DocumentCode
777034
Title
A Postfiltered DPCM Scheme
Author
Sayood, Khalid
Author_Institution
Univ. of Nebraska, Lincoln, NE, USA
Volume
33
Issue
9
fYear
1985
fDate
9/1/1985 12:00:00 AM
Firstpage
1019
Lastpage
1021
Abstract
Quantization noise constitutes the limiting factor on DPCM performance. For a low number of levels in the quantizer, this noise is also correlated. In this correspondence we present a technique for improving the performance of the DPCM system at a very modest cost. The technique involves the use of an adaptive transversal filter at the receiver output to reduce the effects of quantization noise. The filter is trained at the transmitter and periodic updates sent to the receiver.
Keywords
Adaptive filters; Differential pulse-code modulation; Quantization (signal); Signal quantization; Transversal filters; Additive noise; Filtering; Filters; Noise level; Noise reduction; Noise shaping; Pulse modulation; Quantization; Transmitters; Upper bound;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1985.1096413
Filename
1096413
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