Modified Binary Coded Symbol Modulation and Its Application for Compass

W. Liu, C. Zhai, X. Zhan, Y. Zhang

Abstract:	As quickly growing of global navigation satellite system community, there is increasing interest in new signals for military and civilian uses. New signals must provide more robustness, higher performance, and greater capacity than already-existing signals and compliant with the radio frequency compatibility rule with existing and planned signals. This paper presents a class of particularly attractive modulations called modified Binary Coded Symbol modulations, and demonstrates their essential characteristics and performance for GNSS. Firstly, the principle of the modified Binary Coded Symbol modulation is described and the general mathematical model of the modulations is introduced. The modified Binary Coded Symbol modulations present important characteristics for GNSS and provide superior performance with regards to noise, interference and multipath when compared to other BCS modulations. Finally, the application of modified Binary Coded Symbol modulations in Compass B1C signal design is investigated. The results show that the proposed modulation can provide potential opportunities for GNSS modernization and construction.
Published in:	Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010) September 21 - 24, 2010 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	1588 - 1596
Cite this article:	Liu, W., Zhai, C., Zhan, X., Zhang, Y., "Modified Binary Coded Symbol Modulation and Its Application for Compass," Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 1588-1596.
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