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

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

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基于SDR的快跳频通信系统方案及实验

学术通信 | 更新时间：2024-06-05

- 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
- 通信学报 2022年43卷第8期页码：231-238
- 作者机构：
- 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" ]
- 基金信息：
  
  国家重点研发计划基金资助项目;The National Key Research and Development Program of China(2019YFB1706800)
- DOI：10.11959/j.issn.1000-436x.2022155
  中图分类号： TN914.41
- 网络出版日期：2022-08，
  
  纸质出版日期：2022-08-25
- 稿件说明：
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文成玉, 廖聪慧, 熊航, 等. 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, et al. Scheme and experiment of fast frequency hopping communication system based on SDR[J]. Journal on communications, 2022, 43(8): 231-238.
文成玉, 廖聪慧, 熊航, 等. 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. DOI： 10.11959/j.issn.1000-436x.2022155.

Chengyu WEN, Conghui LIAO, Hang XIONG, et al. Scheme and experiment of fast frequency hopping communication system based on SDR[J]. Journal on communications, 2022, 43(8): 231-238. DOI： 10.11959/j.issn.1000-436x.2022155.

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。

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.

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