基于二维平面相控阵的方向调制技术

Directional Modulation Technology Based on Two-dimensional Planar Phased Array

方向调制(Directional Modulation)技术能够在无线通信物理层实现信息的安全传输。本文研究了基于平面相控阵的方向调制技术,首先通过增强型粒子群算法优化天线阵元相位,在此基础上,发射端发射正交相移键控(Quadrature Phase Shift Keying,QPSK)信号。在期望方向接收机无失真解调QPSK信号,非期望方向QPSK信号严重畸变,因而在无线通信的物理层实现了信息的安全传输。

Directional modulation technology ensures secure transmission of information on the physical layer of the wireless communication.In this paper,the directional modulation technology based on planar phased array is studied.Firstly,the phase of the antenna element is optimized by the enhanced particle swarm optimization algorithm.On this basis,the transmitting terminal transmits the quadrature phase shift keying signal.Then the receiver demodulates the QPSK signal without distortion in the desired direction,and the undesired direction QPSK signal is severely distorted.So the physical layer of the wireless communication realizes the secure transmission of information.