Methods and systems for decoding symbols by combining matched-filtered samples with hard symbol decisions
US6625236B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2000 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Feb 8, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03337
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Multibit symbols from a signal that is received on a communications channel are decoded by combining a matched filtered signal that is derived from input signal samples, and hard decisions that are derived from the input signal samples, in order to obtain soft symbol values. MLSE-PSP processing may be performed on prefiltered input signal samples to obtain the hard decisions. The original, unprefiltered input signal samples also may be match filtered to determine improved soft information, to thereby allow the symbol decisions to be refined over and the above the result provided by MLSE-PSP. The soft symbol values then may be processed to obtain soft bit values for each bit of the multibit symbols. In particular, the soft symbol values may be converted to soft bit values and interleaved to provide soft, coded bit values. Error correction decoding then may be applied to the soft, coded bit values to provided the decoded bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.