An underwater acoustic communications scheme with inherent scale diversity for multiple users
Duman, Tolga M.
2013 OCEANS - San Diego
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Wideband underwater acoustic communication channels can cause undesirable multipath and Doppler scaling distortions to propagating acoustic signals. In this paper, we propose to exploit a time-scale canonical representation for wideband time-varying channels to achieve joint multipath-scale diversity. We design a signaling scheme with hyperbolic time-frequency signatures that is matched to the underwater acoustic environment to achieve scale diversity. The signaling scheme, combined with code-division multiple-access, is extended to multiple user transmission to improve multiuser detection performance, as demonstrated with simulations. © 2013 MTS.
Time varying channel
Underwater acoustic communications
Published Version (Please cite this version)http://dx.doi.org/10.23919/OCEANS.2013.6741369
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