Research on the Method of CPM Signal Phase Smoothing Based on Different Power Sine Function

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Abstract:

Continuous phase modulation (CPM) signal has the advantages of high bandwidth efficiency, continuous phase, faster decay speed of power spectrum, constant envelope and so on, which is widely used in communication systems. The degree of the phase smoothing is one of main factors that affect the decay speed of CPM signal power spectrum. One method of smoothing CPM signal phase based on different power sine function as the frequency modulation function is proposed. We draw the phase trajectory of baseband signal and the normalized power spectrum by using the MATLAB software. The spectrum characteristics of the signal generated have great improvement compared with MSK signal, which reach the desired goal.

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417-421

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July 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] He Wei, Du Shuanyi, Yu Jie. Continuous phase modulation and capture technology research[J] Electronics Technology, 2008, 21(3): 38-42.

Google Scholar

[2] Linz A, Hendrickson A. Efficient implementation of an I-Q GMSK modulator [J]. Circuits and Syetems H: Analog and Digital Signal Processing, IEEE Transactions on, 1996, 43(1): 14-23.

DOI: 10.1109/82.481470

Google Scholar

[3] Zhou Li, Lu Li. Continuous-phase modulation signals and their phase trajectories [J]. Journal of Nanchang Institute of Aeronautical Technology. 2002. 12. Vol. 16, No. 4: 13-17.

Google Scholar

[4] J.B. Anderson, T. Aulin, C. -E. Sundberg. Digital phase modulation[M]. Plenum press, N.Y., (1992).

Google Scholar

[5] He Wei, Du Shuanyi, Yu Jie. Research into the Technology of Modulation and Acquisition for CPM[J]. Electronic Science and Technology. 2008. 21 (3): 38-42.

Google Scholar