COBRA: a 100-MOPS single-chip programmable and expandable FFT |
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| Authors: | Chen T. Sunada G. Jian Jin |
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| Affiliation: | Dept. of Electr. Eng., Colorado State Univ., Fort Collins, CO; |
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| Abstract: | This paper presents an optimized column fast Fourier transform (FFT) architecture, which utilizes bit-serial arithmetic and dynamic reconfiguration to achieve a complete overlap between computation and communication. As a result, for a clock rate of 40 MHz, the system can compute a 24-b precision 1K point complex FFT transform in 9.2 μs, far surpassing the performance of any existing FFT systems |
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