NDLI: Improved synchronisation algorithm based on reconstructed correlation function for BOC modulation in satellite navigation and positioning system

Content Provider	IET Digital Library
Author	Xiong, Hailiang Wang, Songhua Gong, Shu Peng, Meixuan Shi, Junyu Tang, Juan
Abstract	With the development of the new generation satellite navigation and positioning systems utilise binary offset carrier (BOC) modulation to improve inter-operability. The main shortcoming of BOC modulation is its ambiguity of searching for a multi-peaked auto-correlation function (ACF). In this study, an improved unambiguous synchronisation algorithm based on compensated correlation reconstructed technique (CCRT) is proposed for the arbitrary-order BOC, which is a new modulation technique for navigation modernisation. The key technique used in this study is to generate local reference signals with different shape vectors. By recombining the piecewise correlation functions of the step-shape coded symbol, a reconstructed correlation function which has only one peak is obtained, and the energy loss is compensated by the ACF. In the proposed algorithm, different shape vectors are employed in different BOC modulation signals. The simulation results demonstrate that the ambiguity problem is completely eliminated. Compared with traditional synchronisation methods, the proposed algorithm shows outstanding detection and multipath mitigation performance. Moreover, the CCRT can be utilised for arbitrary stage BOC modulation signals.
Starting Page	743
Ending Page	750
Page Count	8
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 6, Apr (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.0804
Journal	IET Communications
Publisher Date	2018-01-25
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Binary Offset Carrier Modulation BOC Modulation Galileo Global Navigation Satellite System Global Positioning System Improved Synchronisation Algorithm Improved Unambiguous Synchronisation Algorithm Modulation Modulation And Coding Method Multipeaked Auto-correlation Function Satellite Communication System Synchronisation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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