High-Speed Four-Parallel 64-Point Radix-2⁴ MDF FFT/IFFT Processor for MIMO-OFDM Systems
Hang Liu, Hanho Lee · ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications · 2008
This paper presents a design and implementation result of a high-speed, low-complexity four data-path 64-point radix-2⁴ FFT/IFFT processor for high-throughput MIMO-OFDM wireless LAN system. The proposed FFT/IFFT processor can provide a higher throughput rate and low hardware complexity by using a four-parallel datapath scheme and a multipath delay feed-back (MDF) structure. The proposed four data-path 64-point MDF FFT/IFFT processor has a throughput rate of up to 600 M sample/s at 150 ㎒ while requiring much smaller hardware complexity satisfying IEEE 802.11n standard requirements.