Methods and apparatus in antenna diversity systems for estimation of direction of arrival
US6650910B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1998 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Apr 30, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0894
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to radio systems and, more particularly, to a method and apparatus for receiving radio signals with the aid of beams generated by antenna assemblies. For each of the beams in a first of the antenna assemblies there is a beam in the second of the antenna assemblies that covers the same space area. Signals received by the second are delayed relative to signals received by the first of the antenna assemblies. Then signals from the first antenna assembly are combined with signals from the second of the antenna assemblies. The combined signals derive from beams covering the same space area. Each combined signal is then radio received in a joint radio receiver. A DOA-estimation can be calculated on the basis of radio received signals derived from all beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.