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Lookup NU author(s): Professor Bayan Sharif, Professor Jeffrey Neasham, Emeritus Professor Oliver Hinton, Alan Adams, Dr Jonathan Davies
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Doppler shift tracking and compensation based on block and adaptive estimation methods are presented. These methods enable robust high data-rate acoustic communication between moving platforms such as autonomous underwater vehicles. The proposed schemes are incorporated within a wideband beamforming array with decision feedback equalization. The block-based Doppler compensator is used as a pre-processor to the beamforming structure, whereas the adaptive compensator and the beamforming structure are jointly updated. The two methods employ multirate sampling and linear interpolation to compensate for the Doppler shift. Simulation and experimental sea-trial results are reported for both block and adaptive methods, which demonstrate successful communication at 16 kbit/s with a transmitting platform moving at up to ±2.6 m/s.
Author(s): Adams AE; Hinton OR; Sharif BS; Neasham J; Davies J
Publication type: Article
Publication status: Published
Journal: IEE Proceedings: Radar, Sonar and Navigation
Year: 2000
Volume: 147
Issue: 5
Pages: 239-246
ISSN (print): 1350-2395
ISSN (electronic): 1359-7086
Publisher: Institution of Electronic and Electrical Engineers
URL: http://dx.doi.org/10.1049/ip-rsn:20000665
DOI: 10.1049/ip-rsn:20000665
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