AMR Codec Mode Selection in TD-SCDMA

摘要：

Adaptive Multi-Rate (AMR) codec was standardized for TD-SCDMA by 3GPP (3rd Generation Partnership Project) in 1999. Comparing with previous GSM speech codec, one of AMR codes characteristics is offering adaptive code rates. To AMR codec mode, how to switch from one rate to another according to the radio network condition is a research hotspot in recent years. This paper gives a description about the process of AMR codec mode selection. Applying the MCD (Mel-cepstral Distance) measure to the analysis of performances of AMRs eight rates, this paper gives a division to the eight rates. And then, by doing experiments, an ACS with better performance is concluded.

关键词： AMR codec mode selection MCD threshold ACS

作者: Tao Huang Xiaowen Li Shitao Li

作者单位: Chongqing University of Posts and Telecommunications,Chongqing 400065,P.R.China, Chongqing University of Posts and Telecommunications, Chongqing 400065,P.R.China

会议类型: 国际会议

会议名称: 首届无线通信跨层设计国际学术研讨会(1st International Workshop on Cross Layer Design)

会议地点: 济南

会议语种:英文

页码: 1-4

在线出版日期: 2007-09-20（万方平台首次上网日期，不代表论文的发表时间）