摘要
为解决软件无线电领域无法实时处理宽带中频信号的问题,研究了软件无线电中频数字化处理技术的基础理论和关键技术。设计实现了基于CPCI架构的中频数字化处理平台,介绍该平台的设计原理,并给出平台所用器件的原理框图。借助摩托罗拉超短波电台调制信号,通过该平台上实现的数字下变频和基于正交解调的FM算法对该信号的成功处理,验证了该设计平台能够实时处理宽带中频信号。
In order to solve the problems that the wide band intermediate frequency signal can＇t be processed in the field of software radio timely,several key technologies and basic theories in the field of software radio focused on digital intermediate frequency technology are studied and discussed. An intermediate frequency digital processing platform built on CPCI architecture is designed and realized, the theory of the platform and the principle scheme are presented. With the signal of Motorola RF radio,the platform is validated by digital down frequency conversion and orthogonal FM demodulation on the actual signal.
出处
《现代电子技术》
2010年第3期13-16,共4页
Modern Electronics Technique
关键词
软件无线电
中频数字化
数字下变频
正交解调
software radio
digital intermediate frequency
digital down frequency conversion
orthogonal demodulation
