Configurable Floating-Point FFT Accelerator on FPGA Based Multiple-Rotation CORDIC
Chinese Journal of Electronics(2016)
摘要
Fast Fourier transform (FFT) accelerator and Coordinate rotation digital computer (CORDIC) algorithm play important roles in signal processing. We propose a configurable floating-point FFT accelerator based on CORDIC rotation, in which twiddle direction prediction is presented to reduce hardware cost and twiddle angles are generated in real time to save memory. To finish CORDIC rotation efficientl...
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关键词
fast Fourier transforms,floating point arithmetic,redundant number systems,signal processing
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