DVB-C中载波同步的算法研究及其芯片实现

【作者】 林银芳；

【导师】 朱小富；

【作者基本信息】 浙江大学 ， 通信与信息系统， 2004， 硕士

【摘要】 数字高清晰度电视(Digital HDTV)是当今世界上最先进的图象压缩编码技术和数字传输技术的结合，是当今世界高技术竞争的焦点之一。数字视频广播(DVB)是欧洲170多个组织共同开发出的数字高清晰度电视标准，它主要由卫星广播(DVB-S)、地面广播(DVB-T)和有线电视(DVB-C)三部分组成。 本文探讨了数字视频广播有线电视(DVB-C)接收机中载波同步的实现算法及结构，并给出了芯片实现方案。 第一章首先概述了数字电视及其发展，接着重点介绍了DVB-C有线电视传输系统，并对专用集成电路(ASIC)设计的发展、流程及将来的趋势——SOC的设计技术作了概述。 第二章主要介绍了QAM数字调制解调技术和锁相环技术原理，是后续章节的理论基础。 第三章重点讨论了各种载波同步算法并分析各自的优缺点，然后提出DVB-C接收芯片中载波环的实现方案，并给出仿真性能曲线。 第四章给出载波同步在ASIC设计中的具体实现，包括结构划分、硬件设计、逻辑综合和验证等，最后讨论了面向综合的ASIC设计技巧和可测性设计。 本文的主要贡献在于分析研究了各种载波同步算法，提出适用于DVB-C传输系统的实现算法及结构，给出具体的ASIC实现，并结合实际经验讨论了面向综合的ASIC设计技巧和可测性设计。更多还原

【Abstract】 Digital HDTV (Digital High Definition Television) technology integrates the most advanced image compressed encoding technology and the digital transmission technology. It has become one of the focuses in the high-tech competitions. DVB is the digital HDTV standard that developed by more than 170 organizations in Europe. It mainly comprises satellite (DVB-S), terrestrial (DVB-T) and cable (DVB-C) digital television systems.This paper is about algorithms of carrier recovery used in DVB-C channel receiver system and its implementation in ASIC (Application Specific Integrated Circuit).The first chapter gives an overview of digital HDTV and its development, then focus on the DVB-C system, finally talks about the technology involved in ASIC.The second chapter makes an introduction of the fundamental theory of QAM modulation & demodulation, also briefly describes the basic principle of PLL.The third chapter discusses all kinds of algorithms of carrier recovery. After analyzing their characteristics and differences, it brings forward the algorithm & structure applicable for DVB-C system, followed by performance curve.The fourth chapter is the implementation part of carrier recovery in ASIC, including structure division, hardware design logic synthesis and verification. The ASIC design skills oriented to synthesis and DFT (Design for Test) are discussed in the end.The main contributions of this paper are proposing the algorithm and ASIC implementation scheme of carrier recovery applicable for DVB-C system. It also discusses the ASIC design skills for synthesis and DFT according to practical experiences.更多还原