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dc.contributorChih-Peng Fanen_US
dc.contributorTsung-Han Tsaien_US
dc.contributor.advisorYin-Tsung Hwangen_US
dc.contributor.authorChen, Jyun-Liangen_US
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dc.description.abstract隨著消費者對於網路頻寬的需求提升,以至於光纖通訊的發展日益精進,從長途傳輸逐漸佈局至短距離傳輸。下一個世代的被動光網路10GEPON與10GGPON雖可透過增加光電元件的頻寬,達到更高的傳輸資料量,但需付出更大的成本。因此透過正交分頻多工技術,在不改變的光電傳輸架構下,即可提升光纖系統的資料量,並有效解決通道效應,進一步降低系統成本,實現光纖到家服務的目的。 本論文設計一高速傳輸的正交分頻多工被動光網路基頻實體層接收機,並定義正交分頻多工被動光網路的系統規格。其中,傳送機、通道模型與接收機以Matlab程式撰寫,並利用VPI transmissionMaker7.1進行系統驗證,最後接收機部分再改寫程式,以定點數模擬系統效能。本論文首先探討正交分頻多工被動光網路的光纖通道模型,並建立系統模擬環境,以Matlab撰寫程式進行模擬。接收機部分針對符元邊界粗調與符元邊界細調,進行演算法與電路架構的開發與研究。為因應系統高速傳輸欲追求十億位元級的資料傳輸量,本論文提出一套8/16平行化運算處理的接收機架構。 最後,在本論文提出的系統操作環境下,所設計的架構可以有效對抗色散失真、極化模態色散失真、非線性失真及元件雜訊等不完美效應。模擬結果也顯示所設計的正交分頻多工被動光網路系統在遭受這些不完美的通道效應下,最後能夠成功的將資料解調還原回來。zh_TW
dc.description.abstractAccording to the extended demand of network bandwidth from consumer, the developing of optical communication is gain ground day by day. The long haul transmit will be replace by short reach transmit gradually. The passive optical network 10GEPON or 10GGPON in next generation can increased the transmission data rate by add optical component, but it must pay the bigger cost. Therefore to use the orthogonal frequency division multiplex technology of optical communication, base on the original optical architecture, and it could advance data rate of fiber system and also solves channel distortion effectively. Further more it could reduce the system cost and realizes the goal that is fiber to the home service. This paper presents the OFDM PON baseband receiver design, and defines the system specification. The transmitter, channel model and receiver are programming by Matlab program and test by VPI transmissionMaker7.1 program. And final re programming receiver and fixed point simulation results. In this paper the first issue is the fiber channel model of OFDM PON, and establishes the system simulation environment by the Matlab program. The receiver designs include the coarse package detection and the fine package detection algorithm and circuit architecture design. To want in accordance to the system high speed transmission to pursue the 10Gbits transmission capacity, the present paper proposes a set of 8/16 parallel processing receiver construction. Finally, under the system operation environment which in the present paper proposed, designs the construction may resist the chromatic dispersion, polarization mode dispersion, nonlinear distortion and the component noise. The simulation result showed the OFDM PON can demodulation in suffers under these channel effects.en_US
dc.description.tableofcontents摘要----------------------------------------------------i Abstract------------------------------------------------ii 目錄----------------------------------------------------iii 表目錄--------------------------------------------------v 圖目錄--------------------------------------------------vi 第一章 緒論---------------------------------------------1 1.1 研究背景--------------------------------------------1 1.2 研究動機--------------------------------------------2 1.3 論文簡介--------------------------------------------2 1.4 論文組織介紹----------------------------------------3 第二章 光纖通訊接取網路正交分頻多工系統介紹-------------4 2.1 光纖接取網路(optical access network)--------------4 2.2 正交分頻多工技術(OFDM)----------------------------7 2.2.1 正交分頻多工系統----------------------------------8 2.2.2 正交分頻多工調變原理------------------------------10 2.2.3 保護區間及循環字首--------------------------------12 2.3 正交分頻多工光纖接取網路----------------------------14 2.3.1正交分頻多工光纖接取網路系統-----------------------15 2.3.2正交分頻多工光纖接取網路電光調變-------------------17 2.3.3正交分頻多工光纖接取網路光電調變-------------------19 2.4 本章總結--------------------------------------------20 第三章 通道模型-----------------------------------------22 3.1 色散失真(chromatic dispersion)--------------------23 3.2 極化模態色散失真(polarization mode dispersion)----25 3.3 光纖衰減(fiber attenuation)-----------------------29 3.4 非線性失真(nonlinear distortion)------------------29 3.5 檢光器雜訊(photodiode noise)----------------------32 3.6 雷射啁啾(laser chirp)-----------------------------33 3.7 取樣時間飄移(sampling frequency offset)-----------33 3.8 等效基頻訊號(equation baseband signal)------------33 3.9 本章總結--------------------------------------------35 第四章 系統規格-----------------------------------------37 4.1 光電架構設計----------------------------------------37 4.2 訊框結構設計----------------------------------------38 4.3 符元結構設計----------------------------------------39 4.4 前置碼設計(preamble design)-----------------------41 4.5 實體層參數設定--------------------------------------44 4.6 本章總結--------------------------------------------45 第五章 基頻傳送機架構-----------------------------------47 5.1 基頻傳送機架構設計----------------------------------47 5.2 攪亂器(scrambler)---------------------------------47 5.3 交錯器(interleaver)-------------------------------48 5.4 星座圖對應------------------------------------------48 5.5 實數正交分頻多工調變--------------------------------50 5.6 本章總結--------------------------------------------51 第六章 基頻接收機架構-----------------------------------52 6.1 基頻接收機架構設計----------------------------------52 6.2 封包偵測(packet detect)---------------------------52 6.2.1 符元邊界粗調演算法--------------------------------53 6.2.2 符元邊界粗調架構設計------------------------------58 6.2.3 符元邊界細調演算法--------------------------------65 6.2.4 符元邊界細調架構設計------------------------------67 6.3 快速傅立葉轉換(fast Fourier transform)------------72 6.3.1 快速傅立葉轉換演算法------------------------------72 6.3.2 快速傅立葉轉換架構設計----------------------------75 6.4 通道估測(channel estimation)----------------------80 6.5 頻域等化器(frequency domain equalizer)------------80 6.6 決策器(slicer)------------------------------------81 第七章 系統表現模擬-------------------------------------82 7.1 系統模擬結果----------------------------------------82 7.2 信號字元長度模擬------------------------------------90 第八章 結論與展望---------------------------------------95 參考文獻------------------------------------------------97zh_TW
dc.subjectpassive optical networken_US
dc.subjectorthogonal frequency division multiplexingen_US
dc.subjectbaseband receiveren_US
dc.titleBaseband receiver design for orthogonal frequency division multiplexing based passive optical networken_US
dc.typeThesis and Dissertationzh_TW
item.openairetypeThesis and Dissertation-
item.fulltextno fulltext-
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