Title :
A stable adaptive structure for delta modulation with improved performance
Author :
Aldajani, M.A. ; Sayed, A.H.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
We propose and study an adaptive delta modulator that has improved SNR performance and robustness in tracking highly varying signals. The step-size adaptation used in this modulator is based on information about the absolute value of the quantizer input. The modulator is shown to be free of zero-input limit cycles and is BIBO stable
Keywords :
absolute stability; adaptive codes; delta modulation; time-varying systems; BIBO stability; TV signals; adaptive delta modulation; adaptive delta modulator; coding; highly varying signals; improved SNR performance; quantizer input; speech signals; step-size adaptation; tracking robustness; Adaptive systems; Delta modulation; Equations; Error correction; History; Laboratories; Limit-cycles; Output feedback; Speech coding; TV;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.940539
