发明名称 |
Methods and apparatus for providing an efficient FFT memory addressing and storage scheme |
摘要 |
FFT butterfly data sets may be stored in memory in a predetermined order. Such an order may allow a butterfly data set to be read from a single memory address location. The memory addressed may be computed by an address rotary function depending on the butterfly and stage of the FFT. Addressing the memory in such a manner may allow each butterfly data set of a subsequent FFT stage to be stored to a single memory location. Shuffle registers may delay the writing of FFT butterfly results to the memory until most of the data corresponding to a particular butterfly operation has been computed. The shuffle registers may rearrange and combine the results of one or more butterfly operations in a different manner from which they have been computed. Combining the results in this manner may allow a subsequent FFT stage to access data by addressing a single memory location.
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申请公布号 |
US7996453(B1) |
申请公布日期 |
2011.08.09 |
申请号 |
US20070835214 |
申请日期 |
2007.08.07 |
申请人 |
MARVELL INTERNATIONAL LTD. |
发明人 |
LEUNG PAK HEI MATTHEW |
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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