Review Reports

Round 1

Reviewer 1 Report

This is a very good paper that proposes a memory-based real-valued FFT architecture based on constant geometry.

The manuscript is well written and  organized, and the theory seems correct. The comparisons with other prior works are interesting.

Overall it is a solid work with interesting performance in terms of circuit resources and frequency efficiency.

Please correct some minor typos e.g. at row 185 "deigned", and so on.

Reviewer 2 Report

The authors present a modified constant-geometry based signal flow graph for memory-based real-valued fast Fourier transform architecture. The proposed method  exibits low memory requirements and  low computaional complexity.  In addition it  meets the constraint of in-place operation, concurrent I/O, normal-order I/O, variable size, and parallel processing. The presented experimental results confirm the  efficiency of the proposed address scheme.

The paper is mostly well written.