DocumentCode
1800473
Title
FPGA-based radix-4 butterflies for HIPERLAN/2
Author
Pérez-Pascual, A. ; Sansaloni, T. ; Valls, J.
Author_Institution
Dpto Ingenieria Electronica, Univ. Politecnica de Valencia, Spain
Volume
3
fYear
2002
fDate
2002
Abstract
This paper presents two different FPGA-implementation of radix-4 butterflies suitable for HIPERLAN 2. The two approaches lead to an efficient use of the hardware resources available in the target device and reduces the area with respect to the direct implementation of the radix-4 butterfly. Both methods reduce the area required storing the coefficients. The first one uses the symmetries of coefficients for reducing the number of functions to store; the second one takes advantage of the dual-port capability of the embedded block-RAM.
Keywords
distributed arithmetic; fast Fourier transforms; field programmable gate arrays; radio access networks; wireless LAN; 64 points FFT; FPGA implementation; HIPERLAN 2; broadband radio access LAN; coefficients storage area reduction; dual-port capability; embedded block-RAM; local area network; radix-4 butterflies; symmetries of coefficients; Arithmetic; Digital modulation; Equations; Field programmable gate arrays; Frequency conversion; Frequency modulation; Hardware; Local area networks; OFDM modulation; Topology;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN
0-7803-7448-7
Type
conf
DOI
10.1109/ISCAS.2002.1010214
Filename
1010214
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