Fast Filter Bank Technique for Multiple Antennas Wireless Communication System

Fast Fourier transform (FFT) and invert fast Fourier transform (IFFT) is widely used in wireless communication field such as spectrum analysis and multicarrier communication, while the FFT/IFFT filter bank has poor frequency response due to the poor first side-lobe level. It requires lots of resource to achieve the better performance. In this paper, FFB structure is applied to multiple antennas wireless communication system to overcome the disadvantages of FFT/IFFT.