论文编号ZXX291 论文字数:12990,页数:40
摘要
随着数字技术的飞速发展和数字器件的广泛使用，多进制数字调制技术以其独具的特点，在数字视频广播、移动通信等领域占据主导地位，QPSK调制便是其中应用最为广泛的数字调制方式之一。本论文研究并实现了基于CPLD的QPSK调制器的设计。
本论文详细介绍了数字通信中的QPSK调制原理和过程，采用CPLD设计芯片技术对多进制数字通信技术的QPSK调制器实现进行了设计研究。通过改变程序中的参数，分析并仿真了四种基带信号的调制。
本文研究的数字调制的方法适应当前科学技术的发展与更新，具有一定的实用价值。该方案具有突出的灵活性和高效性，为设计者提供了多种可自由选择的设计方法和工具；在本设计中开发的CPLD目标板可为实验室的后续研究提供实用的研究平台。
关键词：CPLD，QPSK，VHDL，数字通信
ABSTRACT
Accompanying with the rapid development of digital technology and widespread use of the digital components， the M-ary digital modulation technique by its unique characteristics occupies the dominant position on digital video broadcast， mobile communication and so on. QPSK is one of the most widespread digital modulation methods. In the paper， a digital QPSK modulator based on CPLD is studied and implemented.
This paper introduces the principles and processes of QPSK modulation in detail and presents the design and realization of a QPSK modulator based on CLPD. The modulation of four types of baseband signals is presented in this paper， by changing the parameters of the in the programs.
The digital modulation method put forward in this paper is relatively new and achieving a high practicality. This plan provides a flexible and effective method for the designers. The CPLD target board designed in the research can be used as the hardware platform for other CPLD development subject in the Lab.
发表于 20:50
ZXX291 论文字数:12990,页数:40