Title :
A Technique for Suppressing Periodic Linear Frequency Modulation Interference in PN Spread-Spectrum Systems
Author :
Huan, Hao ; Tao, Ran
Author_Institution :
Dept. of Electron. Eng., Beijing Inst. of Technol., Beijing, China
Abstract :
First, this paper analyzes the performance of the linear frequency modulation (LFM) interference in PN spread-spectrum communication systems. Second, in the light of suppressing the side-lobe of periodic LFM in fractional Fourier transform (FRFT) domain, a method combined transform-domain and time-domain is proposed, this method improves the processing gain and makes the distribution of the signal suppressed approximately Gaussian which is helpful for code acquisition. Finally, the simulation results show the method is valid.
Keywords :
Fourier transforms; frequency modulation; interference suppression; spread spectrum communication; PN spread-spectrum communication systems; code acquisition; fractional Fourier transform domain; periodic LFM; periodic linear frequency modulation interference suppression; processing gain; side-lobe; signal distribution; time-domain; transform-domain; Bandwidth; Fourier transforms; Interference; Signal processing algorithms; Signal to noise ratio; Time domain analysis; Time frequency analysis; fractional Fourier transform; interference; periodic frequency modulation; suppressing;
Conference_Titel :
Pervasive Computing Signal Processing and Applications (PCSPA), 2010 First International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-8043-2
Electronic_ISBN :
978-0-7695-4180-8
DOI :
10.1109/PCSPA.2010.140
