show abstract

Artificial-Noise-Aided Zero-Forcing Synthesis Approach for Secure Multi-Beam Directional Modulation

Cited by 61 publications

References 13 publications

WFRFT-Aided Power-Efficient Multi-Beam Directional Modulation Schemes Based on Frequency Diverse Array

WFRFT-Aided Power-Efficient Multi-Beam Directional Modulation Schemes Based on Frequency Diverse Array

SVD-Aided Multi-Beam Directional Modulation Scheme Based on Frequency Diverse Array

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

Contact Info

Product

Resources

About