Research Article
Algorithm and Architecture Optimization for 2D Discrete Fourier Transforms with Simultaneous Edge Artifact Removal
Table 2
Comparison of OPSD1 2D FFT with regular RCD-based implementation.
| Platform | SEAR2 | Precision | RT3 (ms) | | Yes/No | bits | 512 × 512 | 1024 × 1024 |
| Kintex 7, 28nm (ours) | Yes | 16 (fixed) | 1.5 | 4.8 | Kintex 7, 28nm (ours) | No | 16 (fixed) | 0.9 | 4.1 | Kintex 7, 28mm [8] | Yes | 16 (fixed) | 32.4 | 116.7 | Stratix IV [5] | No | 64 (double) | - | 6.1 | Virtex-5-BEE3, 65nm[14] | No | 32 (single) | 24.9 | 102.6 | Virtex-E, 180nm [21] | No | 16 (fixed) | 28.6 | 76.9 | ASIC, 180nm | No | 32 (single) | 21.0 | - |
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Optimized periodic + smooth decomposition (OPSD) Simultaneous edge artifact removal Runtime (ms). |