OFDM technique has been widely used in wire and wireless communication applications. FFT and IFFT are the key components of OFDM systems. In this paper, to reduce the memory size required for IFFT, we propose a new IFFT design method based on a mappin...
OFDM technique has been widely used in wire and wireless communication applications. FFT and IFFT are the key components of OFDM systems. In this paper, to reduce the memory size required for IFFT, we propose a new IFFT design method based on a mapping method. From simulations, it is shown that the proposed IFFT design method achieves more than 60% area reduction compared with previous IFFT circuits.