Probing the underwater acoustic communication channel off Rottnest Island, Western Australia
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The emerging field of underwater acoustic communication networks is under-pinned by accurate knowledge on the timevarying distortion of acoustic signals by the ocean. This paper reports on time-varying underwater acoustic channel responses measured over ranges of 100m to 10km in 50m deep water south-west of Rottnest Island, Western Australia, for 9-15kHz band signals. The channel response measurement techniques are described, including post-processing by correlative channel probing. The measured channel response spreading function is presented which conveys the spectrum of Doppler frequency shifts imparted by the ocean environment to transmitted data signals.
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Pusey, Grant Mark (2011)Underwater acoustic communication is a rapidly progressing field of technology, largely due to recent advances in low cost and power efficient digital signal processors. Unfortunately, the unpredictable and time varying ...
Caley, M.; Duncan, Alec (2013)The underwater communication channel is often characterised by transient reinforcement and fading of multiple transmission paths, such that no single transmission path can be generally relied upon to provide a continuous ...
Caley, M.; Duncan, Alec (2011)The underwater acoustic communication channel is characterised by transient signal fading across multiple propagation paths and much greater time spread between first and last arrivals than in terrestrial wireless systems. ...