基于高速信道和USB接口数据传输技术的研究

【作者】 刘蓉；

【导师】 戴在平；

【作者基本信息】 华侨大学 ， 电工理论与新技术， 2003， 硕士

【摘要】 通信，简言之就是信息传输。通信是自有人类社会以来须臾不能离的生存手段。随着社会的进步，贸易的开展，交通的发达，特别是战争的频繁发生，通信方式不断增多，技术日益进步，展望未来，通信更节时缩距，信息交流巨增，地球变为地球村，成为电子工业领域中的闪亮增长点。 现代通信的主要标志是通信技术和数字信号处理技术，计算机技术的融合。由于大量采用计算机技术和信号处理技术，并有大规模集成电路的支撑，在通信领域取得的许多突破性的发展，为信息化社会提供了物理技术基础。 本文研究了现代通信领域中涉及的几个主要问题，并结合了近年来涌现的新技术。第二章介绍了信道编码及信道均衡的基本原理，主要针对GMSK调制信号的特点和GMSK码复信号调制进行了仿真，引出了信道均衡的问题。第三章进一步引申第二章的内容，采用了一种复神经网络的自适应均衡的方法，通过比较GMSK和4-QAM信号的均衡结果，表明这种方法对GMSK信号通过复信道均衡的有效性，并且所采用的结构可以节省硬件资源。第四章介绍了采用Verilog HDL语言设计USB IP Core，分析了时序设计要点。本设计可以对主机发送的标准设备请求，返回设备描述符、传送数据等操作，并在Maxplus Ⅱ环境下进行了波形仿真和时序分析，时序仿真满足设计要求。在介绍虚拟仪器及其开发环境LabVIEW的基础上，分析了利用实现TCP远程通信，从而实现人机之间进行信息交换以及通过网络进行信息交换，并实现远程测控功能。同时以实现信道均衡LMS算法为例介绍了LabVIEW调用Matlab程序代码的途径，实践证明，该方法高效、易行，是扩展LabVIEW功能的一条很好的途径。 现代通信涉及的面很广，本课题只分析和讨论其中一些重要领域的技术问题，力图通过这些研究，掌握技术发展，适应迅速发展的信息技术革命。更多还原

【Abstract】 To be brief, communication is information transmission. With the progress of society, commerce expansion and traffic development, especially the frequent occurrence of the war, the ways to communicate is growing and the technique is increasingly updated. Looking forward to the future, communication will still save time and shorten distance. The exchange of information will greatly increase.The sign of modern communication is the amalgamation of techniques in communication, digital signal processing and computer. A lot of breakthroughs have been achieved in the communication field because of adoption of computer and signal processing techniques and dependence on LSI. It provide physical technique basis for information society.This dissertation studies several main problems in modern communication combining with the newly arisen techniques. In chapter 2 the principle of modulation techniques and channel equalization are introduced. Simulation results are presented to illuminate the characters of GMSK modulation signal. Then the channel equalization problem is advanced. In chapter 3 a complex -valued neural network method for adaptive complex communication channel equalization is applied. After comparing the equalization result of GMSK and 4-QAM signal, it shows that the method is effective when GMSK signals pass the complex communication channel and such structure can save the hardware source. In chapter 4 an example about how to design USB control function IP Core is given to introduce the process of designing IP Core based on Verilog HDL. At the same time, the main points in the design are outlined. The project can send the Standard Device Requests, receive Standard Configuration Descriptor and transmit data etc. Waveform simulation and time analysis are finished on Maxplus II. After introducing Virtual Instrument and its developing environment, chapter 5 analyzes how to realize TCP remote communication base on LabVlEW to exchange information between human and computer and realize remote measurement and control function. At the same time, an example about LMS algorithm in channel equalization is applied to illuminate how to combine Matlab programming code in Lab VIEW. The result show that this method is efficient and easy and it’s a good way to expand Lab VIEW functions.Modern communication covers a lot of techniques, this dissertation only analyzes and discusses several important problems, trying to master the technology development through these research to adapt the rapid information technology revolution.更多还原