Proceedings of the 2011 International Technical Meeting of The Institute of Navigation January 24 - 26, 2011

Abstract

This paper proposes a new modulation for a Global NavigationSatellite System (GNSS) to efficiently utilize a givenbandwidth. This modulation, referred to as Time-MultiplexedMulti-Carrier (TMMC), divides the available bandwidth intoN sub-bands such that each sub-band resembles a QuadraturePhase Shift Keying (QPSK) modulation and at the same timeallows the receiver to exploit the benefits of a widebandsignal. The generation of the new signal and its propertiesare described and the performance of TMMC is compared tothe other existing modulation schemes. The benefits of usingTMMC modulation for wideband signals in terms of overcomingthe errors due to propagation channel impairments,continuous wave (CW) interference mitigation and receiverdesign complexity is discussed