CAJ | 학술논문

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.
ICS수자직방참시직방참계통발전적열점영역화중요방향.저리개소료기우LMS산법적간우저소계통적기본원리,근거연건무선전기본이론급출료계통적경건구체실현,기우FPGA평태묘술료계통각연건모괴적실현방법,측시결과표명간우저소비고체30 dB,통도시연소우8 ns.해계통통용성화확전성강,가이이식도각충동빈간우저소계통중.
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.