Analysis of Phase Noise Effect on Receiver-Transmitter Homologous System

Transmitter and receiver homologous system, which contains down-conversion, A/D sampling, digital signal management, D/A recovering and up-conversion, effect the signal passing through the system. This paper presents the corresponding signal transmission model of the system, analysis the influence of phase noise on the signal, and deduces the formula for the first time that describing signal changes caused by phase noise of standard frequency based on the suppose that time of receiving-ransmitting changed already. The conclusion shows that: the factor which is associated with the change rate of standard frequency is introduced to both the carrier frequency and code rate, this factor can be equivalent to a Doppler frequency offset, and the formula of the Doppler offset is deduced, Finally, the experimental results are consistent with the theoretical analysis conclusion.