Frequency Sweeping Interference Suppressing in DSSS System Using Fractional Fourier Transform
Lin Qi · Dianzi xuebao · 2004
An algorithm for the suppressing of frequency sweeping interference in DSSS system using fractional Fourier transform is proposed in this paper.The basic concepts of interference detection and suppressing in fractional Fourier domain are introduced and two kinds of DSSS receiver with adaptive time-varying excision filters are also provided.The performance analyses have shown that remarkable improvement of SNR and BER are obtained and compared with other two dimensional time-frequency interference suppressing algorithms,it is easy in computation and simple in implementation.