Automatic gain control and low power start-of-packet detection for a wireless LAN receiver
US7151759B1 · kind B1 · utility
46Cited by
13References
87Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2002 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Mar 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3078
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dynamic range. The AGC system includes estimating the power in a received signal by averaging the log of the signal power. The Start of Packet detection avoids using the radio receiver's main analog to digital converters to preserve power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.