System and methods to compensate for Doppler effects in multi-user (MU) multiple antenna systems (MAS)
US9312929B2 · kind B2 · utility
229Cited by
93References
45Claims
0Family size
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Key dates
| Filing date | May 4, 2012 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | May 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and methods are described which compensate for the adverse effect of Doppler on the performance of DIDO systems. One embodiment of such a system employs different selection algorithms to adaptively adjust the active BTSs to different UEs based by tracking the changing channel conditions. Another embodiment utilizes channel prediction to estimate the future CSI or DIDO precoding weights, thereby eliminating errors due to outdated CSI.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.