English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 64745/64745 (100%)
造訪人次 : 20502276      線上人數 : 476
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU 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://ir.lib.ncu.edu.tw/handle/987654321/9353


    題名: 使用慢速跳頻及差分相移鍵調變在部分頻帶雜訊干擾之相關性瑞雷衰落通道下的分集碼設計及效能;Diversity Codes for Slow Frequency Hopping/Differential Phase Modulation in Correlated Rayleigh Fading channels with Partial-Band Noise Jamming
    作者: 王瑞麟;Jui-Lin Wang
    貢獻者: 電機工程研究所
    關鍵詞: 部分頻帶雜訊干擾;分集計畫;慢速跳頻;瑞雷衰落通道;差分相移鍵;最大可能性;碼價值計算;slow frequency hopping;partial-band noise jamming;differential phase modulation;diversity scheme;Rayleigh fading;CSI
    日期: 2002-05-30
    上傳時間: 2009-09-22 11:46:00 (UTC+8)
    出版者: 國立中央大學圖書館
    摘要: 本論文針對一個簡單的分集計畫 [1],探討其經過慢速跳頻後在部分頻帶雜訊干擾與相關性瑞雷衰落通道環境下的效能。在傳送端,包含非線性區塊的編碼器,差分相移鍵的調變器,交錯混和器與慢速跳頻器。這裡考慮三種通道訊息狀態(NCSI、PCSI、CSI),並在接收端採用三種解碼器 (視通道訊息而定),逐字接收分集信號。分析與模擬此分集計畫在個別狀態下對部分頻帶雜訊干擾之抵抗效能,並對所有狀態之接收效能進行綜合比較。分集系統在CSI狀態下使用最大可能性分集解碼器對部分頻帶雜訊干擾具最大抵抗力。最後,利用聯合邊界作為碼價值計算的辦法,使用碼搜尋程序搜尋好的分集碼。 This thesis proposes a simple diversity scheme [1] through slow frequency hopping which operates on the correlated Rayleigh fading channels with partial-band noise jamming. The transmitter consists of a nonlinear block encoder, a symbol interleaver, a differential phase modulator, and a slow frequency hopper. Three kinds of channel side information (NCSI, PCSI, CSI) are considered in this thesis. Three different systems with or without using channel side information are developed to detect the received diversity signal codeword by codeword. Union bound and simulation are derived to assess the codeword error probability characteristics of the systems. It is concluded that the system using maximum likelihood diversity decoder and CSI offers the best resistance against partial-band jamming noise. According to the union bound as the code merit figure, useful short diversity codes are searched based on the code search procedure.
    顯示於類別:[電機工程研究所] 博碩士論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    0KbUnknown462檢視/開啟


    在NCUIR中所有的資料項目都受到原著作權保護.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋  - 隱私權政策聲明