  In this paper, an optimized efficient VLSI architecture of a pipeline Fast
Fourier transform (FFT) processor capable of producing the reverse output order
sequence is presented. Paper presents Radix-2 multipath delay architecture for
FFT calculation. The implementation of FFT in hardware is very critical because
for calculation of FFT number of butterfly operations i.e. number of
multipliers requires due to which hardware gets increased means indirectly cost
of hardware is automatically gets increased. Also multiplier operations are
slow that's why it limits the speed of operation of architecture. The optimized
VLSI implementation of FFT algorithm is presented in this paper. Here
architecture is pipelined to optimize it and to increase the speed of
operation. Also to increase the speed of operation 2 levels parallel processing
is used.
