Journal of Systems Engineering and Electronics ›› 2022, Vol. 33 ›› Issue (6): 1108-1118.doi: 10.23919/JSEE.2022.000136

• ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Two-dimensional directional modulation with dual-mode vortex beam for security transmission

Changju ZHU(), Maozhong SONG(), Xiaoyu DANG(), Qiuming ZHU()   

  1. 1 College of Electronic Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
  • Received:2021-03-17 Online:2022-12-24 Published:2022-12-24
  • Contact: Maozhong SONG E-mail:zhu_cj@nuaa.edu.cn;smz108@nuaa.edu.cn;dang@nuaa.edu.cn;zhuqiuming@nuaa.edu.cn
  • About author:
    ZHU Changju was born in 1990. He is currently pursuing his Ph.D. degree at Nanjing University of Aeronautics and Astronautics, Nanjing, China. His research interests include directional modulation technology, physical security communication, communication and perception integration, design and reception of communication modulation signal, communication measuring and wireless localization. E-mail: zhu_cj@nuaa.edu.cn

    SONG Maozhong was born in 1962. He received his M.S. degree from Zhejiang University, Zhejiang, China. Currently he is a professor at Nanjing University of Aeronautics and Astronautics. His research interests include physical layer security communication, design and reception of communication modulation signal, directional modulation technology, communication and localization integration, satellite navigation and communication measuring. E-mail: smz108@nuaa.edu.cn

    DANG Xiaoyu was born in 1973. He received his Ph.D. degree from Harbin Institute of Technology, Harbin, China. Currently he is a professor at Nanjing University of Aeronautics and Astronautics. His research interests include deep space communication, communication measuring, UAV trunking/swarming communications, aeronautical telemetry, satellite positioning and navigation. E-mail: dang@nuaa.edu.cn

    ZHU Qiuming was born in 1979. He received his Ph.D. degree from Nanjing University of Aeronautics and Astronautics, Nanjing, China. Currently he is a professor at Nanjing University of Aeronautics and Astronautics. His research interests include UAV communication and big data processing, channel measurement and simulation, intelligent communication and deep space telemetry, tracking and command communication system. E-mail: zhuqiuming@nuaa.edu.cn
  • Supported by:
    This work was supported by the National?Natural?Science?Foundation of?China (62031017; 61971221) and the Aeronautical Science Foundation of China (201901052001).

Abstract:

A two-dimensional directional modulation (DM) technology with dual-mode orbital angular momentum (OAM) beam is proposed for physical-layer security of the relay unmanned aerial vehicle (UAV) tracking transmission. The elevation and azimuth of the vortex beam are modulated into the constellation, which can form the digital waveform with the encoding modulation. Since the signal is direction-dependent, the modulated waveform is purposely distorted in other directions to offer a security technology. Two concentric uniform circular arrays (UCAs) with different radii are excited to generate dual vortex beams with orthogonality for the composite signal, which can increase the demodulation difficulty. Due to the phase propagation characteristics of vortex beam, the constellation at the desired azimuth angle will change continuously within a wavelength. A desired single antenna receiver can use the propagation phase compensation and an opposite helical phase factor for the signal demodulation in the desired direction. Simulations show that the proposed OAM-DM scheme offers a security approach with direction sensitivity transmission.

Key words: directional modulation (DM), orbital angular momentum (OAM), physical-layer security, directional sensitivity