基于LabVIEW的QPSK调制解调实验系统设计  

Design of the QPSK modulation and demodulation experimental system based on LabVIEW

作　　者：李蓉[1] 李善姬[1] 

机构地区：[1]延边大学工学院,吉林延吉133002

出　　处：《电子测试》2013年第2期41-43,54,共4页Electronic Test

摘　　要：LabVIEW是一个基于图形化编程的虚拟仪器软件平台,使用可视化技术建立良好的人机界面,是一个十分有效的虚拟仪器。本文主要介绍了数字通信中QPSK调制解调的原理,同时针对目前高等理工科院校实验室条件的不足,在LabVIEW8.6的平台上提出了一种应用于实验室的QPSK调制解调系统,采用LabVIEW中虚拟模块进行编程和实验。实验结果证明该系统能灵活地控制随机信号的QPSK调制与解调,同时学生通过观察实验结果能进一步了解QPSK调制的性能优势。LabVIEW is a virtual instrument software platform based on graphical programming, using visualization technology to establish a good man-machine interface, which is a very effective virtual instrument. This paper introduces the principle of the QPSK modulation and demodulation in the digital communication. At the same time, in view of the present insufficient conditions of university laboratory, the paper introduces a QPSK modulation and demodulation experimental system laboratory system in LabVIEW8.6 platform, using virtual modules in LabVIEW to program and experiment. The experimental results show the system can flexibly control the modulation and demodulation of the random signal QPSK, and students can further understand the advantages of the QPSK modulation through observing the experimental results.

关 键 词：LABVIEW QPSK 调制解调 

分 类 号：TN915.05-4[电子电信—通信与信息系统] TP274[电子电信—信息与通信工程]