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 language||English (US)|
|Number of pages||4|
|Journal||Conference Record - International Conference on Communications|
|State||Published - 1987|
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering