Patent ID: 9313072
Filing Date: 2016-04-12
CPC Classification: G01P,H04B,H04L,H04W

Claim Text:
1. An integrated circuit apparatus to determine an N-point Fast Fourier Transform (FFT) of a time-varying signal so as to sense one or more frequency components of the time-varying signal, the apparatus comprising: an input/output interface to receive a first sub-sampled set of samples of the time-varying signal sampled at a first sampling rate below a Nyquist rate of the time-varying signal and a second sub-sampled set of samples of the time-varying signal sampled at a second sampling rate below the Nyquist rate of the time-varying signal, wherein the second sampling rate is different from the first sampling rate; and at least one processor communicatively coupled to the input/output interface to: wherein: each of the first FFT and the second FFT is a low-radix FFT; the time-varying signal has a frequency bandwidth of interest BW and a Nyquist sampling criteria of N samples in a sampling time T, wherein N=T×BW; the first sampling rate is BW/p the second sampling rate is BW/p p