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| 一种低能耗的水声通信编码方案的研究 | |
| 引用本文： | 刘林泉,梁国龙,吴波,周志强,李宏伟.一种低能耗的水声通信编码方案的研究[J].声学技术,2007,26(1):130-133. |
| 作者姓名： | 刘林泉 梁国龙 吴波 周志强 李宏伟 |
| 作者单位： | 1. 哈尔滨工程大学黑龙江,哈尔滨,150001;解放军某部,湛江,524022 2. 哈尔滨工程大学黑龙江,哈尔滨,150001 3. 解放军某部,湛江,524022 |
| 摘 要： | 研究了一种用多个不同频率的CW窄脉冲与帧同步脉冲的时延差携带信息的水声通信技术。该技术利用多个不同频率的CW矩形窄脉冲与帧同步CW矩形窄脉冲之间的时延值进行信息编码,在接收端采用时延估计和频率检测技术进行解码,从而使码元间距成为可携带信息的有用资源,将码元间距扩展到足够宽,既可有效地克服水声信号的多途影响、提高频带利用率,又可大大减少码元脉冲数量,达到节省能量并提高通信可靠性的目的。仿真结果表明,该水声通信编码体制数据传输速率适中,编码和解码简易,系统稳健。 |
| 关 键 词： | 水声通信 节能声通信 跳频时延编码(FH-TDFSK) 抗多途传输 |
| 文章编号： | 1000-3630（2007）-01-0130-04 |
| 收稿时间： | 2005-11-21 |
| 修稿时间： | 2005-11-212006-04-26 |
Power saving coding for underwater acoustic communication |
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| LIU Lin-quan,LIANG Guo-long,WU Bo,ZHOU Zhi-qiang and LI Hong-wei.Power saving coding for underwater acoustic communication[J].Technical Acoustics,2007,26(1):130-133. | |
| Authors: | LIU Lin-quan LIANG Guo-long WU Bo ZHOU Zhi-qiang and LI Hong-wei |
| Affiliation: | Harbin Engineering University, Harbin 150001, China |
| Abstract: | An underwater acoustic communication scheme is described.It uses time delay among CW narrow pulses filled with different frequencies and frame synchronous CW narrow pulse to carry information.The receiver uses time delay estimation and frequency detection for decoding.The element intervals are used to overcome the multi-path effect,improve frequency band effici-ency,and reduce the number of pulses so as to save energy and increase system reliability.Lake trial results show that the rate of data transmission is moderate,coding and decoding are easy to implement,and the system is robust. |
| Keywords: | underwater acoustic communication energy conservation acoustic communication frequency hopping and time delay frequency shift keying(FH-TDFSK) multi-path |
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