Time-division-multiplexing tertiary offset carrier modulation for GNSS
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In this paper, we propose Time-Division-Multiplexing Tertiary Offset Carrier (TDMTOC), a novel GNSS modulation based on Tertiary Offset Carrier (TOC) modulation. The TDMTOC modulation multiplexes two three-level signals (i.e., -1, 0, and 1) while crossing over time, and is a type of TOC modulation designed specifically for signal multiplexing. The proposed modulation generates TDMTOC subcarriers of two different phases by simply combining two Binary Offset Carrier (BOC) subcarriers by addition or subtraction. TDMTOC has better correlation and spectral properties than conventional BPSK, BOC, and MBOC modulation techniques, and has good power and spectral efficiency since it can multiplex signals without power loss similar to time division multiplexing. To prove this, we introduce the multiplexing process of TDMTOC, and compare TDMTOC with Binary Phase Shift Keying (BPSK), BOC, Composite BOC (CBOC), and Time Multiplexed BOC (TMBOC) that are currently serviced in GNSS by simulations of various aspects. Through the simulation results, we prove that TDMTOC has better correlation property than modulations currently used in GNSS, less intersystem interference due to its wide spectrum property, and robustness in multipath and noise channel environments.
Abstract
In this paper, we propose Time-Division-Multiplexing Tertiary Offset Carrier (TDMTOC), a novel GNSS modulation based on Tertiary Offset Carrier (TOC) modulation. The TDMTOC modulation multiplexes two three-level signals (i.e., -1, 0, and 1) while crossing over time, and is a type of TOC modulation designed specifically for signal multiplexing. The proposed modulation generates TDMTOC subcarriers of two different phases by simply combining two Binary Offset Carrier (BOC) subcarriers by addition or subtraction. TDMTOC has better correlation and spectral properties than conventional BPSK, BOC, and MBOC modulation techniques, and has good power and spectral efficiency since it can multiplex signals without power loss similar to time division multiplexing. To prove this, we introduce the multiplexing process of TDMTOC, and compare TDMTOC with Binary Phase Shift Keying (BPSK), BOC, Composite BOC (CBOC), and Time Multiplexed BOC (TMBOC) that are currently serviced in GNSS by simulations of various aspects. Through the simulation results, we prove that TDMTOC has better correlation property than modulations currently used in GNSS, less intersystem interference due to its wide spectrum property, and robustness in multipath and noise channel environments.
참고문헌 (17)
- 안창영, "비선형 HPA 환경에서 DFT Spreading 기반 5세대 후보변조기술의 BER 성능 비교와 평가", 한국통신학회논문지, 41(4), pp.415~423 (2016), 한국통신학회
- Ávila-Rodríguez, J. -Á., "On Generalized Signal Waveforms for Satellite Navigation", 박사, pp.2008
- Betz, J. W, "Binary offset carrier modulations for radio navigation", NAVIGATION, 48, pp.227~246 (2001)[DOI]
- Dafesh, P. A., "Coherent Adaptive Subcarrier Modulation (CASM) for GPS Modernization", Proceedings of the 1999 National Technical Meeting of The Institute of Navigation, pp.649~660 (1999)
- Flissi, M., "Performance of new BOC-AW-modulated signals for GNSS system", Eurasip Journal on Wireless Communications and Networking, 2013, pp.1~18 (2013)[DOI]
- Garcia-Pena, A., "Multi-purpose TDM Component for GNSS", Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018), pp.943~962 (2019)
- Irsigler, M, "Criteria for GNSS multipath performance assessment", Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), pp.2166~2177 (2005)
- Kaplan, E. D, "Understanding GPS Principles and Applications" (2017), Artech House
- Kay, S. M, "Fundamentals of Statistical Signal Processing-Detection Theory" (1998), Cambridge Univ. Press
- Kharisov, V, "Optimal aligning of GNSS navigation signals sum", 24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011 (ION GNSS 2011), pp.3141~3155 (2011)
- Nunes, F. D., "Characterization and performance analysis of generalized BOC modulations for GNSS", NAVIGATION, 66, pp.185~197 (2019)[DOI]
- Parkinson, B. W., "The global positioning system: theory and applications, vol. I" (1996), American Institute of Aeronautics and Astronautics, Inc
- Peterson, R. L, "An Introduction to Spread-Spectrum Communications" (1995), Prentice-Hall, Inc
- 신장환, "성상도 재단 기반 위성항법 신호의 상수 포락선 다중화 기법", 제어.로봇.시스템학회 논문지, 26(3), pp.191~198 (2020), 제어·로봇·시스템학회[DOI]
- Shivaramaiah, N. C, "The Galileo E5 AltBOC: understanding the signal structure", Proceedings of the International Global Navigation Satellite Systems Society (IGNSS 2009) (2009)
- Wiener, N, "Generalized harmonic analysis", Acta Mathematica, 55, pp.117~258 (1930)[DOI]
- Yao, Z, "Next-Generation GNSS Signal Design" (2021), Springer