摘要
ICS数字直放站是直放站系统发展的热点领域和重要方向。这里介绍了基于LMS算法的干扰抵消系统的基本原理,根据软件无线电基本理论给出了系统的硬件具体实现,基于FPGA平台描述了系统各软件模块的实现方法,测试结果表明干扰抵消比高达30 dB,通道时延小于8 ns。该系统通用性和扩展性强,可以移植到各种同频干扰抵消系统中。
ICS digital repeater is the hot-development field and the important direction of repeater system. This paper describes the basic principle of interference cancellation system based on LMS algorithm and the detailed system hardware realization based on software radio theory. The realization method of the software module based on FPGA platform is also discussed. The experiment results show that the interference cancellation rate is more than 30dB and the time delay less than 8ns. This system has the advantages of strong generality and expansibility.
出处
《通信技术》
2013年第1期32-34,共3页
Communications Technology
关键词
干扰抵消系统
数字直放站
软件无线电
interference cancellation system
digital repeater
software radio
