Synthesized Binary Offset Carrier Modulation for Interoperable GNSS L1 Band Signals

Dhaval J. Upadhyay, Vijay S. Bhadouria, Parimal J. Majithiya, and Subhash C. Bera

Peer Reviewed

Abstract: This paper presents a constant-envelope modulation scheme, based on a synthesized binary offset carrier (SBOC), for a global navigation satellite system (GNSS) that combines three signals in a nonlinear fashion with unequal amplitudes. The proposed SBOC modulation meets the power spectral density criteria of multiplexed binary offset carrier (MBOC) modulation used in the L1 frequency band (1575.42 MHz) open civilian service interoperable signals for GNSS. This SBOC modulation also allows for the selection of an arbitrary power-sharing ratio between the data and pilot signals. This approach provides better performance than various MBOC(6, 1, 1/11) modulations for narrowband receivers.
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