Method for transmission by a base station equipped with a multi-element antenna to a mobile
US6021334A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1997 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Nov 6, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0615
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
According to this method for transmitting a digital signal by a base station equipped with a multi-element antenna to a mobile, in the presence of interference sources and background noise, at least one frequency transposition operator is calculated which approximately transforms one reception calibration table into one transmission or reception calibration table; statistical data are calculated on the basis of the signals received by the various elements, originating from the mobile and the interference sources; for this mobile, an optimum set of spatial weightings is calculated on the basis of the statistical data, the frequency transposition operator, and a criterion for reinforcing the useful signal and reducing the interference sources; the digital signal is weighted on the basis of the optimum set of weightings, then it is transmitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.