Beamforming weight generation using adaptive trigonometric waveform interpolation techniques
US8406720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2009 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Oct 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0626
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Techniques are provided herein to generate beamforming weight vectors for transmissions to be made from a first wireless communication device, e.g., a base station, to a second wireless communication device, e.g., a client device. The first device has a plurality of antennas and receives uplink transmissions from the second device, each uplink transmission comprising a group of frequency subcarriers. The first device computes channel information from the received uplink transmission and computes one or more trigonometric waveforms determined to approximate the channel information. One or more downlink beamforming weight vectors are computed at any given frequency subcarrier (thus in any frequency subband) by interpolation using the one or more trigonometric waveforms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.