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Experimental testing of Asymmetric Underwater Acoustic Networks
Vilaipornsawai, U.; Silva, António J.; Jesus, S. M.The coordinated operation of multiple vehicles within the framework of multipoint non-cabled observatories and offshore activities sprung the necessity for complex underwater acoustic networks (UANs). An example of such UAN consisting of fixed and mobile underwater nodes, was recently developed and tested at sea. A star-shaped network topology was adopted, where wide area network (WAN) integration was ensured t...
Underwater communications for moving source using geometry-adapted time reversa...
Vilaipornsawai, U.; Silva, A.; Jesus, S. M.This work presents an improved version of our previously proposed technique, i.e. the combined geometryadapted passive Time Reversal (pTR) and Decision Feedback Equalizer (DFE) for underwater communications between a moving source and a fixed receiver array (implying a range change) [1]. Since the geometry change can be compensated by employing a proper frequency shift on the probe Impulse Response (IR) in the ...
Combined adaptive time reversal and DFE technique for time-varying underwater c...
Vilaipornsawai, U.; Silva, A.; Jesus, S. M.This work presents a combined geometry-adapted passive Time Reversal (pTR) and Decision Feedback Equalizer (DFE) technique for time-variant underwater communications. We consider sustainable high data rate communications between a moving source and/or a moving receiver array, i.e. there is the presence of geometry changes such as range and depth changes. Such geometry changes can be partially compensated by emp...
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