• Title/Summary/Keyword: 상수 오경보율 검출

Search Result 1, Processing Time 0.015 seconds

Extraction of Time Coherence Using Detection of Dominant Components for Underwater Acoustic Communication Channels at East Sea (동해 연근해에서 수중통신 채널의 지배응답 검출을 통한 시간 상관도의 산출)

  • Kim, Hyeonsu;Kim, Jaeyoung;Park, Gunwoo;Kim, Seongil;Chung, Jaehak
    • The Journal of the Acoustical Society of Korea
    • /
    • v.32 no.1
    • /
    • pp.22-31
    • /
    • 2013
  • In this paper, we propose a method that estimates the channel response from underwater communication signals with MMSE (Minimun Mean Squared Error) and detects dominant components automatically based on power of response components using CFAR (Constant False Alarm Rate). Statistical characteristics are analyzed with variation of magnitude and phase and time coherence via experimental data obtained by drifting transmitter and receiver. We show that bit error rate has small difference, 1.2 times, compared with the case using every channel information estimated within data period when estimation and equalization is performed with extracted characteristic obtained by the proposed method.