基于FPGA的QDPSK调制解调系统设计  

QDPSK Modulation and Demodulation System Design Based on FPGA

作　　者：陈莉[1] CHEN Li（Shaanxi Institute of Physics and Telecommunication Engineering,Shaanxi Institute of Technology,Hanzhong 723000,China）

机构地区：[1]陕西理工学院物理与电信工程学院,陕西汉中723000

出　　处：《电脑知识与技术》2012年第10期6662-6665,共4页Computer Knowledge and Technology

摘　　要：该文根据QDPSK调制解调系统基本工作原理,在QuartusⅡ下分别对组成系统所需的信号发生、串/并转换、差分编码、调制、解调、差分解码和并/串转模块进行分模块设计,并在此基础上进行QDPSK系统的拼装、仿真与设计。将QuartusⅡ下得到的仿真程序下载到FPGA芯片上,用示波器测试系统输入输出波形,测试结果表明设计的QDPSK调制解调系统能正确工作。According to QDPSK demodulation system basic working principle,the paper introduced the signal system,series / parallel conversion,differential coding,modulation,demodulation,decoding and differential and / serial conversion by using QuartusⅡsoftware,on this basis the assembly and QDPSK system was assembled,simulated and design.the simulation program was downloaded to the FPGA chip,all the points output waveform of system was tested With an oscilloscope,the test results show that the design QDPSK demodulation system can work properly.

关 键 词：四相差分相位键控 QuartusⅡ FPGA 调制解调系统 

分 类 号：TN911[电子电信—通信与信息系统;电子电信—信息与通信工程]