English  |  正體中文  |  简体中文  |  Items with full text/Total items : 69561/69561 (100%)
Visitors : 23704793      Online Users : 680
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/987654321/57086

    Title: 多重使用者正交分頻多工系統之資源配置技術研究;Study of Resource Allocationn for Multiuser OFDM Systems
    Authors: 陳永芳
    Contributors: 中央大學通訊工程系
    Keywords: 電信工程;正交分頻多工;正交分頻多重接取;資源配置;位元配置;波束合成;多重輸入輸出;空間多工;功率控制;長期演進技術;OFDM;OFDMA;resource allocation;bit loading;beamforming;MIMO;spatialmultiplexing;power control;LTE
    Date: 2009-09-01
    Issue Date: 2012-10-01 15:13:45 (UTC+8)
    Publisher: 行政院國家科學委員會
    Abstract: 在第四代行動通訊系統在所定高頻譜效率及高傳輸率的目標若要能達成,OFDMA、多天線傳輸、中繼站、及SDMA 傳輸技術將扮演極重要角色。因此在第一年的計畫中,我們將針對這些技術,做資源配置演算法設計。在第一年研究內容,共分為三個研究主題:於細胞式通訊系統使用Relay 的技術,我們將針對這問題做資源配置演算法設計,以求達到最佳傳輸容量的目的。在完成單天線傳輸模式下之配置演算法後,我們將延申先前之研究成果,在頻率複用造成之干擾通道下,設計多天線系統使用波束合成模式之資源配置演算法。最後,在MIMO 傳輸模式中,其中引人矚目為利用SVD 於MIMO 系統,我們將發展對應之子載波、功率及位元配置演算法,期使能比現存在方法能提供更佳效能或更低之運算複雜度。在第二年的執行內容中,主要是以LTE 做相關性的資源配置演算法設計。兩大研究主軸分別針對以Grassmannian Beamforming 技術為基礎之資源分配演算法設計,以及 LTE SC-FDMA 之資源配置之演算法設計。於前兩年之計畫執行內容,我們已將具有前景的規格進行資源配置的研究。第三年的研究則是將研究的方向延伸到一個確定的方向,主要研究項目針對LTE 或Wimax 進行適應性調變相關研究,研讀LTE 或WiMax 標準以建立模擬平台,最後延伸先前之研究成果,應用於LTE 或IEEE 802.16m 傳輸方式。 ; In 4G mobile communication systems, in order to achieve high capacity and high spectral efficiency, the technologies such as OFDMA, MIMO, relay, and SDMA play important roles for these goals. Therefore, we deal with the radio resource allocation algorithm designs for using these technologies in the investigation subject of the project. In the first year, there are three subjects we would like to investigate. We first consider developing resource allocation algorithm for OFDMA systems with relay in some optimum sense. Second, we extend the previous research result to develop the allocation algorithm for the deployment of multiple antennas with beamforming. Finally, SVD-MIMO is a promising technique for MIMO systems. There exists a paper dealing with the resource allocation problem for a SVD-MIMO OFDMA system. However, there are some problems in the proposed scheme. We are going to consider employing better beamforming scheme in the receiver and develop the associated subcarrier, power, and bit allocation algorithms. In the second year of the project, we focus on the LTE related resource allocation algorithm designs. We are going to develop the resource allocation algorithms regarding to Grassmannian beamforming-based technologies and the LTE SC-FDMA transmission mode. In the last year of the project, we focus on the study of the 4G standards in building up simulation platforms for the related algorithm development. We hope to develop the algorithms related to the transmission technologies described in the 4G standards. We would like to modify the previous research results to derive the algorithms or to design brand new algorithms for the 4G allocation problems and adaptive transmission. ; 研究期間 9808 ~ 9907
    Relation: 財團法人國家實驗研究院科技政策研究與資訊中心
    Appears in Collections:[通訊工程學系] 研究計畫

    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 ©   - Feedback  - 隱私權政策聲明