Adaptive filter using decision-feedback to suppress BPSK interference in spread spectrum systems

Author

Hongyu, Sun ; Libing, Du

fYear

1997

Firstpage

515

Lastpage

518

Abstract

The research results on tone interference suppression are extended to BPSK interference suppression by analyzing the signal characteristics of the BPSK interference. Methods including one called “sign inversion of interference estimation output controlled by error” are promoted and the valid conditions of the method are analyzed. Simulation results show that applying the new method under valid conditions can make more significant improvement (about 26 dB) in the convergence performance of algorithms for suppressing BPSK type narrow band interference than previous results made without the new method

Keywords

adaptive filters; adaptive signal processing; circuit feedback; code division multiple access; convergence of numerical methods; filtering theory; interference suppression; land mobile radio; phase shift keying; radiofrequency interference; spread spectrum communication; BPSK interference suppression; CDMA; adaptive filter; algorithms; convergence performance; decision feedback; error control; interference estimation output; mobile communications; narrow band interference; sign inversion; signal characteristics; simulation results; spread spectrum systems; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility Proceedings, 1997 International Symposium on

Conference_Location

Beijing

Print_ISBN

0-7803-3608-9

Type

conf

DOI

10.1109/ELMAGC.1997.617203

Filename

617203