Designing Algebraic Trellis Code as a New Fixed Codebook Module for ACELP Coder
Summary :
In this paper, a block-constrained trellis coded quantization (BC-TCQ) algorithm is combined with an algebraic codebook to produce an algebraic trellis code (ATC) to be used in ACELP coding. In ATC, the set of allowed algebraic codebook pulse positions is expanded, and the expanded set is partitioned into subsets of pulse positions; the trellis branches are labeled with these subsets. The list Viterbi algorithm (LVA) is used to select the excitation codevector. The combination of an ATC codebook and LVA trellis search algorithm is denoted as an ATC-LVA block code. The ATC-LVA block code is used as the fixed codebook of the AMR-WB 8.85 kbps mode, reducing complexity compared to the conventional algebraic codebook.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E91-B No.3 pp.972-974
- Publication Date
- 2008/03/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1093/ietcom/e91-b.3.972
- Type of Manuscript
- LETTER
- Category
- Multimedia Systems for Communications
Authors
Keyword
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Jakyong JUN, Sangwon KANG, Thomas R. FISCHER, "Designing Algebraic Trellis Code as a New Fixed Codebook Module for ACELP Coder" in IEICE TRANSACTIONS on Communications,
vol. E91-B, no. 3, pp. 972-974, March 2008, doi: 10.1093/ietcom/e91-b.3.972.
Abstract: In this paper, a block-constrained trellis coded quantization (BC-TCQ) algorithm is combined with an algebraic codebook to produce an algebraic trellis code (ATC) to be used in ACELP coding. In ATC, the set of allowed algebraic codebook pulse positions is expanded, and the expanded set is partitioned into subsets of pulse positions; the trellis branches are labeled with these subsets. The list Viterbi algorithm (LVA) is used to select the excitation codevector. The combination of an ATC codebook and LVA trellis search algorithm is denoted as an ATC-LVA block code. The ATC-LVA block code is used as the fixed codebook of the AMR-WB 8.85 kbps mode, reducing complexity compared to the conventional algebraic codebook.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.3.972/_p
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@ARTICLE{e91-b_3_972,
author={Jakyong JUN, Sangwon KANG, Thomas R. FISCHER, },
journal={IEICE TRANSACTIONS on Communications},
title={Designing Algebraic Trellis Code as a New Fixed Codebook Module for ACELP Coder},
year={2008},
volume={E91-B},
number={3},
pages={972-974},
abstract={In this paper, a block-constrained trellis coded quantization (BC-TCQ) algorithm is combined with an algebraic codebook to produce an algebraic trellis code (ATC) to be used in ACELP coding. In ATC, the set of allowed algebraic codebook pulse positions is expanded, and the expanded set is partitioned into subsets of pulse positions; the trellis branches are labeled with these subsets. The list Viterbi algorithm (LVA) is used to select the excitation codevector. The combination of an ATC codebook and LVA trellis search algorithm is denoted as an ATC-LVA block code. The ATC-LVA block code is used as the fixed codebook of the AMR-WB 8.85 kbps mode, reducing complexity compared to the conventional algebraic codebook.},
keywords={},
doi={10.1093/ietcom/e91-b.3.972},
ISSN={1745-1345},
month={March},}
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TY - JOUR
TI - Designing Algebraic Trellis Code as a New Fixed Codebook Module for ACELP Coder
T2 - IEICE TRANSACTIONS on Communications
SP - 972
EP - 974
AU - Jakyong JUN
AU - Sangwon KANG
AU - Thomas R. FISCHER
PY - 2008
DO - 10.1093/ietcom/e91-b.3.972
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2008
AB - In this paper, a block-constrained trellis coded quantization (BC-TCQ) algorithm is combined with an algebraic codebook to produce an algebraic trellis code (ATC) to be used in ACELP coding. In ATC, the set of allowed algebraic codebook pulse positions is expanded, and the expanded set is partitioned into subsets of pulse positions; the trellis branches are labeled with these subsets. The list Viterbi algorithm (LVA) is used to select the excitation codevector. The combination of an ATC codebook and LVA trellis search algorithm is denoted as an ATC-LVA block code. The ATC-LVA block code is used as the fixed codebook of the AMR-WB 8.85 kbps mode, reducing complexity compared to the conventional algebraic codebook.
ER -
English
