Journal of the Institute of Electronics and Information Engineers (전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Analysis of QPSK Performance over a Theoretical Underwater Acoustic Channel

이론적 수중음향 채널모델에서 QPSK 변조의 성능분석

  • Kang, Heehoon (Department of Electronics, Yeoju Institute of Tech.) ;
  • Im, Yo-woong (Department of Electrical, Electronic, Communication and Computer Engineering, Chonnam National University)
  • 강희훈 (여주대학교 전자과) ;
  • 임요웅 (전남대학교 전기전자통신컴퓨터공학부)
  • Received : 2016.03.07
  • Accepted : 2016.07.01
  • Published : 2016.07.25
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Abstract

In this paper, we analyze a QPSK MODEM over underwater acoustic channel model. Ambient noises and parameters of underwater environments debase the BER performance of an underwater modem. In the paper, the BER performance of uncoded QPSK and rate-2/3 convolutional coded QPSK is analyzed. And To improve BER Performance, we apply a channel equalization technique to the underwater modem.

본 논문에서는 수중 음향 채널 모델에서 QPSK(Quadrature Phase Shift Keying) 모뎀의 성능을 분석한다. 수중음향채널의 배경잡음과 다양한 환경 파라메터는 수중모뎀의 비트오류율(BER:Bit Error Rate) 성능을 저하시키는 원인이다. 본 논문에서는 이론적인 수중채널모델에서 비부호화된 QPSK와 부호율 2/3의 길쌈부호기를 사용한 부호화된 QPSK의 BER 성능을 분석한다. 수중 음향 통신 시스템의 성능을 개선하기 위해서 파일럿 심볼 기반의 채널 등화 방식을 적용하였다.

Keywords

References

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