基于FPGA的多相滤波实现

Implementation of Polyphase Filter Based FPGA

基于多相滤波结构的分级滤波处理软件无线电下变频能够解决以前存在的瓶颈问题,进行实时有效处理,算法的改进能更快速的执行二次采样过程并进一步减少硬件资源的损耗,滤波输出满足后续DSP处理速率。这篇文章介绍一种下变频的新算法,比较传统算法,给出FPGA仿真结果及在平台SFFSDR上的资源使用比较结果,由结果可看出多相结构的优势。

Software radio down conversion frequency filter processing based on polyphase filter structure＇s graduation＇s can solve the existence bottleneck problem beforehand and carries on the real-time processing effectively. The algorithm improvement make faster solution two-sampling processes and reduces the loss of hardware source. With the output of filter satisfying the following DSP processing speed. This paper introduces the new algorithm of conversion frequency, compared with the traditional algorithm, gives the FPGA simulation result and the comparison with resources use result that show virtue of polyphase filter.