English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28611/40649
Visitors : 632844      Online Users : 75
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/28195

Title: Multi-Rate De-spreading Code
Authors: Jia-Chyi Wu;Chi-Min Li;Han-Way Chou
Contributors: NTOU:Department of Communications Navigation and Control Engineering
Keywords: DS-CDMA;Walsh Code;Gold Code;Multiple Access Interference (MAI);Sub-Spreading Code
Date: 2007-07-02
Issue Date: 2011-10-21T02:36:10Z
Publisher: Wireless and Optical Communications Networks, 2007. WOCN '07. IFIP International Conference on
Abstract: Abstract:An efficient methodology to construct direct sequence Code Division Multiple Access (DS-CDMA) de-coding scheme has been investigated. System correlation performance is provided and analyzed. Since the perfect orthogonal codes, such as Walsh code, are difficult to obtain massively in conventional DS-CDMA system. To increase the number of spreading code utilized in system, we usually adopt sub-orthogonal codes, such as Gold sequences. Although the number of codes is extensively increased, the Multiple Access Interference (MAI) problem has to be treated more carefully. Especially while lots of users access the DS-CDMA system at the same time. In this study, we proposed a CDMA de-spreading scheme worked in receiver part. The MAI can be treated efficiently in the proposed multi-rate de-spreading scheme.
Relation: pp.1-5
URI: http://ntour.ntou.edu.tw/handle/987654321/28195
Appears in Collections:[通訊與導航工程學系] 演講及研討會

Files in This Item:

File Description SizeFormat

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


著作權政策宣告: 本網站之內容為國立臺灣海洋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,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback