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Speech Packet Transmission Using the AMR-WB Coder with FEC  

황정준 (충북대학교 전파공학과)
이인성 (충북대학교 전기전자컴퓨터공학부)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.40, no.11, 2003 , pp. 63-71 More about this Journal
Abstract
This paper suggests the packet loss recovery method to communicate in real time in the Internet. To reduce the effects of packet loss, Forward Error Correction (FEC) that adds redundant information to voice packets can be used. Adaptive Multi Rate Wideband(AMR-WB) codec which is recently selected by the Third Generation Partnership Project(3GPP) for GSM and the third generation mobile communication WCDMA system and has also been standardized in ITU-T for providing wideband speech services is used. The major cause for speech qualitly degradation in IP-networks is packet loss. So, We recovered single lossy packet by using FEC method and concealed continued errors. The proposed scheme if evaluated in the Gilbert Internet channel model. The high quality of audio maintained up to 30% packet loss.
Keywords
FEC; AMR-WB;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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