Precoding loss reduction
US9020021B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2013 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Jul 29, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03808
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus for encoding data signals includes a transmitter configured to encode and transmit a data signal over a communication channel, the transmitter including a precoder; a signal shaper configured to adjust the data signal by applying an equalization setting to the data signal, the equalization setting including an amplitude and offset and transmit the adjusted data signal to the precoder; and a processing unit. The processing unit is configured to perform: receiving channel coefficients associated with the communication channel; for each of a plurality of amplitude settings and a plurality of offset settings, calculating whether a modulo amplitude level would occur at a receiver using a modulo operation; selecting the equalization setting from the plurality of amplitude settings and the plurality of offset settings based on the calculation; and transmitting a control signal specifying the equalization setting to the signal shaper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.