Performance analysis of complex adaptive IIR notch filters

Author

Nishimura, Shotaro ; Hai-Yun Jiang ; Hinamoto, Takao

Author_Institution

Dept. of Electron. & Control Syst. Eng., Shimane Univ., Matsue, Japan

fYear

1998

fDate

1998

Firstpage

502

Abstract

We present a new structure for complex adaptive IIR notch filters which is useful for the rejection of narrowband interference from broadband signals in QPSK communications systems. The proposed structure is based on a gradient algorithm. A performance analysis for convergence properties is developed. It is shown that the convergence speed does not depend on the variance of input white noise. The effects of colored Gaussian noise on convergence speed are analyzed. The results of computer simulation are shown which confirm the theoretical prediction

Keywords

Gaussian noise; IIR filters; adaptive filters; convergence of numerical methods; digital communication; digital filters; filtering theory; gradient methods; interference suppression; notch filters; quadrature phase shift keying; IIR notch filters; QPSK; broadband signals; colored Gaussian noise; communications systems; complex adaptive filters; computer simulation; convergence properties; gradient algorithm; narrowband interference rejection; performance analysis; white noise; Adaptive filters; Communication systems; Convergence; Gaussian noise; IIR filters; Interference; Narrowband; Performance analysis; Quadrature phase shift keying; White noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-4325-5

Type

conf

DOI

10.1109/ICOSP.1998.770260

Filename

770260