A Synthesis-Free Directional Modulation Transmitter Using Retrodirective Array

Ding, Yuan; Fusco, Vincent

doi:10.1109/jstsp.2016.2605066

Cited by 50 publications

(42 citation statements)

References 36 publications

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“…The above mentioned types of DM architecture can be sorted into three categories, namely, radiation structure reconfigurable DM (A and B), excitation reconfigurable DM (C and F), and synthesis-free DM (D and E, as well as retrodirective DM in [22]). Their individual characteristics are summarised in Table 3.1.…”

Section: F Dm Using Digital Basebandmentioning

confidence: 99%

Directional-modulation-enabled physical-layer wireless security

Ding¹,

Fusco²

2017

Trusted Communications With Physical Layer Security for 5G and Beyond

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Section: F Dm Using Digital Basebandmentioning

confidence: 99%

Directional-modulation-enabled physical-layer wireless security

Ding¹,

Fusco²

2017

Trusted Communications With Physical Layer Security for 5G and Beyond

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“…To make sure that a given modulation pattern can only be received at certain desired positions, one solution is adopting a multi-path model, as shown in shown in Fig. 6.1, where signals via both LOS and reflected paths are combined at the receiver side [32,[86][87][88][89]. In this chapter, the typical two-ray multi-path model is studied based on an antenna array and a closed-form solution is provided.…”

Section: Introductionmentioning

confidence: 99%

Antenna Array Design for Directional Modulation

Zhang

Liu

Wang

2020

Lecture Notes in Electrical Engineering

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Directional modulation (DM) as a physical layer security technique to keep known constellation points in the desired directions, while making the points scrambled in other directions has been achieved. DM is normally applied on uniform linear arrays (ULAs) where the maximum spacing between adjacent antennas is a half wavelength of the frequency of interest in order to avoid spatial aliasing. In this thesis, to have a larger aperture and a higher spatial resolution given a fixed number of antennas, compressive sensing (CS) based sparse antenna array design for DM is formulated. Two practical scenarios are considered in the proposed design: robust design with model errors, and design with practical non-zero-sized antennas. To extend the frequency spectrum, multi-carrier based phased antenna array design for DM by using Inverse Discrete Fourier Transform (IDFT) is introduced. The modified Wideband Beampattern Formation via Iterative Techniques (modified WBFIT) method is proposed to reduce the peak to average power ratio (PAPR) to a given threshold for a given antenna array geometry. Moreover, polarisation states of signals are exploited on crossed-dipole array for DM to further increase the channel capacity. Based on a multi-path model, positional modulation design is proposed to make sure that only in desired locations the received signal can be recovered successfully, while in the positions around, the received modulation patterns are scrambled.

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“…Directional Modulation (DM), as a promising physical-layer secure wireless communication technique, has been rapidly developed in recent years [1]- [5]. It has the key property of transmitting digitally modulated signals whose waveforms are well preserved only along a pre-selected direction along which legitimate users locate in free space.…”

Section: Introductionmentioning

confidence: 99%

“…More recent efforts were directed at practical field applications. This resulted in 'synthesis-free' DM architectures, such as Fourier beamforming network enabled DM [8], antenna subset modulation arrays [9], [10], retrodirective DM arrays [5], and mode-pattern circular DM arrays [11]. Here the term 'synthesis-free' refers to the fact that no calculation of the DM array excitation vectors is required, as the DM functionality is directly enabled through carefully constructed DM transmitter hardware.…”

Section: Introductionmentioning

confidence: 99%

Time-Modulated OFDM Directional Modulation Transmitters

Ding

Fusco

Zhang

et al. 2019

IEEE Trans. Veh. Technol.

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In this paper directional modulation (DM) transmitters, designed for orthogonal frequency-division multiplexing (OFDM) wireless data transfer are proposed using time-modulated arrays (TMAs). It is shown that by properly designing the switch controlling time sequences the proposed time-modulated OFDM DM systems exhibit promising features, such as i) requires only one radio frequency (RF) chain, ii) the conventional efficient OFDM signal construction approach, i.e., by using inverse fast Fourier transform (IFFT) modules, can be adopted, iii) it is 'DM synthesisfree', meaning that there is no need to re-synthesize the array excitation vectors for different secure communication directions, different modulation schemes, and different DM power efficiencies; and iv) the trade-off between secrecy performance and power efficiency can be flexibly adjusted. Index Terms-Directional Modulation (DM), orthogonal frequencydivision multiplexing (OFDM), physical-layer wireless security, timemodulated array (TMA) Readers who are following DM developments may be aware of a number of recent DM works, which claim that the FDA concept (and its variants such as non-linear frequency increments and random subcarrier selections) can be incorporated into DM transmitters, achieving free-space wireless security in range-domain, e.g. the random-subcarrier-selection-based OFDM DM transmitters in [19] and some of the references wherein. However, in those works one important factor was overlooked, which is that 'FDA range-angle dependent beamforming patterns are also functions of time'. This

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A Synthesis-Free Directional Modulation Transmitter Using Retrodirective Array

Cited by 50 publications

References 36 publications

Directional-modulation-enabled physical-layer wireless security

Directional-modulation-enabled physical-layer wireless security

Antenna Array Design for Directional Modulation

Time-Modulated OFDM Directional Modulation Transmitters

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