The implementation of G.729 speech coder on a 16-bit DSP chip for the CDMA IMT-2000 system

Author

Kim, Jaewon ; Kim, Hyungjung ; Choi, Songin ; You, Younggap

Author_Institution

Syst. Test Team, ETRI, Taejon, South Korea

Volume

45

Issue

2

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

443

Lastpage

448

Abstract

This paper presents the real-time implementation of a conjugate structure-algebraic CELP (CS-ACELP) speech coder which has been chosen as the 8 kb/s speech coder standard (G.729) by ITU-T. The algorithm delivers high speech quality under most of operating conditions. The principles of the G.729 algorithm and the real-time implementation of the algorithm on a 16-bit fixed point DSP chip are addressed. This paper also discusses the DSP H/W module design for speech coders in an infra sub-system and subscriber unit within the CDMA IMT-2000 test-bed system

Keywords

code division multiple access; code standards; digital signal processing chips; land mobile radio; linear predictive coding; telecommunication standards; vocoders; 16 bit; 16-bit DSP chip; CDMA IMT-2000 system; CS-ACELP speech coder; G.729 speech coder; H/W module design; ITU-T; algorithm; conjugate structure-algebraic CELP speech coder; implementation; infra sub-system; speech coder standard; speech quality; subscriber unit; Bit rate; Broadcast technology; Delay; Digital signal processing chips; Filters; Laboratories; Multiaccess communication; Radio broadcasting; Speech coding; System testing;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.793431

Filename

793431