English  |  正體中文  |  简体中文  |  Items with full text/Total items : 43312/67235
Visitors : 2024814      Online Users : 2
RC Version 5.0 © Powered By DSPACE, MIT. Enhanced by NTU/NCHU Library IR team.
National Chung Hsing University Institutional Repository - NCHUIR > 工學院 > 通訊工程研究所 > 依資料類型分類 > 碩博士論文 >  適用於多輸入多輸出單載波分頻多重存取系統之迭代多用戶偵測

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/153923

標題: 適用於多輸入多輸出單載波分頻多重存取系統之迭代多用戶偵測
Iterative Multiuser Detection for MIMO SC-FDMA Systems
作者: 楊穎穆
Yang, Ying-Mu
Contributors: 翁芳標
通訊工程研究所
關鍵字: 單載波分頻多重存取;多輸入多輸出;多用戶;空頻編碼;階層式正交晶格偵測器;渦輪碼
SC-FDMA;MIMO;Multiuser;SFBC;LORD;Turbo codes
日期: 2013
Issue Date: 2013-11-19 12:31:49 (UTC+8)
Publisher: 通訊工程研究所
摘要: 在現今無線傳輸上,隨著多媒體服務不斷的增加需求,多輸入多輸出 (Multiple Input Multiple Output, MIMO) 的技術在通過多種標準下,以提高資料傳輸速率和穩固其鏈路。尤其在3GPP長期演進技術 (Long Term Evolution, LTE) 中,已是常用的方法。並且結合採用單載波分頻多重存取 (Single Carrier Frequency Division Multiple Access, SC-FDMA) 為其上行鏈路傳輸技術,以達到對於資料傳輸速率與系統效能的需求。因單載波分頻多重存取技術結合了正交分頻多重存取 (Orthogonal Frequency Division Multiple Access, OFDMA) 的良好特性,並且相較之下具有較低的峰值功率比 (Peak-to-Average Power Ratio, PAPR)。本篇論文主要是研究多用戶(Multiuser) 在頻率選擇衰減通道下,採用空頻區塊編碼 (Space-Frequency Block Coding, SFBC),在接收機架構上,使用階層式正交晶格偵測器 (Layered ORthogonal lattice Detector, LORD) ,以減少其搜尋複雜度,並結合渦輪碼 (Turbo Codes) 的多輸入多輸出單載波分頻多重存取系統。且利用最大事後機率 (Maximum A Posteriori, MAP) 所提供之外部資訊 (Extrinsic Information) 作為多用戶干擾消除。在不同編碼方式下,模擬本論文提出之演算法在上行鏈路的錯誤率表現。
With the increasing demand of multimedia services in wireless transmission nowadays, Multiple-Input Multiple-Output (MIMO) technologies are adopted in many standards to enhance the data rate and the link robustness. Among others, in 3GPP LTE (3rd Generation Partnership Project Long Term Evolution), it has been a common method. And the combination of the SC-FDMA modulation scheme for the uplink transmission scheme, to approach the demand for data transmission rates and error performance. Because of, SC-FDMA (Single Carrier Frequency Division Multiple Access) combines the desirable characteristics of OFDMA with the low PAPR (Peak-to-Average Power Ratio) of single-carrier transmission schemes. In this thesis, we using the Space Frequency block code (SFBC) applied on each transmitted block for the multiuser scenario. At receiver side, in order to reduce the search complexity, we can be used the Layered ORthogonal lattice Detector (LORD) algorithm, and combines the Turbo codes for MIMO SC-FDMA systems. Then utilize the Extrinsic Information from Maximum A Posteriori (MAP) decoder to cancel the Multiple Access Interference (MAI). Simulations for an uplink scenario assess the proposed algorithms in several situations.
Appears in Collections:[依資料類型分類] 碩博士論文

Files in This Item:

File SizeFormat
index.html0KbHTML175View/Open


 


學術資源

著作權聲明

本網站為收錄中興大學學術著作及學術產出,已積極向著作權人取得全文授權,並盡力防止侵害著作權人之權益。如仍發現本網站之數位內容有侵害著作權人權益情事者,請權利人通知本網站維護人員,將盡速為您處理。

本網站之數位內容為國立中興大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用。

聯絡網站維護人員:wyhuang@nchu.edu.tw,04-22840290 # 412。

DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU/NCHU Library IR team Copyright ©   - Feedback