Data processing apparatus and method for saving memory space
A data processing device and storage space technology, applied in the computer field, can solve the problems of frequent data read and write operations, increased FFT calculation time, large storage space, etc.
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[0032] In order to save the storage space occupied by the FFT operation and improve the processing efficiency of the FFT operation, in the embodiment of the present invention, in the process of performing the FFT operation on the input data, the index value of each data that needs to be reordered is obtained, and it is performed Code position inversion operation to obtain the corresponding new index value; compare the index value of each data with the corresponding new index value, and only when it is determined that the comparison result meets the preset condition, the index value and the corresponding new index value are stored The corresponding data in the modules are exchanged, and if it is determined that the comparison result does not meet the preset condition, the corresponding data of the index value in the storage module remains unchanged.
[0033] In this embodiment, when the FFT operation is performed on N numbers, the input data is represented as x(i), and the index...
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