基于MATLAB的QPSK通信系统仿真设计重要

摘要

随着移动通信技术的发展，以前在数字通信系统中采用FSK、ASK、PSK等调制方式，逐渐被许多优秀的调制技术所替代。本文主要介绍了QPSK调制与解调的实现原理框图，用MATLAB软件中的SIMULINK仿真功能对QPSK调制与解调这一过程如何建立仿真模型，通过对仿真模型的运行，得到信号在QPSK调制与解调过程中的信号时域变化图。通过该软件实现方式，可以大大提高设计的灵活性，节约设计时间，提高设计效率，从而缩小硬件电路设计的工作量，缩短开发周期。

环氧大豆油生产工艺关键词锌铝镁QPSK，数字通信，调制，解调，SIMULINK

Abstract爬墙式

As mobile communications technology, and previously in the adoption of digital cellular system, ASK, FSK PSK modulation, etc. Gradually been many excellent modulation technology substitution, where four phase-shift keying QPSK technology is a wireless communications technology in a binary modulation method. This article primarily describes 内置式永磁同步电机

QPSK modulation and demodulation of the implementation of the principle of block diagrams, focuses on the MATLAB SIMULINK software emulation in on QPSK modulation and demodulation the process how to build a simulation model, through the operation of simulation model, I get signal in QPSK modulation and demodulation adjustment process domain change figure. The software implementation, can dramatically improve the design flexibility, saving design time, increase efficiency, design to reduce the workload of hardware circuit design, and shorten the development cycle.

Keywords QPSK, Digital Communication,modulation,demodulation,SIMULINK蟾蜍粉

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