Modeling of the phase noise influence in the general M-PSK system

This paper deals with the investigation of a simultaneous incidence of an additive thermal noise and a multiplicative phase noise in narrowband low rate satellite communication systems where a multi-state phase shift keying is utilized. For the evaluation of the behavior of both noise types, a new approach is established. It derives mathematical relations of noise powers in chosen significant points of the communication system. The system model is also programmed in Matlab environment. Simulation results serve for comparisons with calculations, while a good agreement is achieved. Both noise types effects on error rates are also examined.