本論文使用陸地電磁波通訊之理論，將其應用於聲波在水下通道傳送。因為水下通道是複雜且干擾嚴重的環境，因此水下通訊比起一般的陸地通訊顯的更為艱鉅，所以建立一可靠的水下通訊系統為本論文主要目標。
軟體介面包括接收端與發射端之程式皆以Labview程式撰寫，在調變方法我們選用了BPSK調變，針對水下通道雜訊的干擾問題，我們也加入了BCH碼(Bose-Chaudhuri-Hocqenqhem Codes)來降低位元錯誤率，除了通道編碼技術，也應用了脈衝整型濾波器來減輕ISI的干擾。
為了實現水下點對點控制，我們也應用了TA7279P直流馬達控制IC來製作馬達控制電路，並將實體電路與接收端之資料擷取卡結合，完成水下聲波點對點控制系統。
經由實驗，本系統已經可以在傳輸距離3公尺的有限區域水下環境(有反射波存在)完成位元組的傳送，並可成功的控制馬達之作動。

We used the land radio communication theories in this thesis and applied to acoustic waves for underwater channel propagating. Because the underwater channel is a complex environment with severe interference, thus the implementation of underwater communication is more difficult than that of radio communication. So the main purpose of this thesis is constructing reliable underwater communication system.
The software interface is written by use of Labview. We choice BPSK modulation in this thesis. About the underwater channel,we also employed Bose-Chaudhuri-Hocqenqhem Codes to reduce Bit Error Rate. Except the channel coding technique, We also used pulse shaping filter to reduce interference of ISI.
For achieving underwater point-to-point control, we also applied TA7279P DC motor control IC to make motor control circuit and combined it with receiver DAQ and complete the underwater acoustic point-to-point control system.
By experiment, Data bits are conducted and motion of motor controlled successfully in the underwater environment about 3m distances of transmission. (with reflection waves).

參考文獻
[1] 陳世賢，“水下聲傳數據機 /4 DQPSK展頻技術之實現”，台灣海洋大學電機工程學系碩士論文，1999年。
[2] 葉炎山，“最大長度序列碼應用於水下資料傳送系統”，台灣海洋大學電機工程研究所碩士論文，1993年。
[3] 呂福生、曾敬翔、陳力維、陳志強、吳鑌崇，“全數位水下傳呼機同步與等化系統之設計”，第六屆水下技術研討會暨國科會成果發表會，81~90頁，2004年。
[4] 吳鑌崇，“以TMS320C6x DSP 實現全數位多感測器水下傳呼機”，國立台灣海洋大學電機工程研究所碩士論文，2005年。
[5] Hyucek M. Kwon and Theodore G. Birdsall, “Digital Waveform Coding For Ocean Acoustic Telemetry,” IEEE Journal of Oceanic Eng., Vol. 16, No. 1, pp. 56-65, Jan. 1991.
[6] R. S. Andrews and L. F. Turner, “On the Performance of Underwater Data Transmission Systems Using Amplitude-Shift-Keying Techniques,” IEEE Trans. on Sonics and Ultrasonics, Vol. 23, No. 1, pp. 64-71, 1976.
[7] A. Falahati, B. Woodward, and S. C. Bateman, “Underwater Acoustic Channel Models for 4800b/s QPSK Signals,” IEEE Journal of Oceanic Eng., Vol. 16, No. 1, pp. 12-20,1991.
[8] J. G. Prokis, “Coded Modulation for Digital Communications Over Rayleigh Fading Channels,” IEEE Journal of Oceanic Eng, Vol. 16, No. 1, pp. 66-73, 1991.
[9] J. A. Neasham, D. Thompson, A. D. Tweedy, M. A. Lawlor, O. R. Hinton, A. E. Adams, and B. S. Sharif, “Combined Equalisation and Beamforming to Achieve 20 kbits/s Acoustic Telemetry for ROVs,” OCEANS’96 MTS/IEEE Conference Proceedings, Vol. 2, pp. 988-993, Sep. 1996.
[10] 劉金源，“水中聲學－水聲系統之基本操作原理”，國立編譯館，2001。
[11] H. Medwin, “Speed of Sound In water: A Simple Equation for Realistic Parameters,” Journal Acoustics Society American, Vol. 21, pp. 125-136, 1996.
[12] A. B. Baggeroer, “Acoustic Telemetry – An Overview,” IEEE Journal of Ocean Eng., Vol. 9, No. 4, pp. 229-235, 1984.
[13] V. F. George, Ocean and Seabed Acoustic – A Theory of Wave Propagation, Prentice-Hall, 1994.
[14] 劉金源，“海洋聲學導論-海洋聲波傳播與粗糙面散射之基本原理”，中山大學出版社，2002年。
[15] 余兆棠、文成康、林瑞源、張郁斌、林福林，“無線通訊與網路”，滄海書局，2006年。
[16] 繆紹綱，“通訊系統”，高立圖書有限公司，2000年。
[17] J. G. Proakis, Digital Communications, 2nd ed., McGraw-Hill, New York, 1989.
[18] Simon Haykin, Communication Systems, Wiley, 2001.
[19] 陳信宏，“ISM頻段閉迴路高斯頻率鍵移調制式頻率合成器之研究”，國立中山大學電機工程所碩士論文，2001年。
[20] 電子工程專輯, http://www.eettaiwan.com/ART_8800446996_617723_B87855df200612.htm
[21] http://designer.mech.yzu.edu.tw/article/articles/technical/(2001-09-11)%20%A4p%AB%AC%B0%A8%B9F%C5X%B0%CAIC%C2%B2%A4%B6%BBP%C0%B3%A5%CE.htm