New Nonuniform Transmission and ADPCM Coding System for Improving Both Signal-to-Noise Ratio and Bit Rate

Author

Lahalle, Elisabeth ; Fleury, Gilles ; Zgheib, Rawad

Author_Institution

Dept. of Signal Process. & Electron. Syst., E3S-SUPELEC Syst. Sci., Gif-sur-Yvette, France

Volume

18

Issue

3

fYear

2011

fDate

3/1/2011 12:00:00 AM

Firstpage

149

Lastpage

152

Abstract

Here we address the problem of adaptive digital-transmission systems. New systems based on a nonuniform transmission (NUT) principle are proposed, utilizing a recently proposed algorithm for adaptive identification and reconstruction of AR processes subject to missing data. We propose a new adaptive sampling (nonuniform transmission) method combined with the adaptive reconstruction algorithm. A new NUT-ADPCM coding-decoding system is designed. The proposed system is demonstrated for audio-signal compression and compared to the ADPCM G.726 standard. The new system yields improvements in both signal-to-noise ratio and average bit rate.

Keywords

adaptive modulation; audio coding; differential pulse code modulation; telecommunication standards; ADPCM G.726 standard; ADPCM coding system; NUT-ADPCM coding-decoding system; adaptive digital-transmission systems; adaptive identification; adaptive reconstruction algorithm; audio-signal compression; nonuniform transmission method; signal-to-noise ratio; Adaptive systems; Bit rate; Encoding; Kalman filters; Prediction algorithms; Quantization; Signal to noise ratio; Adaptive reconstruction; adaptive transmission; audio-signal compression;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2010.2102016

Filename

5674070