A Radix-4 FFT Using Complex RNS Arithmetic
Fred J. Taylor, Giorgos M. Papadourakis, Alexander Skavantzos, A. Stouraitis · IEEE Transactions on Computers · 1985
Recent advancements in residue arithmetic have given rise to a complex number system variant which better than halves RNS multiplication complexity. This advantage is applied to the problem of implementing a high-speed radix-4 RNS FFT. It is shown that a significant improvement in both complexity and speed can be achieved.