Back Issues of Engineering & Technology in India - From February 2016
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M. S. Thirumalai
Publisher: M.S. Thirumalai
11249 Oregon Circle
Bloomington, MN 55438
Vulnerability Level Based
Collision Avoidance in Underwater Sensor Networks
V. Anandavenkatesh, II Year M.E (Applied Electronics)
S. Vallimayil, M.E.
One of the main problems in underwater communication is the low data rate available due to the use of low frequencies. Moreover, there are many problems inherent to the medium such as reflections, refraction, energy dispersion, ect. That greatly degrades communication between devices. In some cases, wireless sensors must be placed quite close to each other in order to take more accurate measurements from the water while having high communication bandwidth. In these cases, while most researchers focus their efforts on increasing the data rate for low frequencies. We show our wireless sensor node deployment and its performance obtained from a real scenario and measures taken for different frequencies, modulations and data transfer rate. The performed test show maximum distance between sensors, the number of lost packets and the average round trip time. We compare our communication system proposal with the existing systems. Although our proposal provides short communication distances, it provides high data transfer rates. It can be used for precision monitoring in application such as contaminated ecosystems or for device communication at high depth.
Keywords: Transmission nodes,Acoustic sensor, Find the shortest path, source and Destination allocation.
An Underwater Sensor Network (UWSN) is an emerging network paradigm which consists of a number of underwater sensor nodes and is deployed to perform collaborative monitoring and resource exploration tasks over a given area . The applications of UWSNs have huge potential for monitoring the health of river and marine environments. Although there are a large number of developed network protocols for wireless sensor networks, the unique characteristics of UWSNs – such as limited bandwidth capacity, large propagation delay and node mobility, as well as high error probability – lead to considerable challenges in their design. This special issue aims to bring together a variety of advanced technologies, theory and applications in the area of UWSNs. We solicit high-quality theoretical as well as practical studies on a broad range of issues important to communications, networks and applications.
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II Year M.E (Applied Electronics)
S. Vallimayil, M.E.
Assistant Professor / Department of ECE
Renganayagi Varatharaj College of Engineering