Revista: IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, VOL. 21, NO. 1, JANUARY 2013

Autores: Mario Garrido. Jesús Grajal. M.A. Sánchez. Oscar Gustafsson.

The appearance of radix- was a milestone in the design of pipelined FFT hardware architectures. Later, radix- was
extended to radix- . However, radix- was only proposed for single-path delay feedback (SDF) architectures, but not for feedforward ones, also called multi-path delay commutator (MDC). This paper presents the radix- feedforward (MDC) FFT architectures. In feedforward architectures radix- canbe used for any number of parallel samples which is a power of two.