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Research Article

Performance improvement of long-range underwater acoustic communication in deep water using spatiotemporal diversity

심해 장거리 환경에서 시공간 다이버시티를 이용한 수중음향통신성능 향상

Heejin Park1
,
Donghyeon Kim1
,
J. S. Kim2∗
,
Joo Young Hahn3
,
Joung-Soo Park3
박 희진1
,
김 동현1
,
김 재수2∗
,
한 주영3
,
박 정수3
1한국해양과학기술원-한국해양대학교 해양과학기술전문대학원
2한국해양대학교 해양공학과
3국방과학연구소
∗Corresponding Author
30 September 2019. pp. 587-592
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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.

Keywords
Long range UAComm (Underwater Acoustic Communication)
Diversity
TRM (Time Reversal Mirror)
BER (Bit Error Ratio)

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.

키워드
장거리 수중음향통신
다이버시티
TRM (Time Reversal Mirror)
비트 오율
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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 : 38
  • No :5
  • Pages :587-592
  • Received Date : 2019-06-07
  • Accepted Date : 2019-07-31
  • DOI :https://doi.org/10.7776/ASK.2019.38.5.587
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