Speech Quality Improvement Based on List Viterbi and Joint Source-Channel Decoding in UMTS

Author

Yuejun Wei ; Kedi Wu ; Bin Xia ; Yuhang Yang

Author_Institution

Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China

Volume

17

Issue

3

fYear

2013

fDate

Mar-13

Firstpage

545

Lastpage

548

Abstract

In this letter, we propose a simple and efficient method, called `Dual-CRC´, to improve speech quality based on the list Viterbi algorithm (LVA) in the Universal Mobile Telecommunications System (UMTS). We also employ the well-known joint source-channel decoding (JSCD) scheme together with LVA decoding to further improve the speech quality. Simulation results show that the two proposed decoders, the Dual-CRC LVA and the combination of the LVA and the JSCD, can significantly improve the speech quality for UMTS, especially in low signal-to-noise ratio and low mean opinion score regions.

Keywords

3G mobile communication; Viterbi decoding; combined source-channel coding; speech coding; JSCD scheme; LVA decoding; UMTS; Universal Mobile Telecommunications System; dual-CRC LVA; joint source-channel decoding scheme; list Viterbi algorithm; signal-to-noise ratio; speech quality improvement; 3G mobile communication; Decoding; Iterative decoding; Joints; Speech; Speech codecs; Viterbi algorithm; AMR speech; List Viterbi decoding; joint source-channel decoding; mean opinion score;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2013.012213.122322

Filename

6423756