A novel approach for diminishing and predicting the error dynamic range in finite wordlength FIR based architectures

Author

Benkrid, Abdsamad ; Benkrid, Khaled ; Crookes, D.

Author_Institution

Sch. of Comput. Sci., Queen´´s Univ., Belfast, UK

Volume

2

fYear

2003

fDate

6-10 April 2003

Abstract

This paper analyses the effects of fixed-point arithmetic in FIR filter based architectures, based on the roundoff statistical noise model. A novel approach, which allows diminishing the error dynamic range and predicting its value according to the wordlength precision, is suggested. This permits the user to preset the fraction precision according to the sought architecture´s precision. The efficiency of this approach is demonstrated through the 2D DWT biorthogonal 9&7 transform.

Keywords

FIR filters; discrete wavelet transforms; fixed point arithmetic; prediction theory; roundoff errors; 2D DWT biorthogonal 9&7 transform; FIR filter; architecture precision; error dynamic range diminishing; finite wordlength architectures; fixed-point arithmetic; fraction precision; prediction; roundoff statistical noise model; wordlength precision; Computer architecture; Computer errors; Digital signal processing; Dynamic range; Finite impulse response filter; Fixed-point arithmetic; Hardware; Quantization; Signal processing; White noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-7663-3

Type

conf

DOI

10.1109/ICASSP.2003.1202433

Filename

1202433