摘要
介绍了一种基于NI USRP与RTL-SDR的无线通信收发系统。分析了该系统的软件特性和硬件构架,以FM调制与解调方式来发送与接收音频信号为例,介绍了FM信号的正交调制解调算法,以NI USRP当作发射端,RTL-SDR当作接收端,通过搭建Simulink框图在射频段与PC端对信号进行处理并发送与接收,并给出了详细的实现过程和测试结果。从实验结果得出,此系统可以较好地发送并接收音频信号。
In this paper we introduce a wireless communication system based on NI USRP and RTL-SDR .Its software characteristics and hardware framework are analyzed .Taking FM modulation and demodulation method to send and re-ceive audio signal as an example ,using the digital quadrature modulation and demodulation algorithm ,NI USRP is used as transmitter ,RTL-SDR as receiver ,and the signal and data will be processed in Simulink block diagram in PC .The imple-mentation procedureand test results are presented .The experimental results show that the designed system can send the received audio signal better .
出处
《国外电子测量技术》
2017年第10期81-85,共5页
Foreign Electronic Measurement Technology
