title: Time reversal communication with a mobile source.
abstract: Broadband underwater acoustic communication signals undergo either a compression or dilation in the presence of relative motion between a source and a receiver. Consequently, underwater acoustic communications with a mobile source/receiver require Doppler compensation through resampling. However, resampling may not be necessary when a channel-estimate-based time reversal approach is applied with frequent channel updates. Using experimental data (20-30 kHz), it is demonstrated that the performance of time reversal communication without resampling is similar to the case with resampling, along with the benefit of a modest computational saving.
authors.affiliation: Scripps Institution of Oceanography, University of California-San Diego, La Jolla, California 92093-0238.
authors.forename: H C
authors.initials: HC
authors.lastname: Song
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D004301:Doppler Effect; D004867:Equipment Design; D008962:Models, Theoretical; D009038:Motion; D009716:Numerical Analysis, Computer-Assisted; D009791:Oceanography / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors; D014867:Water
chemical_list: D014867:Water