基于SDR的快跳频通信系统方案及实验

doi:10.11959/j.issn.1000-436x.2022155

通信学报 ›› 2022, Vol. 43 ›› Issue (8): 231-238.doi: 10.11959/j.issn.1000-436x.2022155

• 学术通信 • 上一篇

基于SDR的快跳频通信系统方案及实验

文成玉, 廖聪慧, 熊航, 杜鸿

成都信息工程大学通信工程学院，四川成都 610225

修回日期:2022-08-01 出版日期:2022-08-25 发布日期:2022-08-01
作者简介:文成玉（1972- ），男，四川眉山人，成都信息工程大学副教授、硕士生导师，主要研究方向为无线通信技术与应用、网络通信技术、数字图像处理
廖聪慧（1998- ），女，四川资中人，成都信息工程大学硕士生，主要研究方向为通信与信息系统和通信信号分析
熊航（1997- ），男，四川万源人，成都信息工程大学硕士生，主要研究方向为QPSK通信系统、战术数据链系统
杜鸿（1963- ），男，陕西泾阳人，博士，成都信息工程大学副教授、硕士生导师，主要研究方向为无线通信技术与应用、通信与信息系统、通信信息分析和数字图像分析
基金资助:
国家重点研发计划基金资助项目(2019YFB1706800)

Scheme and experiment of fast frequency hopping communication system based on SDR

Chengyu WEN, Conghui LIAO, Hang XIONG, Hong DU

School of Communication Engineering, Chengdu University of Information Technology, Chengdu 610225, China

Revised:2022-08-01 Online:2022-08-25 Published:2022-08-01
Supported by:
The National Key Research and Development Program of China(2019YFB1706800)

摘要/Abstract

摘要：

为解决现有快跳频通信系统依赖卫星授时的问题，提出一种基于软件定义无线电（SDR）的快跳频方案。首先，采用真随机序列对调制信号执行跳频运算，并通过信道下变频、低通滤波和幅度峰值检测运算获得跳频表；其次，根据解跳后基带信号正交解调幅度峰峰值分布特性搜索精确起跳点；最后，对信号执行下变频并检查正交解调幅度峰峰值是否超过阈值，从而实现解跳。实验使用两台通用 SDR 设备，按照每个符号周期 4 跳的跳速，在有其他连续信号的实际信道中进行通信实验，验证了所提方案的有效性和适应性。

关键词: 跳频通信, 软件定义无线电, 最小相位频移键控, 解跳

Abstract:

A fast frequency hopping scheme based on SDR was proposed to solve the problem that the existing fast frequency hopping communication system relied on satellite timing.Firstly, a true random sequence was used to perform frequency hopping operation on the modulated signal in this scheme.And the frequency hopping table was obtained by channel down-conversion, low-pass filtering and amplitude peak detection operations.Secondly, the receiver searched for the precise starting point by the peak-to-peak distribution characteristics of the quadrature demodulation amplitude of the baseband signal after de-hopping.Finally, down-conversion was performed and the peak-to-peak amplitude of the quadrature demodulation was checked for exceeding the threshold value to achieve de-hopping for frequency hopping signals.The effectiveness and adaptability of the proposed scheme is verified by using two general-purpose SDR devices with a hopping rate of four hops per symbol period in a real channel with other continuous signals.

Key words: frequency hopping communication, software defined radio, minimum frequency-shift keying, de-hopping

中图分类号:

TN914.41

文成玉, 廖聪慧, 熊航, 杜鸿. 基于SDR的快跳频通信系统方案及实验[J]. 通信学报, 2022, 43(8): 231-238.

Chengyu WEN, Conghui LIAO, Hang XIONG, Hong DU. Scheme and experiment of fast frequency hopping communication system based on SDR[J]. Journal on Communications, 2022, 43(8): 231-238.

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基于SDR的快跳频通信系统方案及实验

Scheme and experiment of fast frequency hopping communication system based on SDR

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