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

Cheng, Qi; Fusco, Vincent; Zhu, Jiang; Wang, Shilian; Wang, Fanggang

doi:10.1109/twc.2019.2934462

Cited by 49 publications

(35 citation statements)

References 48 publications

(93 reference statements)

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“…• [29]- [31]: From the {secrecy capacity definition in (21) to (23) in [29]; secrecy rate definition in (42) to (46) in [30]; secrecy rate definition in (60) to (65) in [31]}, it is realized that the authors assumed that legitimate and eavesdropping receivers sample the signals at the same time instant.…”

Section: Secure Reception Regions 'Propagate' In Range As Time Elamentioning

confidence: 99%

Physical Limitation of Range-Domain Secrecy Using Frequency Diverse Arrays

2020

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In this paper, the concept and recent development of exploiting frequency diverse array (FDA) and its variants for the physical-layer wireless security have been revisited and carefully examined. Following rigorous analytical derivation and illustrative simulations, the authors realize that the investigations performed in some recent works overlooked one critical issue facing the real-world applications, and system models established and used before were based on a limited assumption, i.e. that the legitimate and eavesdropping users at different ranges sample the signal waveforms at the same time instant. The limitation of this assumption results in their studies inconclusive. The authors aim to take the first step to divert research efforts and rectify the previous incomplete analyses. The authors argue that in the current technology base the FDA cannot secure a free-space wireless transmission in range domain, because the previously claimed 'secure reception region' propagates in range domain as time elapses. INDEX TERMS Directional modulation, frequency diverse array (FDA), physical-layer wireless security, radiation patterns.

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Section: Secure Reception Regions 'Propagate' In Range As Time Elamentioning

confidence: 99%

Physical Limitation of Range-Domain Secrecy Using Frequency Diverse Arrays

2020

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“…Moreover, those methods cannot achieve the neighbor security because of constraint on beamwidth. Furthermore, in [ 32 ], a synthesis scheme combined WFRFT and FDA DM was investigated to achieve power efficiency and the neighbor security. The contributions to physical layer security are solid.…”

Section: Related Workmentioning

confidence: 99%

“…Therefore, due to its power redistribution on the time-frequency plane, WFRFT technology can be regarded as a cryptographic method to further improve secrecy performance [ 28 , 29 , 30 , 31 ]. Furthermore, in [ 32 ], a synthesis scheme combining WFRFT and FDA DM was investigated to achieve power efficiency multi-beam secure communication. The contributions to physical layer security were promising.…”

Section: Introductionmentioning

confidence: 99%

Spatial Modulation and MP-WFRFT-Aided Multi-Beam Wireless Communication Scheme Based On Random Frequency Diverse Array

Gao

Qiu

Zhou

2020

Sensors

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A security-enhanced, spectral-efficient, and power-efficient multi-beam wireless communication scheme based on random frequency diverse array (RFDA) is proposed in this paper. (AN)-aided directional modulation (DM) schemes. Furthermore, with the aid of spatial modulation (SM) technology and cooperative legitimate users (LUs), we can transmit more information bits by the use of LU number informations than the single modulation symbols. Unlike conventional zero-forcing (ZF) beamforming for multi-beam DM, we design a FDA beamforming vector for each LU based on the minimum transmit power method. Numerical simulations show that (1) the proposed scheme is power-efficient compared to the conventional schemes, (2) the proposed scheme can transmit more information bits than the conventional schemes, and (3) the proposed scheme can ensure communication security when eavesdroppers (Eves) are proximal to LUs or even in same locations.

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“…Using the steering matrix in Equation 19, the precoding matrix P at the BS can be designed as [39,40]…”

Section: From a Signal Processing Perspectivementioning

confidence: 99%

“…SER, secrecy rate, and robustness are three key measurements to evaluate the security performance of DM systems [40][41][42]. Next, the SER, secrecy rate, and robustness of the proposed DM scheme will be analyzed.…”

Section: Metricsmentioning

confidence: 99%

Directional Modulation Technique Using a Polarization Sensitive Array for Physical Layer Security Enhancement

Zhang

et al. 2019

Sensors

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Directional modulation (DM), as an emerging promising physical layer security (PLS) technique at the transmitter side with the help of an antenna array, has developed rapidly over decades. In this study, a DM technique using a polarization sensitive array (PSA) to produce the modulation with different polarization states (PSs) at different directions is investigated. A PSA, as a vector sensor, can be employed for more effective DM for an additional degree of freedom (DOF) provided in the polarization domain. The polarization information can be exploited to transmit different data streams simultaneously at the same directions, same frequency, but with different PSs in the desired directions to increase the channel capacity, and with random PSs off the desired directions to enhance PLS. The proposed method has the capability of concurrently projecting independent signals into different specified spatial directions while simultaneously distorting signal constellation in all other directions. The symbol error rate (SER), secrecy rate, and the robustness of the proposed DM scheme are analyzed. Design examples for single- and multi-beam DM systems are also presented. Simulations corroborate that (1) the proposed method is more effective for PLS; (2) the proposed DM scheme is more power-efficient than the traditional artificial noise aided DM schemes; and (3) the channel capacity is significantly improved compared with conventional scalar antenna arrays.

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

Cited by 49 publications

References 48 publications

Physical Limitation of Range-Domain Secrecy Using Frequency Diverse Arrays

Physical Limitation of Range-Domain Secrecy Using Frequency Diverse Arrays

Spatial Modulation and MP-WFRFT-Aided Multi-Beam Wireless Communication Scheme Based On Random Frequency Diverse Array

Directional Modulation Technique Using a Polarization Sensitive Array for Physical Layer Security Enhancement

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