Method for separating interfering signals and computing arrival angles
US7539273B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 2003 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Aug 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method is disclosed for processing all types of received, interfering radio frequency signals corrupted by noise to extract the individual signals without having any a priori knowledge about them. Received signals are converted for eigenspace processing and are subjected to repeated non-linear time domain and fast Fourier transform frequency domain processing that calculates eigenstream beam forming weights U. By performing calculations in eigenspace, the number of independent weights U that must be calculated is generally reduced, minimizing calculating time. Once the weights U have been calculated in eigenspace they are transformed into antenna beam forming weights W that are used to extract the individual signals and to determine the angle of arrival of each of the individual signals. Further time is saved because the weights W do not have to be updated for every time slice of the received signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.