Low Installation Cost GPS Telecommunications Synchronisation

Brendan Giles, George Zampetti

Abstract:	GPS is now widespread as a cost effective method of providing long-term highly accurate frequency sources (primary reference sources or PRS) throughout the telecommunications network. As the network continues to expand, service providers are seeking ever more efficient ways to install the necessary equipment, often in smaller premises or at customer sites. This paper deals with the difficulties of providing rooftop antenna installation for use with GPS PRS devices, and looks at the solutions adopted to enable Through the Window and Through the Wall (TTW) antenna installation. It traces the minimum signal reception required to provide PRS quality frequency, and the techniques and algorithms used to implement the current range of products. Results of intensive laboratory and field-testing, using various forms of local oscillator technology, are presented. The paper also looks at the practicalities of installing and commissioning such equipment, and suggests further improvements and alternatives for research in the future.
Published in:	Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999) September 14 - 17, 1999 Nashville, TN
Pages:	1065 - 1072
Cite this article:	Giles, Brendan, Zampetti, George, "Low Installation Cost GPS Telecommunications Synchronisation," Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999), Nashville, TN, September 1999, pp. 1065-1072.
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