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	HFM spread spectrum modulation scheme in shallow water acoustic channels
	Zhang, Lan ; Xu, Xiaomei ; Feng, Wei ; Chen, Yougan ; Zhang L(张兰) ; Xu XM(许肖梅) ; Chen YG(陈友淦)
	2012
关键词	Communication systems Doppler effect Modulation Oceanography Underwater acoustics
英文摘要	Conference Name:OCEANS 2012 MTS/IEEE Hampton Roads Conference: Harnessing the Power of the Ocean. Conference Address: Virginia Beach, VA, United states. Time:October 14, 2012 - October 19, 2012.; Marine Technology Society (MTS); Oceanic Engineering Society of IEEE (IEEE/OES); Owing to the large delay spread caused by multipath propagation and the severe Doppler Effect of the shallow water acoustic channel, a spread spectrum modulation scheme using hyperbolic frequency modulated (HFM) signal named as 'HFM spread-spectrum modulation' (HFM-SS) was exploited to substantially improve the performance of communications over such channels. Apart from some advantages such as reducing influence of narrow-band noise, HFM signals provide Doppler-invariability and low power cost. The effects of multipath and Doppler shift on the proposed scheme were investigated by establishing a model of a shallow water acoustic communication system. The emulated results demonstrate that it has a good prospect for underwater acoustic communication system, especially for moving platforms. High transmission stability of this approach was validated in lake experiments carried out in the summer 2011. 漏 2012 IEEE.
语种	英语
出处	http://dx.doi.org/10.1109/OCEANS.2012.6404896
出版者	IEEE Computer Society
内容类型	其他
源URL	[http://dspace.xmu.edu.cn/handle/2288/85338]
专题	海洋环境－会议论文
推荐引用方式 GB/T 7714	Zhang, Lan,Xu, Xiaomei,Feng, Wei,et al. HFM spread spectrum modulation scheme in shallow water acoustic channels. 2012-01-01.

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