Proc. IEEE Workshop on
Signal Processing Systems,
October 6-8, 2010,
Cupertino, California USA,
accepted for publication.
Multi-stage And Sparse Equalizer Design For
Communication Systems In Reverberant Underwater Channels
Karl F. Nieman,
Kenneth A. Perrine,
Keith H. Lent,
Terry L. Henderson,
Terry J. Brudner and
Brian L. Evans
Advanced Technology Laboratory,
Applied Research Laboratories,
The University of Texas at Austin,
Austin, TX 78712 USA
Companion papers were presented at
Asilomar 2010 and
Coherent underwater communication systems in shallow water must
compensate for several impairments, including Doppler shift and reverberant
In this paper, we quantify tradeoffs in communication performance vs.
computational complexity in designing receivers to compensate for these
Our communication system is unidirectional, single-carrier, wideband,
We use 1.5 hours of recorded data from an experimental system on a
public lake with a moving transmitter and stationary receiver.
Our contributions include tradeoff analysis for Doppler shift estimation,
multi-stage equalizers and sparse equalizers.
We compare multi-stage and sparse equalizers against traditional
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