Method and device for the detection of sources in a communications system
US7019635B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Oct 16, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for the detection of M0 sources common to several observations u(t) and v(t) within a single array of sensors, the observations having different lengths N1 and N2, comprises at least the following steps: defining a law of likelihood Vuv([M=M0]/M0) substantially equal to the chi-2 law with 2(N1−M0)(N2−M0) degrees of freedom with N1≦N2, dim{u(t)}=N1×1 and dim{v(t)}=N2×1; determining a detection threshold αM in order to obtain a low probability of false alarms and a number of degrees of freedom that takes account of the lengths N1 and N2 and of the number of sources M0; determining the presence and/or the number of the sources M0 in applying the law of likelihood and the threshold αM. The method and device can be applied to the determining of the presence and/or the number of sources common to at least two observations having different lengths in a GSM type radiocommunications system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.