Preamble detection with multiple receive antennas
US7876858B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2007 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Aug 2, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2675
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system comprises a correlation module that receives modulated signals from R antennas, that correlates each of the modulated signals with Y preamble sequences, and that generates Y correlation values for each of the R antennas, where R and Y are integers greater than or equal to 1. A control module generates correlation sums by adding each of the Y correlation values for one of the R antennas to corresponding ones of the Y correlation values for others of the R antennas, that selects a largest correlation sum from the correlation sums, and that detects one of the preamble sequences in the modulated signals when a magnitude of the largest correlation sum is greater than or equal to a first predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.