Real Time Analog Front End Response Estimation for Sensing Applications
AssigneeApple Inc.
InventorsYuval Avner, Michael Kerner, Ran Forte
Life of this patent
Estimating the term…
Abstract
Embodiments are presented herein of apparatuses, systems, and methods for a wireless device to perform improved channel estimates for sensing applications such as ranging. The wireless device may determine noise characteristics, e.g., a spectrum of the variance of noise on a channel and may use the noise characteristics to estimate a response of an analog front end of the wireless device. The wireless device may correct a channel estimate based on the estimated response of the analog front end.
Claims20
An apparatus for managing a wireless device, the apparatus comprising:
- a processor configured to cause the first wireless device to:
- receive a signal over a channel;
- estimate noise characteristics on the channel;
- estimate, based on the noise characteristics, an analog front end (AFE) response;
- and
- estimate, based on the AFE response and the signal, a channel estimate net of the AFE response.
A method for performing channel estimation, the method comprising:
- at a first wireless device:
- receiving a signal from a second wireless device;
- determining a first channel estimate based on the signal;
- determining a noise characteristic;
- and
- determining, based on the noise characteristic and the first channel estimate, a corrected channel estimate.
A first wireless device, comprising:
- an analog front end (AFE);
- and
- a processor coupled to the AFE and configured to cause the first wireless device to:
- receive, from a second wireless device, a signal;
- estimate, based on the signal, a channel including the AFE;
- estimate a gain response of the AFE by estimating a noise characteristic;
- determine, based on the channel including the AFE and the gain response of the AFE, a channel estimate corrected for the gain response of the AFE.
Dependencies are inferred from the claim text.