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	A Doppler Shift Estimation Algorithm with Low Computational Complexity for Underwater Acoustic Communications
	Jie Yang; Xiangtian Liu; Fengqi Yu
	2015
会议名称	International Conference on Communication Technology IEEE ICCT 2016
会议地点	Hangzhou
英文摘要	In underwater acoustic communication system, carrier synchronization and symbol synchronization are adversely affected by Doppler effect, due to relative motion of the transmitter and receiver. This paper presents a novel Doppler shift factor estimation algorithm. That is the joint estimation of frequency spectrum using FFT and technique of ambiguity function. First the search range of ambiguity function is determined in a small range by using FFT spectrum analysis of the continuous wave (CW) signal. Then Doppler shift factor is estimated by using ambiguity function for linear frequency modulated (LFM) signal. Simulation results show that a small number of correlators can achieve the required Doppler shift accuracy when SNR is greater than -5dB. Therefore the hardware complexity is dramatically reduced.
收录类别	EI
语种	英语
内容类型	会议论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/7276]
专题	深圳先进技术研究院_医工所
作者单位	2015
推荐引用方式 GB/T 7714	Jie Yang,Xiangtian Liu,Fengqi Yu. A Doppler Shift Estimation Algorithm with Low Computational Complexity for Underwater Acoustic Communications[C]. 见:International Conference on Communication Technology IEEE ICCT 2016. Hangzhou.

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