English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 51920/87065 (60%)
造訪人次 : 8471553      線上人數 : 82
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/105819


    題名: 正交分頻多工系統於脈衝雜訊通道下之疊代式接收機設計
    其他題名: Iterative receiver design for OFDM systems in impulsive noise channels
    作者: 蔡松達;Tsai, Song-Da
    貢獻者: 淡江大學電機工程學系碩士班
    易志孝;Yih, Chi-Hsiao
    關鍵詞: 脈衝雜訊;疊代消除干擾;正交分頻多工系統;非線性消除;Impulsive Noise;Iterative Interference Cancellation;Blanking Nonlinearity;orthogonal frequency division multiplexing
    日期: 2015
    上傳時間: 2016-01-22 15:06:07 (UTC+8)
    摘要: 本論文中,我們探討正交分頻多工系統經過加成性高斯白雜訊通道下遇到脈衝雜訊(impulsive noise)對系統之影響,對此我們使用了非線性消除(Blanking nonlinearity)的方法來消除脈衝雜訊。此方法已經被廣泛應用於實際的正交分頻多工系統,以用來抑制通道傳送時所產生的脈衝雜訊,雖然非線性消除可以成功抑制脈衝雜訊但卻會造成通道載波間的相互干擾(intercarrier interference , ICI),為了提高訊號傳送的性能,本篇論文提出了疊代干擾消除(iterative interference cancellation )的方法,來有效的抑制脈衝雜訊與減少載波間的相互干擾。
      本篇論文模擬隨著改變疊代次數、載波點數、信號對噪音比以及信號對脈衝雜訊比,來觀察改變系統參數與通道環境對接收機效能之影響。
    In this thesis, the orthogonal frequency division multiple (OFDM) signals with blanking nonlinearity in impulsive noise channels is presented. Blanking nonlinearity has been widely used in practical OFDM systems to suppress impulsive noise at the expense of reducing signal power and generating intercarrier interference (ICI).
      To improve the performance of blanking nonlinearity element, we propose an iterative interference cancellation scheme which can effectively reduce the level of ICI caused by the blanking operation at the OFDM receiver. With adaptive blanking threshold for each iteration, the proposed iterative receiver design can converge to its best performance with only three iterations.
    Simulation results achieved by the proposed scheme significant improvement.
    顯示於類別:[電機工程學系暨研究所] 學位論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML41檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