Estimation of Doubly Spread Underwater Acoustic Channel via Gram-Schmidt Matching Pursuit

Fei Yun Wu, Kunde Yang, Tian Tian, Chunlong Huang, Yunchao Zhu, Feng Tong

科研成果: 书/报告/会议事项章节会议稿件同行评审

3 引用 (Scopus)

摘要

The underwater acoustic channel (UAC) exhibits strongly time delay and Doppler (DD) spread especially when the UAC is rapidly time-varying. These dynamic factors result to a serious impact on communication performance such as Inter-Symbol Interference (ISI). Hence, estimation of complex amplitude, time delay and the Dopplers of the UAC becomes the key part in underwater acoustic communication and is hopeful for improving the performance of equalization. However, the estimation is challenged by multiple factors to be estimated in delay and Doppler dimensions. This study exploits the sparsity of the UAC and develops an estimator via using Gram-Schmidt to find orthogonal bases, which leads to the fast and orthogonal way to select the supports of the dictionaries. The support list of the dictionaries constructed by probe signal can be used for estimating the DD functions from a noisy received signal. Matching Pursuit (MP) and Least Square (LS) methods are used for comparisons. The effectiveness of the proposed method is verified by the experimental data.

源语言英语
主期刊名OCEANS 2019 - Marseille, OCEANS Marseille 2019
出版商Institute of Electrical and Electronics Engineers Inc.
ISBN(电子版)9781728114507
DOI
出版状态已出版 - 6月 2019
活动2019 OCEANS - Marseille, OCEANS Marseille 2019 - Marseille, 法国
期限: 17 6月 201920 6月 2019

出版系列

姓名OCEANS 2019 - Marseille, OCEANS Marseille 2019
2019-June

会议

会议2019 OCEANS - Marseille, OCEANS Marseille 2019
国家/地区法国
Marseille
时期17/06/1920/06/19

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