An FFT core for DVB-T/DVB-H receivers
VLSI Design
Long-Point FFT Processing Based on Twiddle Factor Table Reduction
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
An Area Efficient FFT/IFFT Processor for MIMO-OFDM WLAN 802.11n
Journal of Signal Processing Systems
Radix rkFFTs: matricial representation and SDC/SDF pipeline implementation
IEEE Transactions on Signal Processing
Algorithms and pipeline architectures for 2-D FFT and FFT-like transforms
Digital Signal Processing
Design of low-complexity FFT processor for MIMO-OFDM based SDR systems
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
Scalable FFT processor for MIMO-OFDM based SDR systems
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
IEEE Transactions on Circuits and Systems Part I: Regular Papers
MDC FFT/IFFT processor with variable length for MIMO-OFDM systems
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
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In this paper, we propose a new efficient FFT algorithm for OFDM/DMT applications and present its pipeline implementation results. Since the proposed algorithm is based on the radix-4 butterfly unit, the processing rate can be twice as fast as that based on the radix-23 algorithm. Also, its implementation is more area-efficient than the implementation from conventional radix-4 algorithm due to reduced number of nontrivial multipliers like using the radix-23 algorithm. In order to compare the proposed algorithm with the conventional radix-4 algorithm, the 64-point MDC pipelined FFT processor based on the proposed algorithm was implemented. After the logic synthesis using 0.35 μm CMOS technology, the logic gate count for the processor with the proposed algorithm is only about 70% of that for the processor with the conventional radix-4 algorithm. Since the proposed algorithm can achieve higher processing rate and better efficiency than the conventional algorithm, it is very suitable for the OFDM/DMT applications such as the WLAN, DAB/DVB, and ADSL/VDSL systems.