摘要
本文介绍了正交频分复用(OFDM)的基本原理,提出了一种适用于教学实验的OFDM系统方案,并实现了实验系统的软硬件。本系统的发送端和信道模拟在计算机上通过软件完成,然后将数据发送给实验硬件,接收功能则在基于DSP的实验硬件上完成,最终输出解调后的信号。实验者可设置发送端以及信道中的各种参数并观察其对整个系统性能的影响。该实验系统不但有助于学生更好地掌握OFDM技术,而且可以拓展为开发平台供进一步研究和开发。
This paper introduces the basic theory of Orthogonal Frequency Division Multiplexing（OFDM）, presents a scheme of OFDM system adapted to teaching experiment, and implements all software and hardware of this experiment system. The system transmission part and channel simulation is realized by the software on the computer, then the data is transmited to experiment hardware, the receiver is achieved by the experiment hardware based on the DSP, and the output signal is demodulated. The experimenter can set the parameter of the transmitter and channel, then observe the affection of the parameter to the system performance. This experiment system is not only useful for students to grasp OFDM technology, but also for the research and development platform further.
出处
《电气电子教学学报》
2006年第5期65-68,共4页
Journal of Electrical and Electronic Education
基金
2006年国家教育部高等理工教育教改与实践项目"国家工科电工电子教学基地<通信原理>双语教学课程建设"(项目编号:416)
2005年江苏省教育厅教改研究项目"‘通信原理’精品课程建设实践和研究"支持
