摘要
针对目前高速实时信号处理对大点数快速傅里叶变换(FFT)的性能要求越来越高,提出了一种基于二维FFT算法,利用现场可编程门阵列(FPGA)快速实现的方法。该方法以现有的短数据量的FFT核为单元,通过并行处理实现了16M点数的FFT。这样不但解决了FPGA的IP核计算FFT点数少的问题,而且提高了FFT计算的速度。仿真试验结果表明,该方法准确可靠,易于硬件实现,运算速度快。
For high speed real - time signal processing using ultra long fast Fourier transform （FFT） , a fast computed FFT method based on 2 -dimension FFT algorithm is proposed, which uses the abundant resource of the FPGA. This method achieves the max 16M point FFT by parallel processing with the unit of short FFT. It resolves the problem that the FFT point is too short by using IP core and improves the FFT computation speed. It is proved that the algorithm is accurate and reliable.
出处
《无线电通信技术》
2013年第3期86-88,共3页
Radio Communications Technology
关键词
FPGA
二维FFT
并行结构
FPGA
2 -dimension long FFT
parallel implementation
