曼彻斯特编码和解码的FPGA电路设计.docVIP

班 级 2-0712 学 号 本科毕业设计论文 题 目 曼彻斯特编码和解码的 FPGA电路设计 学 院 电子工程学院 专 业 电子信息工程 学生姓名 吴一龙 导师姓名 孙万蓉 摘要 在电信领域，曼彻斯特码是一种数据通讯线性码，它的每一个数据比特都是由至少一次电压转换的形式所表示的。曼彻斯特编码因此被认为是一种自定时码。自定时意味着数据流的精确同步是可行的。每一个比特都准确的在一个预先定义时间时期的时间中被传送。曼彻斯特编码已经被许多高效率且被广泛使用的电信标准所采用，例如以太网电讯标准. 曼彻斯特编码是一种超越传统数字传输的信道编码技术，由于其具有隐含时钟、去除了零频率信号的特性使得它在数据传输等领域中得到广泛的应用。 论文论述了曼彻斯特码的原理，介绍了其编码规则。对其特点和应用范围进行了说明。提出了曼彻斯特编解码方案，重点运用VHDL语言对电路进行了仿真。系统成功实现了曼彻斯特码数据传送的要求而且电路简单，性能稳定。 关键词：曼彻斯特码，差分曼彻斯特码，FPGA Abstract The Manchester code is one kind of data communication linearity codes. All its dada bits are shown by at least once voltage changing. Manchester code is called self-acting timing code. Self-acting timing means the feasibility of the precise synchronization of data stream. Each bit is transmitted accurately in the period that defined in advance. Manchester codes have been adopted by many telecom standards that have high efficiency and are been used widely, such as Ethernet communication standard. Manchester code is a coding technology for channel that exceeds the traditional data transmission. The characteristics that including crytic clock and eliminating the signals in zero frequency have made it been used in the detecting well of oil widely. The thesis mainly discusses the theory of the Manchester code and its coding rules, it also explains its characteristics and use range. The theory puts forward the Manchester coding and decoding proposals and conducts the hardware simulating on the synchronized signal pick-up module with the VHDL language. This proposal has successfully met the requirement of Manchester code date transfer and it is also sample in the circuit and stable in the capability. Keyword: Manchester Code Differential Manchester Code FPGA 目录 摘要 1 Abstract 2 第一章 绪论 1 1.1 项目背景 1 1.2 项目研究内容和任务 1 1.3 论文各部分主要内容 1 第二章 曼彻斯特码与差