On Efficient Wideband GNSS Signal Design

N.C. Shivaramaiah, A.G. Dempster, C. Rizos

Abstract:	This paper proposes a new modulation for a Global Navigation Satellite System (GNSS) to efficiently utilize a given bandwidth. This modulation, referred to as Time-Multiplexed Multi-Carrier (TMMC), divides the available bandwidth into N sub-bands such that each sub-band resembles a Quadrature Phase Shift Keying (QPSK) modulation and at the same time allows the receiver to exploit the benefits of a wideband signal. The generation of the new signal and its properties are described and the performance of TMMC is compared to the other existing modulation schemes. The benefits of using TMMC modulation for wideband signals in terms of overcoming the errors due to propagation channel impairments, continuous wave (CW) interference mitigation and receiver design complexity is discussed.
Published in:	Proceedings of the 2011 International Technical Meeting of The Institute of Navigation January 24 - 26, 2011 Catamaran Resort Hotel San Diego, CA
Pages:	1163 - 1172
Cite this article:	Shivaramaiah, N.C., Dempster, A.G., Rizos, C., "On Efficient Wideband GNSS Signal Design," Proceedings of the 2011 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2011, pp. 1163-1172.
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