Weak signal detection in wireless communication systems
US8335283B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 11, 2008 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Apr 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2688
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mechanism for weak signal packet detection in a wireless receiver. Cross-correlation and self-correlation operations are performed on a plurality of short training field symbols associated with a plurality of RF signals received at a plurality of receiver chains of the wireless receiver. A plurality of self-correlation outputs generated in the plurality of receiver chains are summed and the sum of the self-correlation outputs is accumulated over a predetermined number of STF symbol periods. A moving sum operation is performed on the accumulation output when the accumulation output is greater than a first predetermined threshold. A signal indicating a data packet has been detected is generated when the moving sum output is greater than a second predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.