Title :
Multiple-input-multiple-output coherent time reversal communications in a shallow-water acoustic channel
Author :
Song, H.C. ; Roux, Philippe ; Hodgkiss, W.S. ; Kuperman, W.A. ; Akal, T. ; Stevenson, M.
Author_Institution :
Marine Phys. Lab., Scripps Instn. of Oceanogr., La Jolla, CA
Abstract :
A recent time reversal (TR) experiment demonstrated that multiple foci can be projected from an array of sources to the same range but at different depths. This multiple input/multiple output process can potentially increase the information data rate. This paper presents experimental results of coherent TR communications (binary phase-shift keying, quaternary phase-shift keying, and 8-quadratic-amplitude modulation) at 3.5 kHz with a 1-kHz bandwidth where different messages were sent simultaneously to either two or three different depths at an 8.6-km range in a 105-m-deep water
Keywords :
amplitude modulation; phase shift keying; underwater acoustic communication; 1 kHz; 3.5 kHz; 8-quadratic-amplitude modulation; binary phase-shift keying; multiple-input-multiple-output coherent time reversal communications; quaternary phase-shift keying; shallow water acoustic channel; Bandwidth; Intersymbol interference; MIMO; Mirrors; Phase shift keying; Radio transmitters; Receivers; Transmission line measurements; Underwater acoustics; Underwater communication; Coherent communications; intersymbol interference (ISI); multipath environment; multiple-input–multiple-output (MIMO); time reversal; time reversal mirror (TRM);
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2005.850911
