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A Unified Dual-frequency Constant Envelope Multiplexing Design Framework for Modernised GNSS Signals

Published online by Cambridge University Press:  12 July 2018

Tao Yan Open the ORCID record for Tao Yan [Opens in a new window] ,
Bo Qu ,
Ying Wang ,
Guoyong Wang ,
Wenying Lei ,
Lang Bian  and
Yansong Meng
Tao Yan*
Affiliation:
(Academy of Space Electronic Information Technology, Xi'an, 710100, China)
Bo Qu
Affiliation:
(Academy of Space Electronic Information Technology, Xi'an, 710100, China)
Ying Wang
Affiliation:
(Academy of Space Electronic Information Technology, Xi'an, 710100, China)
Guoyong Wang
Affiliation:
(Academy of Space Electronic Information Technology, Xi'an, 710100, China)
Wenying Lei
Affiliation:
(Academy of Space Electronic Information Technology, Xi'an, 710100, China)
Lang Bian
Affiliation:
(Academy of Space Electronic Information Technology, Xi'an, 710100, China)
Yansong Meng
Affiliation:
(Academy of Space Electronic Information Technology, Xi'an, 710100, China)
*
(E-mail: iamyantao@126.com)
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Abstract

In the field of modernised Global Navigation Satellite System (GNSS) signal design, several Dual-frequency Constant Envelope Multiplexing (DCEM) methods have been recently proposed. However, the existing DCEM methods, such as Alternative Binary Offset Carrier (AltBOC), generalised AltBOC and Asymmetric Constant Envelope Binary Offset Carrier (ACE-BOC), are only applied in some special cases. In this paper, we present a unified DCEM design framework for GNSS signals. The existing DCEM methods can be unified in this framework. First, the signal components at two carrier frequencies are combined into two single-frequency constant envelope signals. Then, the linear sum of dual-frequency signals with non-constant envelopes is obtained. Finally, the linear sum is converted into the corresponding DCEM signal by solving an optimisation problem. The proposed design framework has no strict constraints on the number, power ratio and phase relationship of the signal components. Moreover, some special design cases under this framework are also analysed in detail. The analytical results show that the proposed design method can reach higher multiplexing efficiency compared with the existing methods. Based on the proposed method, we suggest a scheme to multiplex the BeiDou regional signals and global signals at the B2 frequency. The simulation results of correlation functions and Power Spectrum Density (PSD) verify the correctness and effectiveness of the proposed design method.

Keywords

Constant envelope multiplexingMultiplexing efficiencyLook-up tableBeiDou B2GNSS signals
Type
Research Article
Information
The Journal of Navigation , Volume 71 , Issue 6 , November 2018 , pp. 1511 - 1530
Copyright
Copyright © The Royal Institute of Navigation 2018 

