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2018 Vol.37, Issue 6 Preview Page

Research Article

Performance analysis and verification of underwater acoustic communication simulator in medium long-range multiuser environment

중장거리 다중송신채널 환경에서 수중음향통신 시뮬레이터 성능 분석 및 검증

Heejin Park1
,
Donghyeon Kim1
,
J. S. Kim2∗
,
Hee-Chun Song3
,
Joo Young Hahn4
박 희진1
,
김 동현1
,
김 재수2∗
,
송 희천3
,
한 주영4
1한국해양과학기술원-한국해양대학교 해양과학기술전문대학원
2한국해양대학교 해양공학과
3Scripps Institution of Oceanography
4국방과학연구소
∗Corresponding Author
30 November 2018. pp. 451-456
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Abstract

UAComm (Underwater Acoustic Communication) is an active research area, and many experiment has been performed to develop UAComm system. In this paper, we investigate the possibility of modifying and applying VirTEX (Virtual Time series EXperiment) to medium long range MIMO (Multiple-Input Multiple-Output) UAComm of about 20 km range for the analysis and performance prediction of UAComm system. Since VirTEX is a time-domain simulator, the generated time series can be used in HILS (Hardware In the Loop Simulation) to develop UAComm system. The developed package is verified through comparing with the sea-going FAF05 (Focused Acoustic Field 2005) experimental data. The developed simulator can be used to predict the performance of UAComm system, and even replace the expensive sea-going experiment.

Keywords
Adaptive passive time reversal
VirTEX (Virtual Time series EXperiment)
Inter-channel ICI (Interference)
Underwater acoustic communication system

최근 장거리 수중음향통신 연구가 활발하게 진행되고 있다. 장거리 수중음향통신 연구를 위한 해상실험은 해양환경의 영향을 크게 받고 높은 비용과 많은 시간이 소요된다. 따라서 장거리 환경에서 수중음향통신 시스템의 성능을 예측하고 검증하기 위한 시뮬레이터에 대한 연구가 필요하다. 본 논문에서는 장거리 수중음향통신 시뮬레이터의 개발을 목적으로 중장거리 다중송신환경에서 수중음향통신 시뮬레이터로서 VirTEX(Virtual Time series EXperiment)의 성능을 분석하고, 해상 실험 결과와 비교 검증하였다. 송신 신호는 탐침을 위한 Chirp신호와 16QAM 방식으로 변조된 통신 신호를 사용하였다. VirTEX를 통해 수신 신호를 모의하고 다중송신환경에 의해 발생하는 채널 간 간섭을 적응 수동형 시역전을 이용하여 보상하여 통신 성능을 분석하였다. 또한 2005년 7월 이탈리아의 Elba island 북쪽 해역에서 수행한 FAF05(Focused Acoustic Field 2005) 실험 데이터와 비교하여 이를 검증하였다.

키워드
적응 수동형 시역전
VirTEX(Virtual Time series EXperiment)
채널 간 간섭
수중음향통신
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Information
  • Publisher :The Acoustical Society of Korea
  • Publisher(Ko) :한국음향학회
  • Journal Title :The Journal of the Acoustical Society of Korea
  • Journal Title(Ko) :한국음향학회지
  • Volume : 37
  • No :6
  • Pages :451-456
  • Received Date : 2018-08-31
  • Revised Date : 2018-10-22
  • Accepted Date : 2018-11-22
  • DOI :https://doi.org/10.7776/ASK.2018.37.6.451
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