Eigenvalue-based passive intermodulation detection
US11742889B2 · kind B2 · utility
1Cited by
24References
22Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 9, 2019 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Sep 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0456
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and network node for detection of passive intermodulation (PIM) are disclosed. According to one aspect, a method includes determining values of a covariance matrix based at least in part on uplink signals received by the network node radio. The method also includes determining a plurality of uplink (UL) channel 5 eigenvalues based at least in part on an eigen-component acquisition technique. The method further includes determining a presence or absence of PIM based at least in part on a plurality of the UL channel eigenvalues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.