English  |  正體中文  |  简体中文  |  Items with full text/Total items : 76531/76531 (100%)
Visitors : 29701051      Online Users : 300
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version

    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/9616

    Title: 使用差異性錯誤保護架構之正交多工調變訊號;Orthogonally Multiplexed Modulation Signals with Unequal Error Protection
    Authors: 徐志祥;Chih-Hsiang Hsu
    Contributors: 電機工程研究所
    Keywords: 正交多工正交相位調變;正交多工正交振幅調變;差異性錯誤保護;最佳功率分配;里德-所羅門碼;OMOPM;OMOAM;Unequal Error Protection;Optimum
    Date: 2003-05-29
    Issue Date: 2009-09-22 11:51:49 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 本篇論文中對正交多工調變訊號作一探討研究,此正交多工調變訊號分為二種基本的型式分別為正交多工正交相位調變訊號[1]和正交多工正交幅調變訊號[2],而正交多工調變訊號包含現有已存在的調變型式,如正交多分頻多工(Orthogonal Frequency Division Multiplexing)及尚未發現的調變型式,論文中即針對正交多工調變訊號進行差異性錯誤保護架構的研究。我們在論文中提出差異性傳送功率和差異性編碼率二種架構。在論文中針對差異性傳送功率架構,推導出根據傳送資料重要性最佳的傳送功率分配方式並評估其系統效能趨勢。最後在差異性編碼率架構中,以不同碼率的里德-所羅門碼(Reed-Solomon Codes)對不同重要性的傳送資料進行不同程度的錯誤保護,並在相同的冗餘度下與使用相同編碼率比較,進一步去討論其效能。 Orthogonally Multiplexed Modulation signals are investigated in this thesis .The research focus is on the application of the unequal error protection to the Orthogonally-Multiplexed Modulation signals. First , the energy allocation among the component signals of Orthogonally Multiplexed Modulation is optimized by minimizing a modified symbol error function in AWGN channel and the scheme performance is observed. Second, the different R-S coding rate for the component signals of Orthogonally Multiplexed Modulation is used. The performance comparison between using the same R-S coding rate and using the different R-S coding rate Orthogonally Multiplexed Modulation system is presented.
    Appears in Collections:[電機工程研究所] 博碩士論文

    Files in This Item:

    File SizeFormat

    All items in NCUIR are protected by copyright, with all rights reserved.

    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 ©   - 隱私權政策聲明