摘要
针对传统正交相干检波方法存在镜频抑制比、数据吞吐率小以及硬件设计资源消耗大的不足,提出了一种基于多相滤波和简化加法器图结构的数字正交相干检波方法,此方法在有效改善系统正交相干检波性能的同时,提高了数据吞吐率,节省了系统实现的硬件资源。理论仿真结果和实际工程应用都验证了所提方法的有效性。
Considering that traditional digital quadrature coherent detectors present smaller image frequency ratio,smaller data throughput and heavier cost of resources,a new method based on polyphase filter and reduced adder graph is given in this paper. This new method gets better image frequency cancelling,double data throughput and less cost of resources. This method has been used in our project.
出处
《现代电子技术》
2005年第19期7-9,共3页
Modern Electronics Technique
关键词
多相滤波
正交相干检波
CSD
数据吞吐率
polyphase filter
quadrature coherent detector
CSD
data throughput
