摘要
3G网络是一个宽覆盖的网络,如果都用基站将导致成本巨大。利用廉价、高性能的数字直放站是解决有效覆盖的重要方法。文中分析了3G数字直放站的接口标准,给出了设备的设计原理。为了提高设备集成化水平,降低设备的价格,从数字化中频信号处理技术出发,重点分析了数字上变频模块的工作原理及其典型芯片AD6633的功能结构,给出了利用AD6633构成数字直放站上变频模块的一种实现方案。该芯片提供了完善的滤波器设计软件,可以设置上变频模块的该滤波器的工作参数。给出了该上变频模块的整体滤波性能。
3G network is a wide-area-covered network. If only base station are used, then there would be huge construction cost. Use of low cost and high performance digital repeater is one important method to solve coverage problem. Based on an analysis of interface standard for 3G digital repeater, a design scheme of repeater is presented. To increase the integration level of device and reduce the price, digital intermediate frequency signal processing is used and special attention given to the analysis of digital up-converter module principle and the functional module of typical chip AD6633. A This chip provides a design tool for build - in filters , which overall filtering performance is presented in this article. design concept using AD6633 is also described. can set and test filter operation parameters . The overall filtering performance is presented in this article.
出处
《电子工程师》
2008年第7期22-24,共3页
Electronic Engineer
关键词
数字上变频
3G
数字直放站
移动通信
digital up-converter
3 G
digital repeater
mobile communication
