发明名称 |
STORAGE-FREE METHOD AND ARCHITECTURE FOR COMPUTING FFT ROTATIONS |
摘要 |
<p>A storage-free method and architecture for computing FFT rotations makes it possible to compute the FFT decomposed according to the Cooley-Tukey algorithm without using stored data. The rotation angles of the FFT steps are generated by a single counter (1) and a circuit comprising adders and logic gates, eliminating the need to store data related to rotation angles. Rotations are computed using a modified CORDIC algorithm which makes it possible to simplify the micro-rotation computing blocks. Moreover, a system is disclosed which uses only two subtracters to compensate for the typical scaling of the CORDIC algorithm.</p> |
申请公布号 |
WO2008125708(A1) |
申请公布日期 |
2008.10.23 |
申请号 |
WO2008ES00220 |
申请日期 |
2008.04.10 |
申请人 |
UNIVERSIDAD POLITECNICA DE MADRID;GARRIDO GALVEZ, MARIO;GRAJAL DE LA FUENTE, JESUS |
发明人 |
GARRIDO GALVEZ, MARIO;GRAJAL DE LA FUENTE, JESUS |
分类号 |
G06F17/14 |
主分类号 |
G06F17/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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