Title :
Design & Performance of a Networked Ad-hoc Acoustic Communications System using Inexpensive Commercial CDMA Modems
Author :
Bengston, Keith J. ; Dunbabin, Matthew D.
Author_Institution :
CSIRO ICT Centre, Epping
Abstract :
We present a new approach for creating and implementing an ad-hoc underwater acoustic sensor network based on connecting a small processor to the serial port of a commercial CDMA acoustic modem. The processor acts as a "node controller" providing the networking layer that the modems lack. The ad-hoc networking protocol is based on a modified dynamic source routing (DSR) approach and can be configured for maximising information throughput or minimising energy expenditure. The system was developed in simulation and then evaluated during field trials using a 10 node deployment. Experimental results show reliable multi-hop networking under a variety of network configurations, with the added ability to determine internode ranges to within 1.5 m for localisation.
Keywords :
ad hoc networks; code division multiple access; modems; oceanographic techniques; telecommunication network routing; underwater acoustic communication; wireless sensor networks; CDMA modem; ad-hoc networking protocol; ad-hoc underwater acoustic sensor network; dynamic source routing; energy expenditure minimisation; information throughput maximisation; multihop networking; network configuration; networked ad-hoc acoustic communication system; networking layer; node controller; Acoustic sensors; Australia; Bandwidth; Laboratories; Modems; Multiaccess communication; Network topology; Underwater acoustics; Underwater communication; Wireless sensor networks;
Conference_Titel :
OCEANS 2007 - Europe
Conference_Location :
Aberdeen
Print_ISBN :
978-1-4244-0635-7
Electronic_ISBN :
978-1-4244-0635-7
DOI :
10.1109/OCEANSE.2007.4302283
