【摘要】 描述了一种使用FPGA实现FFT处理器的方法,基于按时间抽取(DIT)基-4算法,采用4组RAM并行为蝶型单元提供数据,使用交换器对数据进行重行排序。实验结果表明,该方案保证了运算正确性、运算精度和实现复杂度。提出了两种改进的设计思路及方法,使处理器可以获得更高的处理速度。更多还原

【Abstract】 Design and implementation of FFT with FPGA based on decimate in time(DIT)Radix-4 algorithm was discussed,in which 4 RAM blocks were used to supply data for butterfly unit and switches were used to re-order data.Experimental results showed that,under prerequisite of accuracy and complexity,this method improves the operating clock and processing rate.Two ways to improve FFT processor for higher processing rate were also proposed.更多还原