| 刘凇佐,孙宗鑫,周锋,李慧,乔钢.基于DSK6455的OFDM水声通信算法设计与实现[J].声学技术,2012,(6):606~610 |
| 基于DSK6455的OFDM水声通信算法设计与实现 |
| Algorithm design and implementation of OFDM underwater acoustic communication based on DSK6455 |
| 投稿时间：2011-12-02 修订日期：2012-02-26 |
| DOI：10.3969/j.issn1000-3630.2012.06.015 |
| 中文关键词: 正交频分复用 水声通信 实时通信 |
| 英文关键词: Orthogonal Frequency Division Multiplexing underwater acoustic communication real-time communication |
| 基金项目:国家863重点资助项目(2009AA093601-2) |
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| 中文摘要: |
| 正交频分复用(Orthogonal Frequency Division Multiplexing, OFDM)技术由于其具有频谱利用率高、抗多径和抗脉冲噪声能力强、在高效带宽利用率情况下的高速传输能力以及实现方法简单的特点,成为了近年来水声通信中的研究重点和热点之一.基于OFDM技术,在SDI公司的TMS320C6455DSK(DSP Starter Kit)板卡上实现了实时水声通信,试验结果表明,在4.3km的水平通信距离上,采用QPSK调制,1/2卷积码编码,通信带宽为4kHz,通信速率达到了1873 bps,误码率小于10-4.为实现OFDM技术的水声组网通信,水声语音、图像传输奠定了基础. |
| 英文摘要: |
| Because of the good performances such as high spectrum efficiency, strong abilities of anti-multipath and anti-impulse noise, high-speed transmission capacity under efficient bandwidth utilization and simple implementation, OFDM becomes one of the research priorities and hotspots in underwater acoustic communication. Underwater acoustic real-time communication is realized on the TMS320C6455DSK(DSP Starter Kit) based on the study of OFDM. The Songhua river trial got the following results: the data rate is 1873bps and the bit error rate less than 10-4 for the underwater acoustic communication with QPSK modulation, rate-1/2 channel coding, and signal frequency between 4kHz and 8kHz at the distance of 4.3km. |
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