Beamforming apparatus and method for multi-antenna system
US7965234B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2010 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Aug 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/2605
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A beamforming apparatus for a multi-antenna system includes a phase control unit including a plurality of phase shifters which respectively control the phases of signals according to a preset phase weight vector; a signal combination unit combining the signals outputted from the plurality of phase shifters; a frequency down converter down-converting the combined signal outputted from the signal combination unit into a baseband signal; an analog/digital (A/D) converter converting the baseband signal into a digital signal; and a radio frequency (RF) beamforming control unit providing a plurality of preset phase weight vectors to the phase control unit according to a preset application sequence, deciding a maximum signal-to-noise ratio (SNR) among a plurality of SNRs corresponding to the applied phase weight vectors by using the digital signal outputted from the A/D converter, and controlling the beamforming of the phase control unit by using the maximum SNR.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.