Adaptive gain control for indoor positioning
US11346918B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2019 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Oct 6, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G2201/307
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An interrogation device, for locating a wireless device, includes a receiver and digital processing circuitry. The receiver includes one or more receiver stages having adjustable gains, and is configured to receive from the wireless device a signal that carries a packet including a direction-finding field, wherein, during reception of the direction-finding field, multiple different temporal sections of the received signal traverse different wireless channels due to switching among different antennas in the interrogation device or in the wireless device and thus have multiple different received-signal levels. The digital processing circuitry is configured, based on the multiple received temporal sections of the signal during reception of the direction-finding field, to (i) adapt the adjustable gains of the receiver stages and (ii) estimate a position of the wireless device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.