The Journal of the Acoustical Society of Korea (한국음향학회지)

The Acoustical Society of Korea (한국음향학회)
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Performance improvement of long-range underwater acoustic communication in deep water using spatiotemporal diversity

심해 장거리 환경에서 시공간 다이버시티를 이용한 수중음향통신성능 향상

  • 박희진 (한국해양과학기술원-한국해양대학교 해양과학기술전문대학원) ;
  • 김동현 (한국해양과학기술원-한국해양대학교 해양과학기술전문대학원) ;
  • 김재수 (한국해양대학교 해양공학과) ;
  • 한주영 (국방과학연구소) ;
  • 박정수 (국방과학연구소)
  • Received : 2019.06.07
  • Accepted : 2019.07.31
  • Published : 2019.09.30
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Abstract

ISI (Inter Symbol Interference) reduces the performance of UAComm (Underwater Acoustic Communication). This paper shows that the performance of UAComm can be improved through the spatiotemporal diversity method that is the combination of spatial diversity and temporal diversity methods. By using spatiotemporal diversity, the array aperture was reduced to increase the efficiency of the UAComm system. It is also verified using the experimental data of BLAC18 (Biomimetic Long range Acoustic Communication 18) conducted in October 2018.

수중음향통신에서 다중경로로 인한 인접 심볼 간 간섭은 통신 성능을 저하시킨다. 인접 심볼 간 간섭의 영향을 최소화하여 수중음향통신 성능을 향상시키기 위해 다이버시티 기법을 사용한다. 본 논문에서는 공간 다이버시티와 시간 다이버시티의 결합을 통해 수중음향통신 성능이 개선됨을 보인다. 시공간 다이버시티를 통해 제한적인 배열에서 수중통신 시스템의 효율성을 증대시켰다. 또한 2018년 10월 한국의 동쪽 해역에서 수행한 BLAC18(Biomimetic Long range Acoustic Communication 18) 실험 데이터와 비교하여 이를 검증하였다.

Keywords

References

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