Vortex Wave Directional Modulation With Time-Dependent Phase Offset FDA

Changju Zhu

doi:10.1109/LCOMM.2022.3165122

2022-07-01

PRE

DOI：10.1109/LCOMM.2022.3165122

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摘要

En 中文

A direction-range-time dependent vortex wave directional modulation (DM) scheme based on the frequency diverse array (FDA) is proposed for secure transmission. We design the random frequency offset for the array element in a circular arc FDA, which generates the quasi-helical phase front and the irregular phase front at the specific range. In order that the time-variance phase front can maintain the helical phase characteristics at the desired range, according to the designed frequency offset function, we design a DM excitation signal with the specific time-variance phase offset for each array element. The direction-range-time dependent phase pattern is modulated into the vortex signal constellation for the desired transmission. Theoretical analyses and numerical simulations validate the effectiveness of our proposed approach with no artificial noise.

Keyword:

Security

Phased arrays

Time-frequency analysis

Antenna radiation patterns

Frequency modulation

Wireless communication

Azimuth

Vortex wave

directional modulation

frequency diverse array

secure transmission

期刊

IEEE Communications Letters

IF:

4.4

论文数:

1.3W

被引数:

2.2W

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