Title :
Vector quantization view of ΣΔ modulation
Author :
Thao, Nguyen T. ; Vetterli, Martin
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong
Abstract :
We analyze the behavior of a single-loop ΣΔ modulator using a vector quantization (VQ) approach. We extract the encoder-decoder structure typical of VQ, existing in a ΣΔ modulator. The study of the encoding part gives the intrinsic behavior of the modulator. Bounds to the intrinsic performance of the ΣΔ modulator can be derived through this approach in the oversampling situation, assuming periodicity of the bandlimited input signals
Keywords :
analogue-digital conversion; decoding; delta modulation; encoding; modulators; vector quantisation; ΣΔ modulation; VQ; bandlimited input signals; encoder-decoder structure; oversampling; performance bounds; periodicity; sigma-delta modulation; single-loop ΣΔ modulator; vector quantization; Decoding; Delta modulation; Image coding; Image processing; Lattices; Modulation coding; Neural networks; Speech analysis; Speech processing; Vector quantization;
Conference_Titel :
Speech, Image Processing and Neural Networks, 1994. Proceedings, ISSIPNN '94., 1994 International Symposium on
Print_ISBN :
0-7803-1865-X
DOI :
10.1109/SIPNN.1994.344932
