VDSL2系统关键技术的实现方法及MATLAB仿真

发布时间：2018-05-26 04:01

本文选题：MATLAB仿真 + VDSL2　；参考：《东南大学》2017年硕士论文

【摘要】：随着信息化时代的来临,人们对网络的需求也愈发的迫切,同时也对网络接入的速率及质量提出了越来越高的需求。近十年来数字用户线(DSL)接入技术一直是应用最广泛、最受运营商及用户欢迎的接入方式。数字用户线(DSL)技术是以电话线为介质,使用相对于语音业务较高的频段加入数字调制方式和较为先进的数字信号处理技术来提供高速率的固网接入。数字用户线(DSL)的核心是正交频分复用技术。本文针对公司的产品研发需求,对ITU-TG.993.2协议进行分析并确定第二代甚高速数字用户线路中关键算法的实现方法。主要内容如下:1、对ITU-TG.993.2协议进行分析,确定第二代甚高速数字用户线路(VDSL2)系统关键部分的实现方法和算法;2、在MATLAB软件中构建数据帧,对第二代甚高速数字用户线路系统(VDSL2)关键技术(编码解码、时钟同步、帧头同步、频域均衡、时域均衡、信道估计)的主要算法在MATLAB软件中分模块进行了仿真,给出仿真结果;3、串联各个模块以仿真整个通信系统的收发,完成整套系统中编解码、调制、信道估计、时域频域均衡等环节,分析并确认各算法的有效性。通过MATLAB仿真,可以为芯片后续的设计工作提供具体的硬件需求,在一定程度上指导芯片设计工作。
[Abstract]:With the advent of the information age, the demand for network is becoming more and more urgent. At the same time, the rate and quality of network access are increasingly demanding. Digital subscriber Line (DSL) access technology has been the most widely used and popular access method for operators and users in recent ten years. Digital subscriber Line (DSL) technology is based on telephone line, which uses digital modulation mode and advanced digital signal processing technology to provide high-speed fixed network access. The core of Digital subscriber Line (DSL) is orthogonal Frequency Division Multiplexing (OFDM). In this paper, the ITU-TG.993.2 protocol is analyzed and the implementation method of the key algorithms in the second generation very high speed digital subscriber line is determined according to the product R & D requirements of the company. The main contents are as follows: 1. This paper analyzes the ITU-TG.993.2 protocol, determines the implementation method and algorithm of the key part of the second generation very high speed digital subscriber line (VDSL2) system, and constructs the data frame in the MATLAB software. The main algorithms of VDSL2 (encoding and decoding, clock synchronization, frame head synchronization, frequency domain equalization, time domain equalization, channel estimation) are simulated in MATLAB software. The simulation results are given, each module in series is used to simulate the transceiver of the whole communication system, the coding and decoding, modulation, channel estimation and time domain frequency domain equalization are completed in the whole system, and the validity of each algorithm is analyzed and confirmed. Through MATLAB simulation, it can provide specific hardware requirements for the subsequent design of the chip, and guide the chip design to a certain extent.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN915.61

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