Implementation of an Ultrasonic Modem Providing Low Cost Communication Channel in the Audio Frequency Boundary Band (가청주파수 경계대역에서 저가의 통신채널을 제공하는 초음파 모뎀 구현)
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- Journal of the Korea Institute of Information and Communication Engineering
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- v.14 no.6
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- pp.1391-1396
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- 2010