An interference suppression algorithm based on a novel MDCFT method for DSSS system
Yingjie An, Bin Tian, Yongjun Sun · 2008
Focusing on the interference suppression of Linear Frequency Modulation (LFM) with non-integral parameters in Direct Sequence Spread Spectrum (DSSS), this paper presents a Novel Modified Chirp-Fourier Transform (NMDCFT), which efficiently overcomes the mismatching of MDCFT in non-integral parameters. An efficient algorithm with low computational complexity based on this transform for the jamming migration is proposed. The theory analysis and simulating results show that the algorithm can efficiently deal with mono-component LFM, multi-component LFM, and the mixture of multi-component LFM and multi-component sinusoid jamming.