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References

REFERENCES

Betz, J.W. (2000). Design and Performance of Code Tracking for the GPS M Code Signal. ION GPS 2000, 2140–2150.Google Scholar
Betz, J.W., Blanco, M. A., Cahn, C.R., Dafesh, P.A., Hegarty, C J., Hudnut, K.W., Kasemsri, V., Keegan, R., Kovach, K., Lenahan, L.S., Ma, H.H., Rushanan, J.J., Sklar, D., Stansell, T.A., Wang, C.C. and Yi, S. K. (2006). Description of the L1C Signal. ION GNSS 2006, 2080–2091.Google Scholar
Betz, J.W., Blanco, M.A., Chan, C.R., Dafesh, P.A. and Hegarty, C.R. (2007). Enhancing the Future of Civil GPS: Overview of the L1C Signal. InsideGNSS, Spring 2007, 42–49.Google Scholar
Butman, S. and Timor, U. (1972). Interplex-An Efficient Multichannel PSK/PM Telemetry System. IEEE Transaction on Communications, 20(3), 415–419.Google Scholar
China Satellite Navigation Office. (2013). Report on the development of BeiDou navigation satellite system (Version 2.2).Google Scholar
Dafesh, P.A. and Cahn, C.R. (2009). Phase-Optimized Constant-Envelope Transmission (POCET) Modulation Method for GNSS Signals. ION GNSS 2009, 2860–2866.Google Scholar
Dafesh, P.A., Nguyen, T.M. and Lazar, S. (1999). Coherent Adaptive Subcarrier Modulation (CASM) for GPS Modernization. ION NTM 1999, 649–660.Google Scholar
Fan, T., Lin, V.S., Wang, G.H. and Dafesh, P.A. (2008). Study of Signal Combining Methodologies for Future GPS Flexible Navigation Payload (Part II). Position, Location and Navigation Symposium, 2008 IEEE/ION, 1079–1089.Google Scholar
Fontana, R.D., Cheung, W., Novak, P.M. and Stansell, T. M. (2001). The New L2 Civil Signal. ION GPS 2001, 617–631.Google Scholar
Guo, F., Yao, Z. and Lu, M. (2017). BS-ACEBOC: a generalized low-complexity dual-frequency constant-envelope multiplexing modulation for GNSS. GPS Solutions, 21(2), 561–575.Google Scholar
Huang, X., Zhu, X. and Ou, G. (2015a). Constant-envelope dual QPSK-like modulation and its generalised form for modern GNSS signals. Electronics Letters, 51(2), 175–177.Google Scholar
Huang, X., Zhu, X., Tang, X., Gong, H. and Ou, G. (2015b). GCE-BOC Modulation: A Generalized Multiplexing Technology for Modern GNSS Dual-Frequency Signals. CSNC 2015, Volume II, 47–55.Google Scholar
Jasbir, S.A. (2004). Introduction to optimum design (2nd ed). Elsevier Academic Press, 324–328.Google Scholar
Lestarquit, L. Artaud, D. and Issler, J. L. (2008). AltBOC for Dummies or Everything You Always Wanted To Know About AltBOC. ION GNSS 2008, 961–970.Google Scholar
Liu, W., Du, G., Zhan, X. and Zhai, C. (2010). Assessment of radio frequency compatibility relevant to the Galileo E1/E6 and compass B1/B3 bands. The Journal of Navigation, 63, 419–434.Google Scholar
Montenbruck, O., Hauschild, A., Steigenberger, P., Hugentobler, U., Teunissen, P. and Nakamura, S. (2013). Initial assessment of the COMPASS/BeiDou-2 regional navigation satellite system. GPS Solutions, 17, 211–222.Google Scholar
OS SIS ICD. (2016). Galileo Open Service Signal In Space Interface Control Document, Issue 1.3, 5–8.Google Scholar
Rebeyrol, E., Julien, O., Macabiau, C., Ries, L., Delatour, A. and Lestarquit, L. (2007). Galileo civil signal modulations. GPS Solutions, 11(3), 159–171.Google Scholar
Shivaramaiah, N.C. and Dempster, A.G. (2013). Time-Multiplexed Offset-Carrier QPSK for GNSS. IEEE Transactions on Aerospace and Electronic Systems, 49(2), 1119–1138.Google Scholar
Sleewaegen, J.M. and Wilde, W.D. (2004). Galileo AltBOC Receiver. Proceedings of ENC GNSS 2004, Rotterdam, Holland.Google Scholar
Spilker, J.J. Jr and Van Dierendonck, A.J. (1999). Proposed New Civil GPS Signal at 1176.45 MHz. ION GPS 1999, 1717–1726.Google Scholar
Spilker, J.J. Jr. and Richard, S. (1998). Code Multiplexing via Majority Logic for GPS Modernization. ION GPS 1998, 265–273.Google Scholar
Tang, Z., Zhou, H., Hu, X. Ran, Y., Liu, Y. and Zhou, Y. (2010). Research on performance evaluation of Compass signal. Scientia Sinica Physics, Mechanics & Astronomy, 40(5), 592–602.Google Scholar
Tang, Z., Zhou, H., Wei, J., Yan, T. and Liu, Y. (2011). TD-AltBOC: A new COMPASS B2 modulation. Science China-Physics Mechanics & Astronomy, 54(6), 1014–1021.Google Scholar
Yan, T., Tang, Z., Wei, J., Qu, B. and Zhou, Z. (2015). A Quasi-constant Envelope Multiplexing Technique for GNSS Signals. The Journal of Navigation, 68(4), 791–808.Google Scholar
Yan, T., Wei, J., Tang, Z. and Zhou, Z. (2016). General AltBOC Modulation with Adjustable Power Allocation Ratio for GNSS. The Journal of Navigation, 69(03), 531–560.Google Scholar
Yao, Z. and Lu, M. (2013). Design, Implementation, and Performance Analysis of ACE-BOC Modulation. ION GNSS+ 2013, 361–368.Google Scholar
Yao, Z., Zhang, J. and Lu, M. (2016). ACE-BOC dual-frequency constant envelope multiplexing for satellite navigation. IEEE Transactions on Aerospace and Electronic Systems, 52(1), 466–485.Google Scholar
Zhang, K. (2013). Generalised constant-envelope DualQPSK and AltBOC modulations for modern GNSS signals. Electronics Letters, 49(21), 1335–1337.Google Scholar
Zhang, K., Li, Y., Zhou, H. and Wang, F. (2012). Analytical Transmission Model of POCET Technique for Compass B1 and B3 Signals. ION GNSS 2012, 277–285.Google Scholar
Zhang, K., Zhou, H. and Wang, F. (2013). Unbalanced AltBOC: a Compass B1 candidate with generalized MPOCET technique. GPS Solutions, 17(2), 153–164.Google Scholar
Zhu, L., Yao, Z., Lu, M. and Feng, Z. (2012). Non-symmetrical AltBOC multiplexing for Compass B1 signal design. Journal of Tsinghua University, 52, 869–873.Google Scholar