Abstract
A new class of spreading symbol waveform modulation, namely, generalized spreading symbol waveform (GSSW) modulation is introduced in this paper, which covers most of the spreading symbol waveform types proposed so far for Global Navigation Satellite Systems (GNSS) signals, such as Binary Phase Shift Keying (BPSK), sine Binary Offset Carrier (sine-BOC), cosine-BOC, Multiplex BOC (MBOC) and future Binary Coded Symbol (BCS) modulation signals. At the same time, the GSSW provides a more general frame work, with the potential for new applications of future satellite navigation systems and generating local spreading symbol waveform in navigation receiver, which may be use to solve the BOC ambiguity. The theoretical derivations of the autocorrelation function, the power spectral density, and the tracking performance of the GSSW are also introduced. The advantage of our method in the context of GNSS signals is its simplicity and the fact that it provides unified analytical formulas for most of the existing GNSS signals.
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