The Possibility and Prospect of Adopting New Multiplexing Techniques in Telemetering
AffiliationBeijing Institute of Satellite Information Engineering
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RightsCopyright © International Foundation for Telemetering
Collection InformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
AbstractOrdinarily, in telemetering systems people use FDM and TDM techniques for transmitting various signals from a great number of transducers. But neither in FDM nor in TDM there always exist some shortcomings, such as inter-modulation interference, oversampling, low efficiency of channel utilization and troubles in synchronization. In recent fifteen years, many new multiplexing techniques are proposed due to the development of satellite communications, such as multiple carrier system in DCP, which is often used in geostationary meteosat for collecting environment parameters of the earth surface, SCPC, SPADE and code division multiplexing by m-sequences, GOLD sequence, frequency hopping, Waith functions. In this paper, from the standpoint of telemetry, we discuss and compare the advantages and drawbacks of these methods in bandwidth utilization, capacity, interference, and the ratio between performance and cost when they will be used in telemetry.
SponsorsInternational Foundation for Telemetering