Original scientific paper
https://doi.org/10.7305/automatika.2014.01.582
Multiplierless Implementation of Digital Colored Noise Generator
Mladen Vučić
; University of Zagreb, Faculty of Electrical Engineering and Computing, Department of Electronic Systems and Information Processing, Unska 3, 10000 Zagreb, Croatia
Marko Butorac
; University of Zagreb, Faculty of Electrical Engineering and Computing, Department of Electronic Systems and Information Processing, Unska 3, 10000 Zagreb, Croatia
Abstract
Colored noise can be generated by filtering of the white noise. It is a simple task. However, it becomes challenging if high operating speed of the generator is required. The realization of digital filter generally requires one multiplication per coefficient. Therefore, a high operating speed is achieved only with the cost of several generalpurpose multipliers. In this paper, a multiplierless realization of the colored noise generator is proposed. It is based on the filtering of 1-bit random signal by a finite impulse response filter. The design of the generator is described and its implementation is considered. Furthermore, an application is described in which the proposed generator is used in mitigation of undesired effects caused by nonlinearities in an analog to digital converter.
Keywords
Noise generator; Colored noise; Dither generator; Analog to digital converter; ADC; Multiplierless implementation; Field programmable gate arrays; FPGA
Hrčak ID:
126096
URI
Publication date:
16.7.2014.
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