高速家用網路之電力線通訊傳輸模型

Power Line Communication Channel Model for High Speed Home Networking

陳志帆(Chi-Fan Chen)

指導教授 ： 馮蟻剛

國立臺灣大學/電機資訊學院/電機工程學研究所/碩士(2004年)

https://doi.org/10.6342/NTU.2004.00202

摘要

對近年來蓬勃發展的家庭網路而言，如何選擇傳輸媒介是項重要的課題。由於乙太網路必須大量佈線，而無線網路又易受建築結構影響，故以電力線作為網路傳輸媒介的相關研究逐漸受到重視。電力線家庭網路的好處是不用重新配置線路。然而由於家庭中所有電力插座都連接同一條電力線，等於將所有裝置都接在同一條傳輸媒介上，由於阻抗的不匹配與多重路徑容易產生深衰竭於通道特性頻譜中，或是雜訊的干擾影響電力線家庭網路的運作。

在本論文中，先對於家用網路與電力線的傳輸做基本的介紹，包含橋接的結構與輸配電流程，並針對現今一些電力線通訊的技術做概論，再介紹電力線的規格與一些電力裝置的轉移函數，以及動態時變性質與通道特性，引入家庭環境的電力線結構。

之後再由基本的特性阻抗的計算與量測，引入反射與穿透要素，進而對於分支結構的電力線網路做分析，再藉由納入多重路徑的因素，提出路徑選取上的要點與路徑權重參數的計算，藉由模擬結果與實際上的量測比較，以期對電力線的基本特性模型建立與量測有具體的概念，並對電力線成為一個通訊媒體有更深一層的認識。

關鍵字

電力線傳輸 ； 高速家用網路

並列摘要

As the home networks grow rapidly, different physical media in home networks will largely affect the structure and performance of home networking. Thus the choice of communication media for home networking is an important issue. Some disadvantages of the Ethernet and wireless solutions, such as the building re-wiring or obstruction problems, can be avoided by using the power line network structure. However, the performance of power line network will degrade because of the load mismatch issues, multi-path effect and other noise problems.

In this note, we first introduce the basic concepts of high-speed home networking and power line communication, including the structure of power line bridge and the process of transmission and distribution of data over power line systems. Then the current status of power line communication technology development will be described, and some basic knowledge for time-varying dynamic properties of the power line communication channels will be surveyed. Thirdly, we suggest a power line channel model for high speed home networking and analyze the power line communication network with branches about its basic parameters of characteristic impedance, transmission factor, and reflection factor. Finally, some rules of choosing propagation paths and calculating weighting factors are provided, and comparison of simulation results with the actual measurement results are made.

並列關鍵字

High Speed Home Networking ； Power Line Communication

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