Title :
The new design of sigma-delta modulator with lower bits and its application
Author :
Hui-min, Yu ; Yuan-yuan, Liu ; Wang Zhe
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
This paper is devoted to the discussion of a new kind of sigma-delta modulator as signal expression, by which the higher-bit input signal can be represented as a lower-bit digital signal. The quantized noise shaping and noise frequency spectrum are discussed and compared with the conventional sigma-delta modulator. The theoretic analysis shows that the new modulator is stable. A kind of DDC based on this modulator is designed and simulated.
Keywords :
modulators; sigma-delta modulation; noise frequency spectrum; quantized noise shaping; sigma-delta modulator; Delta modulation; Delta-sigma modulation; Digital modulation; Equations; Filters; Frequency; Information science; Noise shaping; Performance analysis; Quantization;
Conference_Titel :
Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
0-7803-7702-8
DOI :
10.1109/ICNNSP.2003.1279365
