Adaptive downlink multi user multiple input multiple output (MU-MIMO)precoding using uplink signal subspace tracking for active antenna systems AAS
US11451274B2 · kind B2 · utility
25Cited by
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22Claims
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Key dates
| Filing date | Jun 29, 2018 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Sep 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B15/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method, base station and user equipment are disclosed. A base station configured to communicate with a plurality of user equipments is provided. The base station includes processing circuitry configured to: track a downlink signal subspace for each UE of the plurality of UEs, and determine a Multi-User Multiple-Input Multiple-Output, MU-MIMO, precoders based on the downlink signal subspace for each UE of the plurality of UEs. The MU-MIMO precoders are configured to at least in part suppress intra-cell MU-MIMO interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.