Measuring performance limits of subband adaptive systems

Author

Stenger, Alexander ; Rabenstein, Rudolf ; Weiß, Stephan ; Stewart, Robert W.

Author_Institution

Telecommun. Inst. I, Erlangen-Nurnberg Univ., Germany

Volume

2

fYear

1998

fDate

1-4 Nov. 1998

Firstpage

1176

Abstract

We discuss a method to measure the convergence limits of general subband adaptive systems due to non-ideal filter banks. Aliasing caused in such filter bank presents a distortion to the subband adaptive system which forms a lower limit for the minimum mean squared error. The accuracy of the achievable model is given by the transfer function of the filter bank. To measure both aliasing and filter bank distortions, we employ the measurement technique by Heinle and Schussler (see Proc. IEEE International Conference on Acoustics, Speech and Signal Processing, Atlanta, GA, p.2754-57, 1996). The presented approach is applicable to a wide range of subband adaptive filter systems. Examples for the measured limits are presented.

Keywords

adaptive filters; adaptive signal processing; channel bank filters; convergence of numerical methods; electric distortion; filtering theory; least mean squares methods; measurement; prediction theory; accurate prediction; aliasing; convergence limits; distortion; filter bank distortions; minimum mean squared error; model accuracy; nonideal filter banks; performance limits measurement; subband adaptive filter systems; transfer function; Acoustic distortion; Acoustic measurements; Acoustic signal processing; Adaptive systems; Convergence; Distortion measurement; Filter bank; Measurement techniques; Speech processing; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems & Computers, 1998. Conference Record of the Thirty-Second Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-5148-7

Type

conf

DOI

10.1109/ACSSC.1998.751512

Filename

751512