Experimental Research of Chirp Spread Spectrum for High-rate Underwater Acoustic Communication
The underwater acoustic channel is a complicated and time-varying multipath channel, and it constrains high-rate communication. The multipath results from surface reflection and refraction during wave propagation. This property of different propagation distances of paths is explored by the chirp spread spectrum (CSS) technique, and it replaces a certain carrier by a cyclically sweeping chirp. The paths can be separated using this technique by the simple signal processing, and then the multipath channel is treated as a single-path channel for high-rate communication without ISI. The CSS is improved by using an additional chirp in every sweeping cycle within the same band to double the rate. In this paper, the CSS is researched, the analysis is given, and data collected from lake trials is analyzed to show the improvements potential advantage in doubling the data rate.
Guosong Zhang Shihong Zhou Jens M.Hovem Hefeng Dong Junsheng Jiao
IET Nowegian University of Science and Technology,Trondheim 7491,Norway Hangzhou Applied Acoustic Research Institute,Hangzhou 310012,P.R.China SINTEF-ICT,Strindveien 4,Trondheim 7465,Norway
国际会议
The 10th Western Pacific Acoustics Conference(第十届西太平洋声学会议WESPAC X)
北京
英文
1-8
2009-09-21（万方平台首次上网日期，不代表论文的发表时间）