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Performance of Parametric Array Communication System in Underwater AWGN Channel

수중 AWGN 채널에서의 파라메트릭 배열 통신 성능

Jaeil Lee
,
Chong Hyun† Lee†
,
Jinho Bae
,
Dong-Guk Paeng
,
Won-Ho* Kim
이 재일
,
이 종현††
,
배 진호
,
팽 동국
,
김 원호*
제주대학교 해양과학대학 해양정보시스템공학과
*국방과학연구소 제6기술연구본부
†교신저자. †Corresponding Author. 
31 July 2013. pp. 294-300
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Abstract

In this paper, we present performance analysis results of parametric array communication system in terms of theoretical BER and channel capacity of MIMO in underwater AWGN channel by using simplified SNR of difference frequency. The SNR of the difference frequency is calculated by using transmission loss, noise level, and source level of difference frequency in which nonlinear effect is considered. By assuming primary frequencies as 210 kHz and 190 kHz, difference frequency as 20 kHz, transducer diameter as 0.1 m, and noise level as 50 dB and the requested BER as , we obtain parametric array communication range gains over the communication system using primary frequency of 59.11 km in fresh water and 5 km in sea water, respectively. Also we obtain range gains of 38.84 km and 46.38 km in fresh water, and 3.88 km and 4.38 km in sea water when we use SISO and 2×2 MIMO parametric array communications for the channel capacity of 10 bps/Hz.

Keywords
Parametric array communication
Underwater communication
Acoustic signal processing
BER
MIMO channel capacity

본 논문에서는 간략화된 차 주파수의 신호대잡음비을 이용하여 수중 AWGN 환경하에서 파라메트릭 배열 통신 시스템의 성능을 비트오류확률과 MIMO 채널용량 관점에서 분석한 결과를 제시한다. 분석을 위해 사용된 차 주파수의 신호대잡음비는 전달손실, 잡음준위 그리고 비선형성이 고려된 차 주파수의 음원준위로 계산된다. 1차 주파수 210 kHz와 190 kHz, 차 주파수 20 kHz, 트랜스듀서 직경 0.1 m, 잡음준위 50 dB, 요구되는 비트오류 확률을 으로 가정할 때, 담수 환경과 해수 환경에서의 1차 주파수 통신 거리 대비 파라메트릭 배열의 통신거리 이득을 각각 59.11 km와 5 km를 얻었다. 또한, 10 bps/Hz의 채널용량 조건을 위해 SISO 및 (2×2) MIMO 파라메트릭 배열을 사용할 경우, 담수에서는 38.84 km와 46.38 km 거리이득을 해수에서는 3.88 km 4.381 km의 거리이득을 얻었다.

키워드
파라메트릭 배열 통신
수중 통신
음향 신호처리
비트오류확률
MIMO 채널용량
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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 : 32
  • No :4
  • Pages :294-300
  • Received Date : 2012-05-31
  • Revised Date : 2012-09-25
  • Accepted Date : 2013-03-20
  • DOI :https://doi.org/10.7776/ASK.2013.32.4.294
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