Abstract
This paper presents the architectures, algorithms, and implementation considerations of the digital phase locked loop (DPLL) used for burst-mode packet DS-CDMA receivers. As we know, carrier offset is a rather challenging problem in CDMA system. According to different applications, different DPLL forms should be adopted to correct different maximum carrier offset in CDMA systems. One classical DPLL and two novel DPLL forms are discussed in the paper. The acquisition range of carrier offset can be widened by using the two novel DPLL forms without any performance degradation such as longer acquisition time or larger variance of the phase error. The maximum acquisition range is 1/(4T), whereT is the symbol period. The design can be implemented by FPGA directly.
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Chung, B. Y., Chien, C. and Samueli, H., 1993. Performance analysis of an all-sigital BPSK direct sequence spread-spectrum IF receiver architecture.IEEE Journal on Selected Areas on Communications,11(7): 1096–1107.
De Dong, Y. L. C., Wolters, R. P. C. and Van den Boom, H. P. A., 1997. A CDMA based bidirectional communication system for hybrid fiber-coax CATV networks.IEEE Transactions on Broadcasting,43(2): 127–135.
Gardner, F. M., 1996. Frequency granularity in digital phaselock loops.IEEE Transcations on Communications,44(6): 749–758.
Gaudenzi, R. D. and Elia, C., 1980. Bandlimited quasisynchronous CDMA: a novel satellite access technique for mobile and personal communication systems.IEEE Journal on Selected Areas on Communications,8(3): 1389–1398.
Gaudenzi, R. D., Giannetti, F. and Luise, M., 1996. Advances in satellite CDMA transmission for mobile and personal communications.Proceedings of the IEEE 84 (1): 18–38.
Huang, W., Andonovic, I. and Nakagawa, M., 1998. PLL performance of DS-CDMA systems in the presence of phase noise, multiuser interference, and adding gaussian noise.IEEE Transactions on Communications,46(11): 1507–1515.
Meyer, H. and Ascheid, G., 1989. Synchronization in Digital Communications, Vol. 1. John Wiley & Sons, New York, USA, p. 426.
Nezami, M. K., 2001. DSP-based carrier acquisition and tracking for burst TDMA mobile land and satellite receivers.Applied Microwave & Wireless,13(9): 24–41.
Viterbi, A. J., 1997. Principles of Spread Spectrum Communication. Addison WeSley Publishing Company, p. 73–165.
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Project (No. 60002003) supported by the National Natural Science Foundation of China
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Yun-feng, G., Zhao-yang, Z. & Li-feng, L. DPLL implementation in carrier acquistion and tracking for burst DS-CDMA receivers. J. Zhejiang Univ. Sci. A 4, 526–531 (2003). https://doi.org/10.1631/jzus.2003.0526
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DOI: https://doi.org/10.1631/jzus.2003.0526