Abstract
With the purpose of overall performance enhancement, binary offset carrier (BOC) modulation is proposed to replace the existing quadrature phase shift keying (QPSK) signal in the BeiDou system. Multipath performance comparisons between these two signals have been performed using the error envelops providing ideal signal scenarios. However, this method gives only qualitative statements without considering realistic signal characteristics. In order to produce a quantitative assessment of the multipath performance in different environments, power delay profile (PDP) models are built based on field measurement data to simulate the real-world multipath channels. It is proven by the simulation results that the BeiDou BOC(14,2) signal outperforms QPSK(2) signal by 60 % overall error reduction in four typical environments: open, rural, suburban, and urban. The simulation results also testify that double-delat correlator (DDC) has more influence on the BOC(14,2) in comparison to narrower correlator.
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Acknowledgments
This work was financially supported by the National high Technology Research and Development Program of China under Grants No. 2013AA122403. This work was financially supported by the self-determined and innovative research funds of WUT under Grants No.2013-YB-018.
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Wu, D., Chen, W., Li, J., Lu, H., Ji, J. (2016). Multipath Performance Assessments for Future BeiDou BOC Signal. In: Zeng, QA. (eds) Wireless Communications, Networking and Applications. Lecture Notes in Electrical Engineering, vol 348. Springer, New Delhi. https://doi.org/10.1007/978-81-322-2580-5_8
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DOI: https://doi.org/10.1007/978-81-322-2580-5_8
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