English  |  正體中文  |  简体中文  |  Items with full text/Total items : 75369/75369 (100%)
Visitors : 25544193      Online Users : 394
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/987654321/71939

    Title: 用於雙向無線通訊之實體層相差網路編碼;Differential Network Coding at the Physical Layer for Two-Way Wireless Communications
    Authors: 李怡君;Li,Yi-Chun
    Contributors: 通訊工程學系
    Keywords: 中繼節點;放大轉發;解碼轉發;雙向中繼網路;實體層網路編碼;Relay node;Amplify-and-Forward;Decode-and-Forward;Two-Way Relay Networks;Physical Layer Network Coding
    Date: 2016-07-20
    Issue Date: 2016-10-13 14:07:54 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 無線通訊所需傳送的資料量越來越多,所以如何在越短時間內傳送相同資料量是重要的研究主題。兩終端節點藉由中繼節點同時傳送訊號至彼此的雙向無線通訊技術為近年來熱門的研究,而實體層網路編碼可以進一步提升頻寬效益。另一方面,相差編碼不需要傳送前導符元做通道估測,故不會造成速率損失,也是一個值得研究的通訊技術。


    除此之外,本論文提出了一個新的使用M-PSK訊號之解碼轉發架構,我們利用中繼節點在前兩個時間收到的訊號去估計參考訊號,再將估計的參考訊號用於目前訊號的判斷。由模擬結果顯示,我們提出的新架構有最好的錯誤效能。;Wireless communications is required to transmit quantity of data more and more. The important studying topic is how to transmit the same quantity of data in a shorter period of time. Recently, two-way wireless communication is a popular type of communication technology, where two terminal nodes transmit simultaneously to each other with the help of the relay node. The physical layer network coding can further improve bandwidth efficiency. On the other hand, differential encoding is not required to transmit pilot symbols for channel estimation, so it does not cause rate loss. It is also a communication technology worth studying.

    In this thesis, we study differential encoding for two-phase two-way wireless transmission with the single-relay for amplify-and-forward (AF) and decode-and-forward (DF). First, we compare existent techniques under the same conditions. We use M-PSK (phase-shift keying) modulation, and do computer simulations under different channel models. We also study three-phase two-way wireless transmission, and compared two-phase transmission with three-phase transmission based on the same transmission rate.

    Besides, in this thesis, we propose a new decode-and-forward scheme using M-PSK signals. This scheme uses the received signals at the relay in previous two time slots to estimate the reference signal, and then decide the current signal according to the estimated reference signal. Simulation results show that the proposed scheme has the best error performance.
    Appears in Collections:[通訊工程研究所] 博碩士論文

    Files in This Item:

    File Description 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