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
Link To Document :
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