ADSL PCI调制解调器及相关功能模块的设计实现

【作者】 李芃；

【导师】 李广军；

【作者基本信息】 电子科技大学 ， 信号与信息处理， 2001， 硕士

【摘要】 本论文对ADSL PCI MODEM硬件电路及各功能模块进行了详尽的论述，研究DMT编码理论并设计完成了ADSL PCI MODEM。论文首先引入了ADSL的基本概念，重点分析了ADSL标准，ADSL接口规范及ADSL的帧结构，对ADSL标准中所规定的DMT编码原理进行了研究并提出了实现方案。本文的第二部分进行ADSL PCI MODEM硬件电路的设计，在比较了多种芯片方案的基础上，提出了基于ITEX芯片组的系统解决方案，并实现了完整的ADSL PCI MODEM样机。本文的第三部分对ADSL专用芯片中均衡器（equalizer）和串行通讯接口模块UART进行了VHDL语言设计和仿真，并通过Matlab工具进行算法验证。文章的第四部分介绍了ADSL PCI MODEM的测试环境，测试过程和重要的测试数据。更多还原

【Abstract】 The mission of this project is designing the hardware circuit of ADSL PCI MODEM,researching Decrete Muti-Tone(DMT) coding method,putting forward the scheme of DMT and relative functional unit.This thesis is devided into four parts.The first part introduces the basic concept of ADSL,ADSL standard and interface regime,ADSL frame structure focusing on DMT theory and the method to design DMT circuit.The second part analyzes the difficulties to design ADSL PCI MODEM and compares the several current solutions.On the basis of ITEX ADSL chips solution,the paper puts forwards the hardware system design including every subsystem.In the third part of the thesis,equalizer of DMT coder and serial communication unit(UART) of ADSL core chip are been design and been verified with VHDL language Matlab tools.lt will do some benefits to develop ADSL core chip.At the last,the paper describes the test enviroment ,test procedure and induces some important test results.All the source code and circuit designing kit are attached in the appendix.更多还原