摘要
变换域处理是一种简单实用的抗干扰方法,其FPGA(现场可编程门阵列)实现具有非常重要的实际意义。影响系统性能的一个关键因素是干扰抑制算法的选择。文中首先分析了采用自适应门限的阈值算法的门限确定方法,然后提出了一种基于模块复用的FPGA实现结构。时序仿真表明该结构能节省芯片资源,且完全能满足系统的实时性。
Transform domain processing is a simple and practical method for interference suppressing. Its FPGA implementation is very important for its practical application. A key factor effecting the performance of the system is the excision algorithm. This paper first analyses the method of defining the threshold of an excision algorithm by adopting adaptive threshold, then an FPGA implenlcntation structure based on module multiplexing is proposed. Finally, the simulation results show that adopting this kind of structure can save chip resources and satisfy the real-time requirement of the system.
出处
《电子工程师》
2006年第11期37-39,55,共4页
Electronic Engineer
关键词
变换域
抗干扰
自适应门限
FPGA
transform domain
interference suppressinn
adaptive threshoht
FPGA
