Fast Radix-32 Approximate DFTs for 1024-Beam Digital RF Beamforming
Fast Radix-32 Approximate DFTs for 1024-Beam Digital RF Beamforming
The discrete Fourier transform (DFT) is widely employed for multi-beam digital beamforming. The DFT can be efficiently implemented through the use of fast Fourier transform (FFT) algorithms, thus reducing chip area, power consumption, processing time, and consumption of other hardware resources. This paper proposes three new hybrid DFT 1024-point DFT …