== APP RX FFT == __Figure 1 - APP RX FFT Overview__ [[BR]][[BR]] [[Image(app_rx_fft.jpg, 800px)]] [[BR]][[BR]] Architecture summary : * '''Data Load''' - Fetch I/Q data from sync fifo, forward to FFT Core [[BR]] * '''FFT''' - Compute Fast Fourier Transform [[BR]] * FFT Core - Programmable number of FFT points e.g. N = 8, 16, 32, 64, 128, 256, 512 or 1024-pt * FFT Control - Initiate start of FFT processing, can be used to throttle the FFT packet rate * '''Average/Power''' - Compute Power average using incoming FFT I/Q data[[BR]] * AVG Processor - Compute power using previous data (stored in AVG RAM) and current data from FFT Core * AVG Prefetch - Fetch previous computed average data and forward to AVG Processor. At the end of average processing, forward payload to Packet Processor for IP/UDP wrapping. * AVG Control - Initiate start and number of times the Averaging/Power calculation is invoked, N,,avg,, = 2, 4, 6, 8, 16, 32, 64, 128, 256. [..]