In this paper current research for an Underwater Wireless Sensor Network based on optical communication between nodes is described. Radio frequencies are strongly attenuated in water and can be considered as a feasible solution to explore alternative acoustic case of short-range distance. At the moment, our work focuses physical layer developed considering characteristics IEEE 802.11 infrared compatibility with 802.15.4 protocol terrestrial wireless sensor networks. This approach, that...

An optical wireless underwater communication simulation model is proposed, which serves as the theoretical of simulator for AUVs. Various parameters that will influence light distribution and performance are explored. As a preliminary result, this paper focuses on propagation in water, channel characteristics. Given transmitter water turbidity, provides received power every position. With calculation noise receiver, an estimation data rate capacity provided. This research aims at building...

Underwater wireless optical communication has been used for establish a link between mobile vehicles and/or fixed nodes because light, especially in the blue/green region, allows to achieve higher data-rate than acoustical or electromagnetic waves moderate distances. The here proposed work aim pave way diffuse allowing support an Wireless Sensor Network of dense-deployed specific application, such as monitoring and surveillance, shallow, coastal inland water case moderate/limited area. In...

In the last years with flourishing of WSN (wireless sensor network) paradigm, ignited by DARPA funded UC Berkeley "Smart Dust" project, monitoring and exploration terrestrial enviroment has greatly improved. The acquatic world, which covers more than 70% earth, instead, been largely unaffected revolution due to difficulty transferring most know-how developed for aerial systems devices their underwater counterparts. aim this article is propose a new generation UWSN (underwater wireless...

One of the challenging aspects in building an efficient underwater wireless sensor network (UWSN) is under-water communication. Radio frequencies are strongly attenuated water: available radio modules such as Bluetooth or LAN (IEEE 802.11), which operate gigahertz range, around 2.4 GHz, cannot be used where, currently, acoustic communication mainly employed. In case short-range distance, optical can a feasible alternative solution, even if light scattered and absorbed by water.

In this paper, the implementation of a DSP controlled AC-DC matrix converter is presented. Experimental results, obtained with 5 kW prototype and compared analogous results computer simulated model, are shown. Functional issues discussed design solutions proposed implemented.