An Unfuzzy Acquisition Algorithm Based on Matched Filtering for BOC (n, n)

摘要

Due to ambiguous acquisition caused by multiple peaks of auto-correlation function (ACF) of Binary Offset Carrier (BOC) modulation technology, an Odd-even Correlation Side-peak Cancellation Technology (OCSCT) is proposed in this paper. The side-peak elimination is obtained by multiplying and transforming the odd-even branch and received signals. In order to make full use of the received signals and further improve the acquisition performance, a corresponding optimization algorithm is put forward. The methods of BPSK-LIKE, ASPeCT and this paper are analyzed and compared. The results show that the proposed side-peak elimination method can effectively solve the acquisition ambiguity problem, and reduce the span of the main peak to half a chip, which further improves the acquisition probability. Compared with the ASPeCT method, the acquisition sensitivity, and the peak to average ratio is increased by 2 dB, 10%, respectively. While the calculation amount is reduced by about 50.11%.