Improving DPCM system performance

Author

Dunham, James George ; Ghosh, Amitava

Author_Institution

Dept. of Electr. Eng., Southern Methodist Univ., Dallas, TX, USA

fYear

1989

fDate

27-30 Nov 1989

Firstpage

1890

Abstract

A differential pulse code modulation (DPCM) system provides a fast and inexpensive data compression technique for analog signals. Two methods of improving the performance of DPCM systems are studied: the introduction of delays using incremental tree coding techniques and the design of nonuniform quantizers based upon optimization theory. The performance of matched integrator, perfect integrator, and optimization-based DPCM systems are compared for first order Gauss-Markov sources and mean square error using simulation techniques. Both methods improve system performance. The optimization based DPCM system provides substantial improvement for high bit rates

Keywords

analogue-digital conversion; data compression; encoding; pulse-code modulation; analog signals; data compression; differential pulse code modulation; first order Gauss-Markov sources; high bit rates; incremental tree coding; matched integrator; mean square error; nonuniform quantizers; optimization theory; perfect integrator; simulation; system performance; Bit rate; Data compression; Delay; Design optimization; Gaussian processes; Mean square error methods; Modulation coding; Pulse compression methods; Pulse modulation; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference and Exhibition 'Communications Technology for the 1990s and Beyond' (GLOBECOM), 1989. IEEE

Conference_Location

Dallas, TX

Type

conf

DOI

10.1109/GLOCOM.1989.64266

Filename

64266