A broadband application of memoryless narrowband GSC/NLMS adaptive beamformers

Author

Peters, D.

Author_Institution

Nortel Technol., Montreal, Que., Canada

Volume

5

fYear

1999

fDate

1999

Firstpage

2989

Abstract

The adaptive performance of the normalized least mean-squares algorithm in the context of the generalized sidelobe canceller beamformer is considered. The implications of both the convergence behaviour and the misadjustment on various beamforming applications are discussed. In particular, an important case is identified for which there is near-instantaneous convergence. A misadjustment limit for which coherent post-processing is viable is also derived. Finally, a novel approach to coherent broadband beamforming is introduced and then tested via simulation

Keywords

adaptive filters; adaptive signal processing; array signal processing; convergence of numerical methods; filtering theory; interference suppression; least squares approximations; memoryless systems; adaptive filter; adaptive performance; beamforming applications; broadband application; coherent broadband beamforming; coherent post-processing; convergence behaviour; generalized sidelobe canceller beamformer; memoryless narrowband GSC/NLMS adaptive beamformers; misadjustment limit; normalized least mean-squares algorithm; simulation; Adaptive filters; Anisotropic magnetoresistance; Array signal processing; Business; Convergence; Frequency; Interference; Least squares approximation; Narrowband; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on

Conference_Location

Phoenix, AZ

ISSN

1520-6149

Print_ISBN

0-7803-5041-3

Type

conf

DOI

10.1109/ICASSP.1999.761391

Filename

761391