AWRL1432: Question on FFT computation time on HWA

Chris Meng

Part Number: AWRL1432

Hi,

I found below info in TRM.

What does "Numberof Back-to-Back Iterations" mean? Does it mean the loop of n-point FFT process?

If the FFT size is 32 and the loop is 1, the process time is 8+8 cycles (80Mhz HWA), right?

Thanks,

Chris

0 James Murdock65 7 months ago

Hello Chris, the bakc-to-back refers to back-to-back iterations of the FFT (i.e. successive FFTs performed in a row) e.g. for multiple RX chains.

For FFT size 32 I believe the math should be 32 + 32 = 64 cycles.

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