Compensation factor reduction in an unrolled decision feedback equalizer
US8724688B1 · kind B1 · utility
5Cited by
11References
25Claims
0Family size
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Key dates
| Filing date | Jan 10, 2012 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Jul 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03108
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An unrolled decision feedback equalizer (DFE) as disclosed herein has a reduced number of compensation factors while keeping a suitable performance level for a given application. The KN possible DFE correction levels are reduced or compressed into fewer levels (R), merging together the levels that are the closest together where K represents the number of possible symbols in each baud, or the number of bits encoded into each baud, and N represents the DFE depth in number of bauds. A mapping function is then provided to convert the KN combinations of previous history bits into R sampler selections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.