Downlink transmit beamforming
US7719993B2 · kind B2 · utility
67Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2004 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Mar 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0643
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless network access point can operate as a closed loop MIMO device when communicating with a station that is operating as an open loop MIMO device. Transmit/receive chains in the access point are calibrated to support aggregate channel reciprocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.