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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/37595

Title: Hilbert-Huang Transform Based Instantaneous Frequency Features for Underwater Voice (I) Transmission
Authors: Chin-Feng Lin
K. J. Hsiao
C. C. Wen
S. H. Chang
I. A. Parinov
Contributors: 國立臺灣海洋大學:電機工程學系
Keywords: Hilbert-Huang transform (HHT) time–frequency analysis
Underwater voice (I) transmission
Orthogonal variable spreading factor (OVSF)
Orthogonal frequency division modulation (OFDM)
Underwater multimedia communication platform
Channel model
Intrinsic mode function (IMF)
Date: 2014-03
Issue Date: 2016-03-28T06:40:08Z
Publisher: Physics, Mechanics and Applications
Abstract: Abstract:This paper examines the features of a Hilbert-Huang transform instantaneous frequency for application in underwater voice (I) transmissions. The duration and sampling frequency of the voice (I) sample were 5 s, and 8000 Hz, respectively. The voice (I) sample was inputted into a Matlab-based direct mapping orthogonal variable spreading factor/orthogonal frequency division modulation underwater multimedia communication platform. An underwater actual test channel model was employed in the proposed Matlab-based platform. Applying Hilbert-Huang time–frequency analysis to investigate the IF features of the received voice (I) signal resulted in transmission bit error rates of 0, 10−4, 10−3, 10−2 and 10−1. The mean frequencies of the voice sample (I) signal for IF2 were 646.6, 644, 648.3, 625.2, and 669.0 Hz, respectively, for the transmission bit error rates of 0, 10−4, 10−3, 10−2 and 10−1. The mean frequencies of the voice sample (I) signal for IF2 were 2.6, −3.7, 21.1 and 22.4 Hz, respectively, for the transmission bit error rates of 10−4, 10−3, 10−2 and 10−1.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/37595
Appears in Collections:[電機工程學系] 期刊論文

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