English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28588/40619
Visitors : 4115818      Online Users : 58
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/987654321/28776

Title: Direct Mapping OVSF-Based Transmission Scheme for Underwater Acoustic Multimedia Communication
Authors: Chin-Feng Lin;Jiang-Yao Chen;Ya-Ju Yu;Jung-Ting Yan;Shung-Hyung Chang
Contributors: NTOU:Department of Electrical Engineering
Keywords: OVSF;power assignment;underwater acoustic multimedia communication
Date: 2010
Issue Date: 2011-10-21T02:40:19Z
Publisher: Journal of Marine Science and Technology
Abstract: Abstract:Underwater communication networks are currently being developed for use in underwater control systems, underwater telemetry systems, and underwater image transmission systems. The transmission bandwidth and transmission rates of an underwater communication system are low, and its transmission delay is high. In this paper, we propose a direct mapping orthogonal variable spreading factor (OVSF)-based transmission system for underwater acoustic multimedia communication. An important feature of this transport architecture is that a power assignment mechanism, an OVSF scheme, a direct mapping strategy, an unequal error protection scheme, and adaptive modulation are employed for transmitting messages that can tolerate various bit error rates. For confirming the effectiveness of this transport architecture, we perform a simulation using measured data of a G.729 audio signal and a JPEG2000 image signal. The simulation results show that the proposed system can achieve maximum transmission data rates or minimum transmission power. In addition, the OVSF-based transport architecture is a feasible platform in underwater acoustic multimedia communication.
Relation: 18(3), pp.413-418
URI: http://ntour.ntou.edu.tw/handle/987654321/28776
Appears in Collections:[電機工程學系] 期刊論文

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