Enhanced equalization based on a combination of reduced complexity MLSE and linear equalizer for heavily ISI-induced signals
US9825785B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2015 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Mar 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03292
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for digitally equalizing a data channel with heavily ISI-induced signals received after passing a data communication channel using a combination of a linear equalizer and a nonlinear equalizer, which comprises an ADC, for sampling a received signal and converting it to a digital form; a Linear Equalizer for pre-processing said received signal, said Linear Equalizer is adapted to pre-process a first group consisting of echoes/channel taps of the induced ISI, which are not equalized by said nonlinear equalizer, by eliminating the echoes/channel taps of said first group; pre-process a second group consisting of the combination of the entire echoes/channel taps of the induced ISI, by eliminating the echoes/channel taps of said second group; and a nonlinear equalizer for receiving the signals preprocessed by said Linear Equalizer and for further processing said preprocessed signals and eliminating the echoes/channel taps of the induced ISI to be equalized by said nonlinear equalizer, thereby compensating for the entire ISI induced by said channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.