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Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Some preliminary short-range transmission loss measurements for wireless sensors deployed on indoor walls

Sasloglou, Konstantinos and Darbari, Faisal and Glover, I.A. and Andonovic, I. and Stewart, R.W. (2008) Some preliminary short-range transmission loss measurements for wireless sensors deployed on indoor walls. In: 11th IEEE Singapore International Conference on Communication Systems, 2008. IEEE, pp. 129-132. ISBN 978-1-4244-2423-8

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Abstract

Antenna characteristics and propagation are of fundamental importance to the coverage, capacity and service quality of all wireless communication systems. This paper presents short-range narrowband propagation measurements at 2.445 GHz for sensor network applications in an indoor environment. The effect of sensor node location on a wall has been determined for a pair of linearly polarised rectaxial antennas and a pair of ceramic patch antennas. Propagation loss has been measured as a function of (i) node separation (i.e. link length), (ii) node drop (i.e. vertical displacement of nodes below the ceiling) and (iii) node height (i.e. the perpendicular displacement of the nodes from the wall surface). It is observed that there is no significant effect of wall offset. In addition, the path loss exponent n generally increases with decreasing node drop.