×

OFDM speed estimation

  • US 9,100,278 B2
  • Filed: 03/01/2013
  • Issued: 08/04/2015
  • Est. Priority Date: 08/17/2012
  • Status: Active Grant
First Claim
Patent Images

1. A method for estimating speed using an orthogonal frequency division multiplexing (OFDM) receiver, the method comprising:

  • receiving a radio frequency (RF) signal at the OFDM receiver, the OFDM receiver having a fast Fourier transform (FFT) stage;

    storing a first output of the FFT stage in a memory, the first output corresponding to the RF signal at a first time;

    convolving the first output with a second output of the FFT stage, the second output corresponding to the RF signal at a second time;

    determining one or more observables of the convolution; and

    estimating a speed based on the one or more observables.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×