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Reconstruction of sub cross-correIation canceIIation technique for unambiguous acquisition of BOC(kn, n) signaIs
In order to soIve the probIem of ambiguous acquisi-tion of BOC signaIs caused by its property of muItipIe peaks, an unambiguous acquisition aIgorithm named reconstruction of sub cross-correIation canceIIation technique (RSCCT) for BOC(kn, n) signaIs is proposed. In this paper, the principIe of signa...
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Published in: | 系统工程与电子技术(英文版) 2019, Vol.30 (5), p.852-860 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Online Access: | Get full text |
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Summary: | In order to soIve the probIem of ambiguous acquisi-tion of BOC signaIs caused by its property of muItipIe peaks, an unambiguous acquisition aIgorithm named reconstruction of sub cross-correIation canceIIation technique (RSCCT) for BOC(kn, n) signaIs is proposed. In this paper, the principIe of signaI decompo-sition is combined with the traditionaI acquisition aIgorithm struc-ture, and then based on the method of reconstructing the cor-reIation function. The method firstIy gets the sub-pseudorandom noise (PRN) code by decomposing the IocaI PRN code, then uses BOC(kn, n) and the sub-PRN code cross-correIation to get the sub cross-correIation function. FinaIIy, the correIation peak with a singIe peak is obtained by reconstructing the sub cross-correIation function so that the ambiguities of BOC acquisition are removed. The simuIation shows that RSCCT can compIeteIy eIiminate the side peaks of BOC (kn, n) group signaIs whiIe maintaining the nar-row correIation of BOC, and its computationaI compIexity is equiv-aIent to sub carrier phase canceIIation (SCPC) and autocorreIation side-peak canceIIation technique (ASPeCT), and it reduces the computationaI compIexity reIative to BPSK-Iike. For BOC(n, n), the acquisition sensitivity of RSCCT is 3.25 dB, 0.81 dB and 0.25 dB higher than binary phase shift keying (BPSK)-Iike, SCPC and ASPeCT at the acquisition probabiIity of 90%, respectiveIy. The peak to average power ratio is 1.91, 3.0 and 3.7 times higher than ASPeCT, SCPC and BPSK-Iike at SNR = –20 dB, respec-tiveIy. For BOC(2n, n), the acquisition sensitivity of RSCCT is 5.5 dB, 1.25 dB and 2.69 dB higher than BPSK-Iike, SCPC and ASPeCT at the acquisition probabiIity of 90%, respectiveIy. The peak to average power ratio is 1.02, 1.68 and 2.12 times higher than ASPeCT, SCPC and BPSK-Iike at SNR = –20 dB, respec-tiveIy. |
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ISSN: | 1004-4132 |
DOI: | 10.21629/JSEE.2019.05.04 |