Apparatus and method for determining beamforming vector in a codebook-based beamforming system
US7907913B2 · kind B2 · utility
13Cited by
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14Claims
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Key dates
| Filing date | Feb 5, 2007 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Jan 14, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2601
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for determining a beamforming vector in a codebook-based transmission beamforming system are provided. In a feedback method for a receiver in a codebook-based transmission beamforming system, forthcoming channel values for a forthcoming period are generated using M present and previous channel estimates. Effective channel gains for all transmission beamforming vectors included in a codebook are calculated using the forthcoming channel values. A codebook index corresponding to the maximum effective channel gains is fed back to a transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.