Title :
Design and implementation of an all-analog fast-fourier transform processor
Author :
Boyle, Keith ; Mercier, Pat ; Sadeghi, Nima ; Gaudet, Vincent ; Schlegel, Christian ; Winstead, Chris ; Kashyap, Manohar
Author_Institution :
Univ. of Alberta, Edmonton
Abstract :
The implementation of a 64-symbol analog, current-mode FFT processor is discussed. An analog FFT would be suitable for combination with an analog decoder in the making of an all-analog communication front-end for OFDM systems. Here the FFT is implemented using a butterfly diagram as the system block diagram; each node in the diagram is implemented using analog circuits. Implementation details, including consideration of the effect of approximation errors and the implementation of a test chip, are discussed.
Keywords :
OFDM modulation; analogue circuits; fast Fourier transforms; network synthesis; OFDM; all-analog communication front-end; all-analog fast-Fourier transform processor; analog FFT; analog decoder; butterfly diagram; system block diagram; test chip; Analog circuits; Data flow computing; Fast Fourier transforms; Feeds; Flow graphs; Iterative decoding; Mirrors; OFDM; Testing; Wires;
Conference_Titel :
Circuits and Systems, 2007. MWSCAS 2007. 50th Midwest Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
978-1-4244-1175-7
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2007.4488832
