Title :
Design of efficient radix-8 butterfly PEs for VLSI
Author :
Widhe, T. ; Melander, J. ; Wanhammar, L.
Author_Institution :
Dept. of Electr. Eng., Linkoping Univ., Sweden
Abstract :
In this paper we discuss various aspects of VLSI implementation of radix-8 Sande-Tukey butterfly PEs. The Sande-Tukey algorithm is investigated to find regularities and simplifications. We argue that a bit-serial implementation of the butterfly PEs will be advantageous from an area point of view under most circumstances. The ideas are supported by a design example, a radix-8 butterfly PE that will be used in a 512 point FFT/IFFT processor aimed at OFDM applications
Keywords :
CMOS digital integrated circuits; VLSI; digital signal processing chips; fast Fourier transforms; pipeline processing; DSP chip; FFT/IFFT processor; OFDM applications; Sande-Tukey algorithm; Sande-Tukey butterfly PEs; VLSI implementation; bit-serial implementation; radix-8 butterfly processing elements; Batteries; Digital signal processing; Fast Fourier transforms; Hardware; Memory architecture; OFDM; Signal design; Signal processing algorithms; Throughput; Very large scale integration;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.621567
