摘要
针对当前高校通信工程专业嵌入式课程实验教学硬件存在的问题,提出了一种开放式通信教学实验系统。该系统基于软件无线电的硬件体系结构,主要由基带模块和中频模块组成。基带模块采用DSP+FPGA硬件方案,充分利用两种处理器的优势,灵活地实现通信方面的数字算法。中频模块采用数字化处理,有效地实现基带信号到中频模拟信号的转变。在此基础上,显示终端采用Matlab软件的图形化编程工具编写应用程序,用户可通过显示终端控制实验系统的操作,根据预设实验项目进行配置,实现相应的无线通信系统。整个实验系统具有通用性、开放性和层次性的特点,可满足通信专业嵌入式技术实验教学的要求。
An open communication teaching experiment system was proposed to solve experimental teaching hardware problems of embedded courses of communication engineering in colleges and universities.The system,based on software radio hardware architecture,was mainly composed of the base-band module and IF module.The base-band module using DSP＋FPGA hardware solutions made full use of the advantages of the two processors and implemented flexibly communication digital algorithms,while the IF module,based on digital processing,could effectively change the baseband signal to IF analog signal.The graphical programming tools of MATLAB software was used in the display terminal to write applications.By operating the display and control terminal,users can configure according to projects of preinstalled experiment and realize the appropriate wireless communication system.The entire experimental system is universal,open,and hierarchical,so it can meet the requirements of experimental teaching with the embedded technology in communication.
出处
《实验室研究与探索》
CAS
北大核心
2012年第3期55-58,共4页
Research and Exploration In Laboratory
关键词
实验教学
DSP
嵌入式技术
软件无线电
experimental teaching
DSP
embedded technology
software radio
