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研究生: 邱崇享
Chung-Hsiang Chiu
論文名稱: 以DSP實現電力線通訊傳收器
DSP Implementation of a Transceiver for Power Line Communications
指導教授: 陳逸民
Yih-Min Chen
口試委員:
學位類別: 碩士
Master
系所名稱: 資訊電機學院 - 通訊工程學系在職專班
Executive Master of Communication Engineering
論文出版年: 2014
畢業學年度: 102
語文別: 中文
論文頁數: 83
中文關鍵詞: 電力線通訊正交分頻多工
外文關鍵詞: Power Line Communications, OFDM
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  • 電力線通訊主要是透過電力線載波的方式進行資料傳輸,所以可利用
    現有的電力線路,可節省佈線上的花費。
    在本篇論文中,設計並且以Digital signal processing(dsp)實現了在電
    力線上通訊的軟體定義OFDM發射機與接收機。此平台由C6416 DSP Starter
    Kit(DSK)搭配FPGA 板、以及電力線類比前級組合而成。在發射機之訊
    號處理模組中設計高速迴旋碼編碼、訊號交錯、星座圖映射、反快速傅立
    葉轉換、循環字首置入和前導符碼置入等,而在接收機設計了訊號同步
    器、快速傅立葉轉換、通道估測、通道等化、硬式決策、訊號解交錯及通
    道解碼等。傳送之訊號頻段範圍1.91MHz 16.66MHz。


    Power Line Communications (PLC) has attracted much attention due to the wide availability of power distribution lines. PLC can transmit signal over the existing AC electrical wiring without building whole new network.
    In this thesis,we design and implement a software de ned OFDM transceiver over powerline on the dsp development platform. In this platform, we use C6416 DSP Starter Kit (dsk)、FPGA and PLC Analogy-Front-End (AFE). The transmitter includes high-rate convolutional encoder, signal interleaver, constellation mapper,Invers FFT, cyclic pre x inserter and preamble inserter. The receiver includes signal synchronizer, FFT, channel estimator, channel equalizer, hard decider, signal de-interleaver and channel decoder etc. Transmission bandwidth between 1:91MHz and 16:66MHz.

    中文摘要...................................................i ABSTRACT ................................................ii 謝誌.................................................... iii 目錄......................................................iv 圖目錄................................................... vi 表目錄................................................... x 一、緒論................................................. 1 1.1 研究動機與背景..........................1 1.2 章節簡介.............................. 2 二、電力線通訊簡介..........................................3 2.1 電力線通道特性..........................3 2.1.1 電力線通道阻抗........................3 2.1.2 電力線通道多重路徑效應.................4 2.1.3 電力線通道雜訊....................... 4 2.1.4 電力線通道負載變化.....................6 2.1.5 電力線長度衰減....................... 7 2.2 電力線通訊標準......................... 8 三、電力線通訊系統......................................... 9 3.1 PLC系統架構............................ 9 3.2 正交分頻多工............................ 10 3.3 迴旋碼................................. 13 3.4 腓特比解碼器............................ 14 3.5 訊號交錯............................... 15 3.6 星座圖映射............................. 19 3.7 快速傅立葉轉換........................... 21 3.8 循環字首................................ 22 3.9 前導符碼................................ 25 3.10 自訂規格電力線系統....................... 27 四、電力線通訊發射機與接收機實現.............................. 29 4.1 開發流程................................ 29 4.2 TI TMS320C6416 Dsk......................30 4.3 TI TMS320C6416 記憶體配置(Memory Maps).. 35 4.4 TI TMS320C6416週邊(Peripheral)介紹.......35 4.4.1 Enhanced Direct Memory Access (EDMA)控制器. 36 4.4.2 External Memory Interface (EMIF) ..... 37 4.4.3 計時器(Timer) ......................... 39 4.4.4 高速串聯埠介面(McBSPs) ................. 40 4.4.5 VCP(Viterbi-Decoder Coprocessor) ....42 4.5 TI DSP/BIOS 系統........................ 45 4.5.1 DSP/BIOS 的系統配置工具................. 46 4.5.2 即時分析物件.............................47 4.6 軟體設計及硬體實測驗証...................... 48 4.6.1 延遲相關器.............................. 50 4.6.2 峰值檢測器...............................51 4.6.3 訊號偵測器.............................. 52 4.6.4 演算法效能分析........................... 54 4.6.5 電力線通訊收發機實現成果................... 55 五、結論.................................................. 81 參考文獻.................................................. 82

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