Title :
Area-efficient FFT processors for OFDM systems
Author :
Sung Kyung Shin ; Myung Hoon Sunwoo
Author_Institution :
Sch. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea
Abstract :
This paper proposes an area-efficient 128-point fast Fourier transform (FFT) processor for OFDM systems. The modified decomposition method and complex constant multiplier can reduce the number of twiddle factor multipliers and its ROMs. Compared with the existing FFT processor, the proposed processor can reduce the number of multipliers by 30% and the size of ROM by 62% respectively, without increase of delay elements.
Keywords :
OFDM modulation; fast Fourier transforms; read-only storage; OFDM system; ROM; area-efficient FFT processor; complex constant multiplier; fast Fourier transform processor; modified decomposition method; orthogonal frequency division multiplexing system; read only memory; twiddle factor multiplier; Delays; Hardware; OFDM; Random access memory; FFT; OFDM; mixed-radix; pipeline;
Conference_Titel :
SoC Design Conference (ISOCC), 2014 International
DOI :
10.1109/ISOCC.2014.7087641
