Parameters-based speech packet recovery of adaptive CVSD for wireless PCN applications

Author

Liu, Chia-Horng

Author_Institution

Wireless Commun. Technol. Lab, Chunghwa Telecomm Labs., Taoyuan, Taiwan

Volume

2

fYear

2002

fDate

25-28 Nov. 2002

Firstpage

995

Abstract

Continuous variable slope delta (CVSD) modulation speech coder is a simple and robust speech coding algorithm with good speech coding quality at medium to high data rates. In this paper, the packet loss issue of adaptive CVSD is addressed for wireless personal communication network (PCN) applications. To solve the problem of packet loss, we propose a parameters-based packet recovery algorithm, which utilizes the parameters derived from 16 kb/s adaptive CVSD. A series of computer simulation is conducted and the results are compared with previously proposed algorithms. It is shown that our proposed packet recovery algorithm is robust in radio channel and is a suitable choice for wireless PCN applications.

Keywords

adaptive codes; modulation; packet radio networks; personal communication networks; speech coding; speech intelligibility; 16 kbit/s; adaptive CVSD; computer simulation; continuous variable slope delta modulation; data rates; packet loss; parameters-based packet recovery algorithm; parameters-based speech packet recovery; radio channel; speech coder; speech coding algorithm; speech coding quality; wireless PCN; wireless PCN applications; wireless personal communication network; AWGN; Algorithm design and analysis; Application software; Computer simulation; Modulation coding; Personal communication networks; Robustness; Speech analysis; Speech coding; Vocoders;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, 2002. ICCS 2002. The 8th International Conference on

Print_ISBN

0-7803-7510-6

Type

conf

DOI

10.1109/ICCS.2002.1183282

Filename

1183282