Abstract
Although Time-Multiplexed Binary Offset Carrier (TMBOC) signals offer many advantages including efficient bandwidth sharing and high signal tracking accuracy, there is a risk of false signal tracking due to autocorrelation side peaks. To solve this problem, in this paper we propose an unambiguous correlation function for TMBOC signal tracking. The TMBOC subcarrier has a complex shape since the subcarrier is generated by combining two kinds of sine-phased BOC subcarriers. The sine-phased BOC subcarriers forming the TMBOC sub-carrier have common pulses at the center of each subcarrier. Using these common pulses, we propose an unambiguous TMBOC correlation function generation scheme applicable to the TMBOC subcarrier. In numerical results, we confirm that the proposed correlation function provides a better signal tracking performance than those of conventional correlation functions.
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