Opportunistic downlink interference alignment
US9531467B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2014 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Dec 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0632
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication system configured to send data using an interference alignment scheme is disclosed herein. The disclosed communication system includes an MS and a BS. The disclosed BS sends data using a transmission beamforming matrix that minimizes intra-cell interference. The disclosed MS receives the data using a reception beamforming matrix that minimizes inter-cell interference. The BS sends information about a reference beamforming matrix to the MS, and sends a pilot signal to the MS using the reference beamforming matrix. The MS estimates an effective channel using the reference beamforming matrix, and calculates the intensity of an interference signal from an interference BS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.