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Spread Spectrum Techniques in Wireless Communication

Dias Pereira, J. M. ; Postolache, O. ; Girão, P.M.

IEEE Instrumentation and Measurement Magazine Vol. 12, Nº 6, pp. 21 - 24, December, 2009.

ISSN (print): 1094-6969
ISSN (online): 1094-6969

Journal Impact Factor: 0,738 (in 2009)

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Abstract
This paper gives a summarized overview of spread spectrum techniques that are used nowadays in a large number of applications.
A summarized analysis, in time and frequency domains, for direct sequence, frequency hopping and time hopping spread spectrum techniques of each technique is underlined.
Results of laboratory tests of a ZigBee network will be presented and experimental results compared with theoretical expectations.
In a second part of this paper it will be presented an application of a wireless sensing and actuating system developed by the authors to implement a wireless distributed measurement system for water quality assessment.