Low-complexity beamforming for a multi-line communication system
US10992341B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2019 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Jun 17, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0007
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-line digital transceiver configured to use low-complexity beamforming on at least some tones to boost effective SNR values for selected subscriber lines. In an example embodiment, the beamforming coefficients can be restricted to one-bit values or two-bit values, e.g., such that the corresponding beamforming computations can be implemented using only sign changes, swaps of the real and imaginary parts, and/or zeroing of some values, and without invoking any full-precision hardware multiplication operations. At least some embodiments can be run on a significantly simpler and/or less powerful vectoring engine than conventional beamforming solutions while still being able to provide nearly optimal beamforming SNR gains. In some embodiments, additional scaling by powers of two may be applied to at least some signals contributing to the beamforming, e.g., to satisfy power constraints for some or all of the subscriber lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.