Abstract
This paper presents a scheme of UQPSK demodulation algorithm on FPGA which is based on direct sequence spread spectrum (DSSS) communication system. The research is focused on synchronization technology of DSSS/UQPSK signal and design of synchronization loops. The main content of this demodulation algorithm includes carrier synchronization loop and DSSS code synchronization loop. Among them, carrier synchronization loop adopts a second-order feedback closed-loop based on the theory of Costas, and DSSS code synchronization loop uses a method of spread spectrum signal acquisition sliding correlation. In the project that the author participated in, the function of DSSS/UQPSK demodulation algorithm was realized successfully on the FPGA platform.
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References
Wang, C., Peng, M., Gao, Y.: The study of unbalanced phase shift keying signal modulation recognition algorithm. Signal Inf. Process. 43(9), 28–32 (2013)
Haiyuan, X., Huang, Z., Zhou, Y.: Detection and performance analysis of UQPSK DSSS signals in satellite communication applications. Sig. Process. 24(3), 361–365 (2008)
Shi, S., Zhang, T., Xin, X.: The study of detection of four order cumulants of the UQPSK signal. Sci. Technol. Eng. 14(20), 257–262 (2014)
Weber, C.L.: Candidate receivers for unbalanced QPSK. In: International Telemetering Conference, vol. XII, pp. 455–464 (1976)
Levitt, B.K., Lesh, J.R., Springett, J.C.: Shuttle/TDRSS Ku-Band telemetry study. Final Report 900-742, Jet Propulsion Laboratory, Pasadena, California (1976)
Braun, W.R., Lindsey, W.C.: Carrier synchronization techniques for unbalanced QPSK signals. In: International Conference on Communications, vol. 1, pp. 1334–1341 (1977)
Zhang, A., Du, Y., Han, F.: Design and implementation of costas loop on FPGA platform. In: Electronic Engineer (2006)
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Ma, Y., Zhang, S., Zhang, J. (2019). Design and Implementation of a DSSS/UQPSK Demodulation Algorithm Based on FPGA. In: Liang, Q., Liu, X., Na, Z., Wang, W., Mu, J., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2018. Lecture Notes in Electrical Engineering, vol 515. Springer, Singapore. https://doi.org/10.1007/978-981-13-6264-4_4
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DOI: https://doi.org/10.1007/978-981-13-6264-4_4
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