NOISE REDUCTION IN DPCM USING RESIDUAL CORRELATION.

Donald D. Zak, Khalid Sayood

Research output: Contribution to journalConference articlepeer-review

Abstract

An approach for reducing the effect of quantization noise is proposed that uses the residual redundancy in the ouput of an n-bit differential pulse-code modulation (DPCM) system to mimic an n plus 1-bit DPCM system. It involves developing a lookup table indexed by the past and present n-bit quantizer outputs to obtain the most probable n plus 1-bit quantizer output. The technique is simple to implement and provides consistent improvement over standard DPCM systems.

Original languageEnglish (US)
Pages (from-to)1138-1141
Number of pages4
JournalConference Record - International Conference on Communications
StatePublished - 1987

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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