Broadband interference suppression in DSSS system using fractional Fourier transform

Author

Qi, Lin ; Tao, Ran ; Zhou, Siyong

Author_Institution

Dept. of Electron. Eng., Beijing Inst. of Technol., China

Volume

2

fYear

2003

fDate

14-17 Dec. 2003

Firstpage

1546

Abstract

This paper proposes a linear FM interference rejection method in direct sequence spectrum spread (DSSS) communication system based on signal synthesis using fractional Fourier transform. The detection and parameter estimation of the interference signal are implemented in fractional Fourier domain and the synthesized estimate of jamming signal is then subtracted from the received signal, the interference immunity of the system can thus be improved. Performance analysis and simulation results showed that, the proposed method works effectively in a wide dynamic range of SNR, and also, it is easy in computation and simple in implementation.

Keywords

Fourier transforms; frequency modulation; interference suppression; parameter estimation; signal synthesis; spread spectrum communication; SNR; broadband interference suppression; direct sequence spectrum spread communication system; fractional Fourier transform; jamming signal estimation; linear FM interference rejection; parameter estimation; signal synthesis; Analytical models; Computational modeling; Dynamic range; Fourier transforms; Interference suppression; Jamming; Parameter estimation; Performance analysis; Signal synthesis; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on

Conference_Location

Nanjing

Print_ISBN

0-7803-7702-8

Type

conf

DOI

10.1109/ICNNSP.2003.1281172

Filename

1281172