| 摘要 |
The invention concerns a process and a system for digital stepped-phase modulation of a modulation carrier, with which a discrete phase step at constant amplitude is carried out for each digital symbol of a signal to be transmitted. The stepped phases of the modulation carrier are dependent on both the symbol to be transmitted at the present time and on one or more of the symbols previously transmitted. The process and the system of the invention can be used, for instance, in broadcasting especially in mobile radio telephony. |
