Pulse or digital communications – Pulse code modulation – Noise or distortion reduction
Patent
1998-04-14
2000-10-03
Pham, Chi H.
Pulse or digital communications
Pulse code modulation
Noise or distortion reduction
375243, 371 77, 371143, H04B 110, H04B 1404
Patent
active
061283460
ABSTRACT:
An input data signal (102) in a digital signal processing system gets adaptively quantized by performing a LMS error algorithm on a signal of transformed coefficients (113), determining paths of minimum error (202), and forming a three-dimensional matrix (206) representing these paths. Centroids are computed (208) based on the paths of minimum error (206), and these computed centroids are used as part of a next iteration to represent new quantization states and levels.
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Prieto Yolanda
Suarez Jose I.
Doutre Barbara R.
Motorola Inc.
Pham Chi H.
Webster Bryan
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