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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/28457

Title: Design and Implementation of an All-Digital Real-Time Underwater Acoustic Transceiver Using Digital Signal Processors
Authors: Fu-Sheng Lu;Ching-Hsiang Tseng;Bin-Chong Wu
Contributors: NTOU:Department of Electrical Engineering
國立臺灣海洋大學:電機工程學系
Keywords: underwater acoustic communication;direct-sequence spread spectrum;delay-locked loop;synchronization;decision-feedback equalizer;digital signal processor
Date: 2008
Issue Date: 2011-10-21T02:37:38Z
Publisher: Journal of Marine Science and Technology
Abstract: Abstract:In this paper, an all-digital transceiver for real-time underwater acoustic (UWA) communications is developed using digital signal processors (DSPs). The design of the transceiver is based on the direct-sequence spread-spectrum (DS/SS) modulation scheme, in which the timing synchronization is efficiently achieved by employing a sliding correlator and a modified noncoherent delay-locked loop for code acquisition and tracking, respectively. In addition, an equal-gain combiner (EGC) and an adaptive decision-feedback equalizer (DFE) are included in the receiver to enhance its interference rejection capability under multipath fading environments. Several real-time UWA transmission tests are conducted in an experimental water tank to evaluate the performance of the transceiver. The test data include plain text and simple image files. The test result shows that reliable real-time UWA communications can be accomplished by the proposed transceiver.
Relation: 16(1), pp.34-43
URI: http://ntour.ntou.edu.tw/handle/987654321/28457
Appears in Collections:[電機工程學系] 期刊論文

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