Research Article
Underwater Acoustic Channel Estimation Based on Signal Cancellation
@INPROCEEDINGS{10.1007/978-3-030-41114-5_16, author={Junkai Liu and Yangze Dong and Gangqiang Zhang and Junqing Zhang}, title={Underwater Acoustic Channel Estimation Based on Signal Cancellation}, proceedings={Communications and Networking. 14th EAI International Conference, ChinaCom 2019, Shanghai, China, November 29 -- December 1, 2019, Proceedings, Part I}, proceedings_a={CHINACOM}, year={2020}, month={2}, keywords={Underwater acoustic channel Matched filtering Parameters inversion Signal cancellation Channel correction}, doi={10.1007/978-3-030-41114-5_16} }- Junkai Liu
Yangze Dong
Gangqiang Zhang
Junqing Zhang
Year: 2020
Underwater Acoustic Channel Estimation Based on Signal Cancellation
CHINACOM
Springer
DOI: 10.1007/978-3-030-41114-5_16
Abstract
Aiming at the requirement of underwater information security transmission, the security of encryption key generation and distribution in underwater acoustic communication is concerned. Key generation technology based on underwater acoustic channel (UAC) estimation can improve the security and real-time generation of encryption keys. In this paper, the idea of estimating the multipath structure of UAC is to retrieve the arrival signal by acquiring the parameters of larger energy Eigen-ray from real arrival signal, and to eliminate the arrival signal of larger energy Eigen-ray path from the real signal through signal cancellation, so as to eliminate the influence of side lobes of larger energy signal to arrival signals of other Eigen-ray path, to improve the estimation performance of multipath structure in underwater acoustic channel. The simulation and experimental results show that the improved algorithm can estimate the multipath structure of underwater acoustic channel more accurately and provide support for the subsequent underwater information security transmission.
