Per-tone TX antenna selection beamforming
US9112563B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 2014 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | May 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/022
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for per-tone transmit (TX) antenna selection beamforming includes obtaining an estimate of a per-tone channel amplitude information corresponding to each antenna of multiple antennas of a transmitter. A spatial mapping matrix of the transmitter is determined using the obtained estimate of the per-tone channel amplitude information corresponding to the antennas. Each tone includes an orthogonal frequency-division multiplexing (OFDM) sub-carrier, and the per-tone channel amplitude information corresponding to each antenna is associated with a propagation channel between that antenna and a receive (RX) antenna of a receiver. The spatial mapping matrix is determined to allow transmission of data corresponding to each tone through one of the antennas, and to allow each of the antennas to be active during a transmission time of the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.