摘要
GSM系统的全称是泛欧数字蜂窝移动通信系统。它在世界三大移动通信系统(美国的ADC系统,日本的PDC系统)中应用的国家和地区最广,其中包括我国。GSM采用了低码率、低运算量的规则脉冲激励-长时线性预测编码(RPE-LTP)。本文在简要介绍了RPE-LTP编码算法后,着重讨论了这种算法在定点数字信号处理芯片TMS320C54X上实现的软、硬件设计和实现中的一些关键技术。
GSM represents Pan European digital mobile radio system. The most famous mobile radio systems of the world(ADC from America, PDC from Japan), are widely used, including in China. GSM uses 13kbit/s regular pulse excitation long term prediction (RPE LTP) linear predictive coder. In this paper, the algorithm of RPE LTP is briefly reviewed at first, then some key techniques for the real time implementation of RPE LTP based on TMS320C54X chip are introduced in detail, and finally experimental results are presented.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
1999年第2期227-231,共5页
Journal of Nanjing University of Aeronautics & Astronautics