Compressed beamforming feedback
US10601486B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2019 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Jan 29, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0634
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for providing a compressed beamforming feedback of a communication channel includes receiving, at a first communication device, a plurality of training signals from a second communication device via the communication channel, determining a channel matrix corresponding to the communication channel based on the plurality of training signals, precomputing a sequence of column sorting orders and/or a sequence of scaling factors based on a first intermediate matrix derived from the channel matrix in advance of performing a modified QR decomposition, performing the modified QR decomposition to derive the compressed beamforming feedback based on the first intermediate matrix with the precomputed column sorting orders and/or scaling factors as an input, and transmitting the compressed beamforming feedback from the first communication device to the second communication device to enable the second communication device to steer at least one subsequent transmission to the first communication device based on the compressed beamforming feedback.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.