The Journal of the Acoustical Society of Korea (한국음향학회지)

The Acoustical Society of Korea (한국음향학회)
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Performance analysis and verification of underwater acoustic communication simulator in medium long-range multiuser environment

중장거리 다중송신채널 환경에서 수중음향통신 시뮬레이터 성능 분석 및 검증

  • 박희진 (한국해양과학기술원-한국해양대학교 해양과학기술전문대학원) ;
  • 김동현 (한국해양과학기술원-한국해양대학교 해양과학기술전문대학원) ;
  • 김재수 (한국해양대학교 해양공학과) ;
  • 송희천 ;
  • 한주영 (국방과학연구소)
  • Received : 2018.08.31
  • Accepted : 2018.11.22
  • Published : 2018.11.30
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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.

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.

Keywords

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Fig. 1. The geometry of simulation.

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Fig. 2. Configuration of the transmitted signal packet.

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Fig. 3. Schematic diagram of multiuser communications using passive time reversal.

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Fig. 4. Constellation results using passive time reversal mirror. (a) VirTEX at user 1 (b) FAF05 at user 1[13] (c) VirTEX at user 2 (d) FAF05 at user 2[13] (e) VirTEX at user 3 ( f) FAF05 at user 3[13]

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Fig. 5. Constellation results using adaptive passive time reversal mirror. (a) VirTEX at user 1 (b) FAF05 at user 1[13] (c) VirTEX at user 2 (d) FAF05 at user 2[13] (e) VirTEX at user 3 ( f) FAF05 at user 3[13]

References

  1. H. C. Song, S. Cho, T. Kang, and W. S. Hodgkiss, "Long-range acoustic communication in deep water using a towed array," J. Acoust. Soc. Am. 129, 71-75 (2011). https://doi.org/10.1121/1.3554707
  2. T. Shimura, H. Ochi, and H. C. Song " Experimental demonstration of multiuser communication in deep water using time reversal," J. Acoust. Soc. Am. 134, 3223-3229 (2013). https://doi.org/10.1121/1.4818839
  3. S. H. Oh, G. H. Byun, and J. S. Kim,"Performance improvement of underwater acoustic communication using ray-based blind deconvolution in passive time reversal mirror" (in Korean), J. Acoust. Soc. Kr. 35, 375-382 (2016). https://doi.org/10.7776/ASK.2016.35.5.375
  4. K. H. Choi, S. H. Kim, J. W. Choi, H. S. Kim, and B. N. Kim,"Algorithm and experimental verification of underwater acoustic communication based on passive time reversal mirror in multiuser environment" (in Korean), J. Acoust. Soc. Kr. 35, 167-174 (2016). https://doi.org/10.7776/ASK.2016.35.3.167
  5. A. C. Singer, J. K. Nelson, and S. S. Kozat, "Signal processing for underwater acoustic communications," in IEEE Communications Magazine, 90-96 (2009).
  6. D. B. Kilfoyle and A. B. Baggeroer, "The state of the art in underwater acoustic telemetry," IEEE J. Ocean. Eng. 25, 4-27 (2000). https://doi.org/10.1109/48.820733
  7. S. I. Kim, G. F. Edelmann, W. A. Kuperman, W. S. Hodgkiss, and H. C. Song,"Spatial resolution of time-reversal arrays in shallow water," J. Acoust. Soc. Am. 110, 820-829 (2001). https://doi.org/10.1121/1.1382619
  8. H. C. Song, J. S. Kim, and W. S. Hodgkiss,"Crosstalk mitigation using adaptive time reversal," J. Acoust. Soc. Am. 127, 19-22 (2010). https://doi.org/10.1121/1.3280234
  9. F. Mosca, and T. Shimura,"Low-frequency acoustic source for AUV long-range communication," Mast Europe, 1-9 (2011).
  10. M. Siderius and M. B. Porter,"Modeling broadband ocean acoustic transmissions with time-varying sea surfaces," J. Acoust. Soc. Am. 124, 137-150 (2008). https://doi.org/10.1121/1.2920959
  11. J. S. Kim,"Virtual time series experiment (VirTEX) simulation tool for underwater acoustic communication," Proc. 09 Acoustic Society America Conf., 2174 (2009).
  12. J. S. Kim, H. C. Song, W. S. Hodgkiss, M. Dzieciuch, and M. B. Porter, "Dynamic channel modeling with a time-evolving sea surface," Proc. 10 European Conference on Underwater Acoustic, 741-745 (2010).
  13. S. H. Oh, H. S. Kim, J. S. Kim, J. H. Cho, J. H. Chung, and H. C. Song,"Performance Analysis of Underwater Acoustic Communication Systems Using Underwater Channel Simulation Tool," (in Korean), J. Acoust. Soc. Kr. 31, 373-383 (2012). https://doi.org/10.7776/ASK.2012.31.6.373
  14. M. Fink, "Time-reversal mirrors," J. Phys. D: Appl. Phys.26, 1333-1350 (1993). https://doi.org/10.1088/0022-3727/26/9/001
  15. W. A. Kuperman, W. S. Hodgkiss, H. C. Song, T. Akal, C. Ferla, and D. R. Jackson,"Phase conjugation in the ocean : Experimental demonstration of an acoustic time-reversal mirror," J. Acoust. Soc. Am. 103, 25-40 (1998). https://doi.org/10.1121/1.423233
  16. H. C. Song and W. S. Hodgkiss, "Multiuser communication using passive time reversal," IEEE J. Ocean. Eng. 32, 915-926 (2007). https://doi.org/10.1109/JOE.2007.904311
  17. M. J. Eom, J. S. Kim, J. H. Cho, H. Y. Kim, and I. Sung, "Algorithm and experimental verification of underwater acoustic communication based on passive time-reversal mirror" (in Korean), J. Acoust. Soc. Kr. 33, 392-399 (2014). https://doi.org/10.7776/ASK.2014.33.6.392
  18. J. S. Kim, H. C. Song, and W. A. Kuperman,"Adaptive time-reversal mirror," J. Acoust. Soc. Am. 109, 1817-1825 (2001). https://doi.org/10.1121/1.1358299
  19. M. J. Eom, S. H. Oh, J. S. Kim, and S. M. Kim,"Algorithm and experimental verification of underwater acoustic communication based on passive time reversal mirror in multiuser environment," (in Korean), J. Acoust. Soc. Kr. 35, 167-174 (2016). https://doi.org/10.7776/ASK.2016.35.3.167