Non-linear precoder with separate tracking
US9887736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2015 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Mar 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4975
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network unit includes a non-linear precoder for jointly pre-processing transmit samples to be transmitted over respective communication channels for crosstalk mitigation. The non-linear precoder includes a first non-linear precoding stage configured to operate according to a first triangular precoding matrix and including a modulo function, followed by a second linear precoding stage configured to operate according to a second precoding matrix. The network unit further includes a first pilot signal generator configured to generate first pilot signals for pre-processing by the second precoding stage only to yield partially-precoded pilot signals for further transmission over the respective communication channels, and a controller configured to update the second precoding matrix based on first error measurements performed during the transmission of the partially-precoded pilot signals over the respective communication channels while keeping the first precoding matrix unaltered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.