Abstract:

Aiming at the problem that the disordered pulse interference in the satellite directsequence spreadspectrum (DSSS) communication system, a finite impluse reponse (FIR) linear transversal interpolation filter based on the improved second order multiple poles interference model is proposed. This article gives the detailed autocorrelation function expression of the model. On the basis of the model, the change of DSSS communication system crosscorrelation values with the interference of disordered pulses is analyzed. Both of analysis results and numerical simulation results show that the FIR linear transversal interpolation filter based on the improved second order multiple poles interference model can suppress the disordered pulse effectively. Compared with the traditional AR model, the improved model has good engineering application in two aspects of multiple carriers and real poles.