Abstract：Continuous Phase Modulated (CPM) signals play a prominent role in modern satellite communication systems and mobile communication systems due to their constant envelope property and bandwidth efficiencies. However, there was no much comprehensive reference concerning the cyclostationarity of the large family of CPM. In this paper, the general band-pass cyclic spectral representations of the continuous phase modulation are derived and analyzed in detail based on the analytical expression of the corresponding base-band cyclic spectra; as well, the relation between cyclic frequency and carrier frequency, code width, peak frequency deviation is obtained with the different modulation indexes. These conclusions are proved by the computer simulations.
2005, Vol. 27 
