LTE系统中多速率采样滤波器的设计  

Design of multi-rate sampling filter in LTE system

作　　者：陈娜[1] 郑建宏[2] 冯侨[1] 

机构地区：[1]重庆邮电大学信科股份有限公司3G研究院,重庆400065 [2]重庆邮电大学移动通信工程研究中心,重庆400065

出　　处：《数字通信》2010年第1期85-89,共5页Digital Communications and Networks

摘　　要：在LTE(long term evolution)系统中对OFDM基带信号采样进行数字化处理时,随着系统带宽变化,采样速率也随之变化,但是根据协议,发送端采样速率固定,此时需要对信号进行过采样。通过对滤波器的分析比较以及仿真设计,得出结论,LTE系统中可以使用半带滤波器实现信号的过采样。When dealing with the OFDM baseband signal in the long term evolution （LTE） system, the sampling rate changes with the variety of system bandwidth. However, according to the specification in 3GPP, the sampling rate is fixed at the transmitter, and the signal should be over-sampled. This paper analyzes and compares some muhi-rate sampling filters and gets the conclusion that half band fiher is a suitable multi-rate sampling filter in the LTE system.

关 键 词：多速率采样 信号内插 级联积分梳状滤波器 半带滤波器 

分 类 号：TN713[电子电信—电路与系统]