Directional amplitude backscatter modulation with suppressed Doppler based on rotating resonant loop [PDF]
Scientific Reports, 2022 The directional amplitude backscatter modulation with suppressed Doppler is demonstrated based on the scattering from a symmetrically rotating resonant loop. The concept is studied theoretically and experimentally with perfectly compatible results.
Ashkan Azarfar +2 more
doaj +2 more sources
Directional Modulation-Enhanced Multiple Antenna Arrays for Secure and Precise Wireless Transmission [PDF]
Sensors, 2019 Directional modulation (DM) technique has the ability to enhance the physical layer security (PLS) of wireless communications. Conventional DM schemes are usually based on a single antenna array with the basic assumption that eavesdroppers (Eves) and ...
Wei Zhang +4 more
doaj +2 more sources
Low-Complexity Joint Phase Adjustment and Receive Beamforming for Directional Modulation Networks via IRS [PDF]
IEEE Open Journal of the Communications Society, 2022 Intelligent reflecting surface (IRS) is a revolutionary and low-cost technology for boosting the spectrum and energy efficiencies in future wireless communication network. In order to create controllable multipath transmission in the conventional line-of-
Rongen Dong +5 more
doaj +2 more sources
Time-Modulated OFDM Directional Modulation Transmitters [PDF]
IEEE Transactions on Vehicular Technology, 2019 In this paper, directional modulation (DM) transmitters, designed for orthogonal frequency-division multiplexing (OFDM) wireless data transfer are proposed using time-modulated arrays. It is shown that by properly designing the switch controlling time sequences the proposed time-modulated OFDM DM systems exhibit promising features, such as 1) requires ...
Yuan Ding 0001 +3 more
openaire +3 more sources
Orthogonally Polarized Dual-Channel Directional Modulation Based on Crossed-Dipole Arrays [PDF]
IEEE Access, 2019 Directional modulation (DM) as a physical layer security technique has been studied based on the traditional antenna arrays; however, in most of the designs, only one signal is transmitted at one carrier frequency.
Bo Zhang, Wei Liu, Xiang Lan
doaj +2 more sources
Joint Beamforming and Phase Shift Design for Hybrid IRS and UAV-Aided Directional Modulation Networks [PDF]
Drones, 2023 Recently, intelligent reflecting surfaces (IRSs) and unmanned aerial vehicles (UAVs) have been integrated into wireless communication systems to enhance the performance of air–ground transmission. To balance performance, cost, and power consumption well,
Rongen Dong +6 more
doaj +2 more sources
Directional Modulation With Cooperative Receivers
IEEE Access, 2018 Directional modulation (DM) refers to a class of efficient techniques for enhancing the physical layer security of wireless communications. However, conventional DM approaches cannot guarantee the transmission security when eavesdroppers are located ...
Yanping Xiao +5 more
doaj +3 more sources
A Secure Satellite Transmission Technique via Directional Variable Polarization Modulation with MP-WFRFT [PDF]
AerospaceSatellite communications are pivotal to global Internet access, connectivity, and the advancement of information warfare. Despite these importance, the open nature of satellite channels makes them vulnerable to eavesdropping, making the enhancement of ...
Zhiyu Hao +5 more
doaj +2 more sources
Non-reciprocal elastic wave propagation in spatiotemporal periodic structures
New Journal of Physics, 2016 We study longitudinal and transverse wave propagation in beams with elastic properties that are periodically varying in space and time. Spatiotemporal modulation of the elastic properties breaks mechanical reciprocity and induces one-way propagation.
G Trainiti, M Ruzzene
doaj +2 more sources
Spatial and Directional Modulation Systems for Near-Field Secure Transmission [PDF]
SensorsThe proliferation of massive antenna arrays and the consequent intensification of near-field effects with 6G necessitate addressing critical security challenges in near-field communication environments.
Ji Liu +4 more
doaj +2 more sources