WCDMA直放站中数字上变频器的设计  

Design of the DUC in WCDMA Repeater

作　　者：罗睿智[1] 

机构地区：[1]重庆邮电大学,重庆400065

出　　处：《信息通信技术》2011年第2期71-73,共3页Information and communications Technologies

摘　　要：数字上变频器(DUC)的实现主要在于插值滤波器的设计。本文首先根据3GPP规范提出了滤波器的设计指标,然后分析和比较插值滤波器单级实现方案,方案中采用多级插值滤波器,并选用RRC(根升余弦滤波器)和HB(半带滤波器)这两种特殊的数字滤波器完成插值和滤波,最后通过仿真验证:结果满足设计要求。The realization of digital up-converter mainly lies in the design of the interpolation fi lter.According to the 3GPP standard,the design requirements of the interpolation fi lter are fi rst put forward.After analyzing and comparing with the interpolation fi lter in mono-stage implementation,this paper carries out multi-stage interpolation fi lter.Then the special digital fi lters,RRC（Root-Raised Cosine） and HB（Half Band） are selected to interpolate and fi lter.At last the results show the simulation meets the design requirements.

关 键 词：数字上变频器 根升余弦滤波器 半带滤波器 

分 类 号：TN929.533[电子电信—通信与信息系统] TN773[电子电信—信息与通信工程]