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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
國立臺灣海洋大學:電機工程學系
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

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