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A new systolic array algorithm for discrete Fourier transform

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2 Author(s)
Chi-Min Liu ; Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Chein-Wei Jen,

A new systolic algorithm for computing the discrete Fourier transform (DFT) is presented. The algorithm exhibits the minimum required time O(Nta) and the computational complexity O(2N2), which are much better than the time O(Nta+Ntm) and the complexity O(4N2) in existing systolic algorithms, where ta and tm are the computation time for a complex addition and a complex multiplication, respectively, and N is the DFT length. By exerting the benefits of the algorithm and adopting the scheme of tag control, a systolic array and a two-level pipelined systolic array are designed. The resulting arrays have outstanding performance on computing speeds, hardware cost, and the number of input/output (I/O) channels

Published in:

Circuits and Systems, 1991., IEEE International Sympoisum on

Date of Conference:

11-14 Jun 1991