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UAN'10 Engineering Test: P2P Communications

U. Vilaipornsawai,
A. Silva,
S.M. Jesus,
F. Zabel,
C. Martins,
SiPLAB, University of Algarve, Campus de Gambelas,
PT-8005-139 Faro, Portugal

Comments: download file (cintal_rep)
Ref.: SiPLAB Report 02/11, SiPLAB, University of Algarve,2011.

The Underwater Acoustic Network (UAN) project, started in 2008 with the aim to develop and test at sea an operational network of underwater sensors for port/off-shore protection. The fundamental idea behind UAN is that in order to obtain a sustainable gain of performance both at the basic P2P communication level and at the network level (across the whole infrastructure), the whole communication system should be able to adapt itself to the physical acoustic propagation conditions at that particular time and water volume where the experiment takes place. Within the scope of the project, a high data-rate unidirectional P2P communication link used to transfer seizable data, e.g. images, sonar signals, from an agent (e.g. fixed or mobile node) to a base station is also considered. We consider the node employing a single transducer modem with limited power and computation resources, while the base station employing the multi-hydrophone array, with data acquisition system connected to a shore/ship lab via fibre optic cable for data processing with no such constraints. Hence, an asymmetry both on the data ow and on the complexity is expected, i.e. a high data-rate transmission from a node to the base station, and a low data-rate transmission from the base station to a node and that among the nodes in the network. The communication between the agent to the array at the base station can be considered as a Single Input Multiple Output (SIMO) communication. In September 2010, the UAN10 sea trial was conducted off the Pianosa island, Italy. This report presents the detailed UAN10 experiment descriptions for P2P communications, equipment, environmental and geometric data, as well as signal descriptions and data analysis.

ACKNOWLEDGMENT: This work is supported by European Commission's Seventh Framework Programme through the grant for Underwater Acoustic Network (UAN) project (contract no. 225669). The authors would like to thank the Italian Navy for providing R/V Leonardo to conduct UAN10 experiment, as well as the support from Leonardo master and crew. Also, our gratitude is extended to the NATO Undersea Research Centre (NURC) team, lead by Dr. John Potter, and to all UAN personnel involved in the experiment.