English  |  正體中文  |  简体中文  |  Items with full text/Total items : 2737/2828
Visitors : 3537698      Online Users : 26
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ir.lib.stu.edu.tw:80/ir/handle/310903100/1217

Title: OFDM通訊系統之通道估測與等化
Channel Estimation and Equalization for OFDM Communication Systems
Authors: 謝宗達
Tsung-Da Hsieh
Contributors: 李慶章;顏楠源
Ching-Chang Lee;Nan-Yang Yen
電腦與通訊研究所
Keywords: OFDM
Date: 2003
Issue Date: 2011-05-24 14:36:16 (UTC+8)
Publisher: 高雄市:[樹德科技大學電腦與通訊研究所]
Abstract: 隨著通信技術的不斷進步,從最初的有線通信到無線通信,為了能夠節省有限的頻寬資源、提供高質量資料通信服務並能抵抗頻率選擇性衰減通道(frequency selective fading channel),正交分頻多工(Orthogonal Frequency Division Multiplexing, OFDM)技術的推出解決許多問題。在傳輸通道中存在許多的干擾,為了提高系統性能。在本論文中,利用指標式通道估測法來估測,先在訊號中以週期性放入指標符號後傳送,接收端利用最小平方(Least Square)估測法則獲得通道頻率響應,再使用內插法求出每個子頻道的通道頻率響應,正確的還原訊號。在模擬中,我們將此方法運用在傳統等化器,也和Won Gi Jeon , Kyung Hi Chang與 Yong Soo Cho學者提出的等化方式做結合並比較其效能。
Following communication technology progress, from wired communication to wireless communication, in order to save the limited bandwidth resource, provide high quality communication service and resist frequency selective fading channel, OFDM technique is presented to solve many problems. There are a lot of interference exist in wireless channel. In order to enhance the system efficiency, a good channel estimator is necessary. In this thesis, we exploit pilot assisted channel estimation. Firstly, Pilot symbols are inserted into transmitted signal by periodic. In receiver, channel frequency response is obtained by utilizing least square method, and use interpolation method to get channel frequency response of subchannel and exact restore signal. In simulation, we make use of this method to traditional equalizer and compare efficiency which is presented by scholar of Won Gi Jeon , Kyung Hi Chang and Yong Soo Cho.
Appears in Collections:[電腦與通訊系(所)] 博碩士論文

Files in This Item:

File Description SizeFormat
OFDM通訊系統之通道估測與等化__臺灣博碩士論文知識加值系統.htm國圖95KbHTML715View/Open


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

 


無標題文件

著作權政策宣告:

1.

本網站之數位內容為樹德科技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,惟仍請適度,合理使用本網站之內容,以尊重著作權人之權益。商業上之利用,則請先取得著作權人之授權。
 
2. 本網站之製作,已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,請權利人通知本校護人員(clairhsu@stu.edu.tw),維護人員將立即採取移除該數位著作等補救措施。
 
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback