Title :
Analysis of a sigma delta modulator with a multi-level quantizer and single-bit feedback
Author :
Park, Sang Ju ; Gray, Robert M. ; Chou, Wu
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., CA, USA
Abstract :
An exact analysis of the quantization error of the single-loop single-stage sigma-delta modulator with a multilevel quantizer and single-bit feedback is given. It is shown that the output sequence of this system is identical to that of a coder using a multilevel digital-to-analog converter (DAC) in the feedback loop provided that an extra bit is available in the forward quantizer
Keywords :
analogue-digital conversion; delta modulation; digital-analogue conversion; feedback; modulators; signal processing; ADC; DAC; feedback loop; forward quantizer; multilevel digital-to-analog converter; multilevel quantizer; output sequence; quantization error; single-bit feedback; single-loop single-stage sigma-delta modulator; Analog-digital conversion; Delta modulation; Delta-sigma modulation; Digital modulation; Digital-analog conversion; Feedback loop; Information systems; Laboratories; Quantization; Robustness;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150773
