Array antenna system of wireless base station
US6064338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Aug 27, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/2605
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An array antenna system of a wireless base station in CDMA mobile communications combines signals, which have been received by a plurality of antenna elements of an array antenna, upon subjecting the signals to amplitude and phase-rotation control, and despreads the combined signal. A searcher has matched filters which apply correlation operations to output signals from respective antenna elements to thereby calculate correlation signals that are correlated with a signal transmitted from a mobile station of interest. An adaptive weight calculating unit calculates adaptive weights for obtaining in-phase correlation signals from the respective antenna outputs. A beam former multiplies, by the adaptive weights, output signals from the corresponding antenna elements and combines the resulting products to output a combined signal. The combined signal is found for each path of multipaths and is input to a Rake receiver, which proceeds to identify data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.