Fixed codebook design for ACELP coder using algebraic trellis vector codes

Author

Kim, Sungjin ; Park, Heewan ; Kang, Sangwon ; Fischer, Thomas R.

Author_Institution

Dept. of Electron. & Commun. Eng., Hanyang Univ., Ansan, South Korea

fYear

2011

fDate

12-14 Dec. 2011

Firstpage

1

Lastpage

3

Abstract

In this paper, a block-constrained trellis coded vector quantization (BC-TCVQ) algorithm is combined with an algebraic codebook to produce an algebraic trellis vector code (ATVC) to be used in ACELP coding. In ATVC, the set of allowed algebraic codebook pulse position is expanded, and the trellis branches are labeled with these subsets. Viterbi algorithm is used to select the excitation codevector. The ATVC block code is used as the fixed codebook of the AMR-NB 12.2kbps mode, reducing complexity compared to the conventional algebraic codebook.

Keywords

Viterbi decoding; algebraic codes; block codes; trellis codes; vector quantisation; ACELP coder; BC-TCVQ algorithm; Viterbi algorithm; algebraic trellis vector codes; block-constrained trellis coded vector quantization; fixed codebook design; Computational complexity; Convolutional codes; Encoding; Speech; Vector quantization; Vectors; Viterbi algorithm; Speech coding; Viterbi algorithm; algebraic CELP; trellis coded vector quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Communication Systems (ICSPCS), 2011 5th International Conference on

Conference_Location

Honolulu, HI

Print_ISBN

978-1-4577-1179-4

Electronic_ISBN

978-1-4577-1178-7

Type

conf

DOI

10.1109/ICSPCS.2011.6140838

Filename

6140838