Bi-directional training in dual networks system
US8892140B2 · kind B2 · utility
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5References
32Claims
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Key dates
| Filing date | Sep 4, 2012 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jun 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for bi-direction training in D2D/cellular networks. An embodiment method includes sending training symbols to sense interference from the cellular UEs, calculating an interference subspace from the cellular UE to each of the D2D UEs, calculating an orthogonal projection matrix based on the interference subspace calculated, and iteratively updating receive filters through forward training and transmit beamformers through backward training after the orthogonal projection matrix is calculated to align the D2D UEs. In an embodiment, training symbols are sent to sense interference from the cellular UE.
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