Performance analysis of different radix2 structure

The manifestation of radix2 was a highlight in the design of efficient FFT hardware architectures. Afterward, radix2 was extended to R2MDC and R2SDF However, radix2 was only planned for (SDF) single-path delay feedback structures, other than not intended for feed-forward ones, also called (MDC) multi-path delay Commutator. In this paper, the design of R2MDC (Radix2 Multipath Delay Commutator and R2SDF (Radix2 Single path Delay Feedback is presented. The number of delay element in R2MDC is more than R2SDF. Hence frequency utilization in R2MDC is less than R2SDF FFT structure. Hardware utilization of R2MDC is low compared to R2SDF. Simulation is performed to analyze the results through ModelSim6.3c. Synthesis process is carried out by Xilinx10.1.