應用於電力線通道之OFDM modem 實作
彭彥龍* 蘇賜麟**
國立成功大學電機工程系碩士班通訊與網路組
摘要
一般居家住宅的低壓電力線網路是一相當便利與低廉的通信媒介。以往應用於電力線網路多為低速率的控制，量測系統。本篇論文中，將針對寬頻電力線通道特性作資料整理、分析與實際量測；並且實現一個電力線通訊系統。我們採用正交分頻多工技術（Orthogonal Frequency Division Multiplexing；OFDM）的架構，並使用德州儀器公司所生產的TMS320C6211 DSP Chip（fixed-point DSP）來實現這個系統，所佔用的頻寬為192 kHz，傳輸速率為96 kbps。

Abstract

Low voltage electrical power distribution networks represent an attractive medium for digital communications. In this thesis we introduce and implement a power line communication system by Orthogonal Frequency Division Multiplexing (OFDM). We implement the power line modem by TI TMS320C6211 DSP. The transceiver runs at the bandwidth 192 kHz, and provides a data rate up to 96 kbps.

Abstract i
Contents ii
List of Figures iv
1 INTRODUCTION 1
1.1 Overview of Power Line Communications 1
1.2 Outlines 3
2 Characteristics of RPC Channel 4
2.1 Noises on Residential Power Line Channel 4
2.2 Impedance of Residential Power Line Channel 8
2.3 Attenuation of Residential Power Line Channel 10
2.4 Multipath on Residential Power Line Channel 13
2.5 The Linearity of Residential Power Line Channel 13
3 Design of Modulation and Demodulation 14
3.1 Features of Designed 14
3.1.1 Introduction 14
3.1.2 Problems of Designed System 15
3.2 Modulator 17

3.3 Demodulator 19
4 Implementation of Modem 23
4.1 Introduction 23
4.2 Introduction to TMS320C6211 23
4.2.1 Architecture 23
4.2.2 Key Features 25
4.3 The Modem Hardware Description 29
5 Conclusions 36
Bibliography 46

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