Patent ID: 8861649

Claim:
A method for reducing power consumption in wireless communications during Fast Fourier Transform processing by a transform module in a device, comprising: receiving input data by a physical layer (PHY) pipeline from an antenna, the PHY pipeline comprising a lookup and compare module; determining, by the lookup and compare module, prior to Fast Fourier Transform or Inverse Fast Fourier Transform processing the input data, whether result data corresponding to the Fast Fourier Transform or Inverse Fast Fourier Transform processing the input data has been previously stored in memory; in response to determining that the result data has been previously stored in the memory, the lookup and compare module is configured to retrieve the result data from the memory; in response to determining that the result data has not been previously stored in the memory, the transform module is configured to: modify the input data and perform the Fast Fourier Transform or Inverse Fast Fourier Transform on the modified input data to generate the result data, and provide the result data, wherein a reduction of power consumption is facilitated; store the result data in the memory for use in further Fast Fourier Transform or Inverse Fast Fourier Transform processing in response to the result data having not been previously stored in the memory; and update a lookup table in response to storing the result data in memory.