摘要
随着人工智能技术的发展,认知无线电开始从概念走向实际应用。作为感知和利用电磁空间的基础,正确识别通信信号的调制方式对后续的信号处理至关重要。目前相关的教学实践还主要停留在软件仿真模拟上,缺乏在实际环境中验证。针对此问题,以RTL-SDR为硬件平台,以TensorFlow为软件开发框架,采集真实的无线信号生成调制信号的数据集,基于卷积神经网络进行训练和测试构建了网络模型,并利用该模型对实时信号的调制方式进行了识别。该设计方案以真实信号作为处理对象,提高了学生的学习兴趣,强化了课程之间的关联,探索了数字信号处理和人工智能等相关课程的跨课程项目实践,有助于培养学生的综合能力。
With the development of artifi cial intelligence technology,cognitive radio has begun to move from concept to practical application.As the basis for sensing and utilizing electromagnetic space,correct identifi cation of the modulation mode of communication signals is essential for subsequent signal processing.At present,the relevant teaching practice still mainly stays on the software simulation,lack of verifi cation in the actual environment.In response to this problem,using RTL-SDR as the hardware platform and TensorFlow as the software development framework,real wireless signals are collected to generate a data set of modulated signals,and a network model is constructed based on convolutional neural network training and testing.The model further identifi es the modulation mode of the real-time signal.The practical scheme takes real signals as processing objects,and raises the interest of students.Strengthen the correlation between courses,explore the cross-curricular project practice of digital signal processing and artifi cial intelligence and other related courses,which will help cultivate students'comprehensive ability.
作者
张晓华
白娟
Zhang Xiaohua;Bai Juan(School of Electronic Engineering,North China University of Water Resources and Electric Power,Zhengzhou,450046,China;School of Information Engineering,North China University of Water Resources and Electric Power,Zhengzhou,450046,China)
出处
《中国现代教育装备》
2022年第19期19-22,共4页
China Modern Educational Equipment
基金
教育部高等教育司2021年第一批产学合作协同育人项目“引入RT-thread的一流本科课程《‘嵌入式系统’的建设和提升》”(编号:202101303022)
2021年河南省高等教育教学改革研究与实践项目“专创融合”助力电子信息类一流专业建设的探索与实践(编号:2021SJGLX410)华北水利水电大学一流本科课程建设基金项目“线上线下混合式一流课程《嵌入式系统》”(编号:2020-90)
华北水利水电大学2017年度校级教育教学改革项目“‘互联网+虚拟化’的教学模式研究与实践—以《嵌入式系统》课程为例”
华北水利水电大学2020年度示范性虚拟仿真实验教学项目“基于软件无线电平台的FM接收机虚拟仿真设计实验”。
