Adaptive filter for suppressing narrow-band interference in DSSS communication

Author

Wang, Junfeng

Author_Institution

Sch. of Comput. Sci. & Technol., Henan Polytech. Univ., Jiaozuo, China

fYear

2011

fDate

27-29 June 2011

Firstpage

162

Lastpage

165

Abstract

In direct sequence spread spectrum (DSSS) communications, the frequency band of the signal is vulnerable to single narrow-band interference, multiple narrowband interference, wideband interference and other interference attacks. Relative to the increased processing gain of spread spectrum systems to suppress interference , adaptive signal processing for interference suppression is low costs, but also more effective. In the paper, the effects of the narrow-band interference on the DSSS system was analyzed, then, the LMS adaptive algorithm was applied to DSSS system before despreading to suppress interferences. Simulation results showed the performance of LMS adaptive filter algorithm for narrowband interference suppression is better, and the error-rate of the system after despreading is reduced in some extent.

Keywords

adaptive filters; adaptive signal processing; code division multiple access; interference suppression; least mean squares methods; spread spectrum communication; DSSS communiciation; LMS adaptive filter; adaptive signal processing; direct sequence spread spectrum; error rate; interference attacks; narrowband interference suppression; wideband interference; Adaptive filters; Bit error rate; Interference suppression; Least squares approximation; Narrowband; Spread spectrum communication; DSSS; LMS; Narrowband Interference;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Science and Service System (CSSS), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-9762-1

Type

conf

DOI

10.1109/CSSS.2011.5972051

Filename

5972051