Title :
On randomization of digital delta-sigma modulators with DC inputs
Author :
Borkowski, Maciej Jan ; Kostamovaara, Juha
Author_Institution :
Dept. of Electr. & Inf. Eng., Oulu Univ.
Abstract :
This study compares a recently proposed deterministic modulator design method to a design based on dithering. The recent method is based on a delta-sigma modulator periodical behavior analysis. Three different dither generators were used in the study: a linear shift register, rectangular and triangular probability density function random number generators. The study shows that the new method gives as good spectrum as resulting from using the best dither generator, while consuming less hardware
Keywords :
delta-sigma modulation; quantisation (signal); random number generation; random sequences; shift registers; signal detection; deterministic modulator design method; digital delta-sigma modulators; dither generators; linear shift register; periodical behavior analysis; random number generators; rectangular probability density function; triangular probability density function; Delta modulation; Delta-sigma modulation; Design methodology; Hardware; Laboratories; Noise generators; Probability density function; Quantization; Random number generation; Shift registers;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693448
