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A Digital Acoustic Transceiver for Underwater Acoustic Communication수중 초음파 통신을 위한 디지털 음향 송신기

Other Titles
수중 초음파 통신을 위한 디지털 음향 송신기
Authors
박종원최영철임용곤김영길
Issue Date
1-9월-2005
Publisher
한국음향학회
Keywords
Underwater Acoustic Communicat; Adaptive Equalizer; Frame Synchronization
Citation
한국음향학회지(The Journal of the Acoustical Society of Korea, v.24, no.3E, pp 109 - 114
Pages
6
Journal Title
한국음향학회지(The Journal of the Acoustical Society of Korea
Volume
24
Number
3E
Start Page
109
End Page
114
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/1603
Abstract
In this paper, we present a phase coherent all-digital transceiver for underwater acoustic communication, which allows the system to reduce complexity and increase robustness in time variant underwater environments. It is designed in the digital domain except for transducers and amplifiers and implemented by using a multiple digital signal processors (DSPs) system. For phase coherent reception, conventional systems employed phase-locked loop (PLL) and delay-locked loop (DLL) for synchronization, but this paper suggests a frame synchronization scheme based on the quadrature receiver structure without using phase information. We show experimental results in the underwater anechoic basin at MOERI. The results show that the adaptive equalizer compensates frame synchronization error and the correction capability is dependent on the length of equalizer.
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