Seamless match point switching in MLSE-based modems
US9948435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2016 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Jul 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03273
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Method and system for providing seamless match point switching in an adaptive decoder (e.g., an MLSE decoder) that is based on estimation of symbol sequences, according to which statistics regarding samples corresponding to different symbol sequences in alternative match points are collected by a statistics collector, to create a set of figures of merit representing the quality of each alternative match point, while different match points are obtained by changing the delay of symbols decoded by the adaptive decoder and samples entering the statistics collector. A figure of merit of the current match point is compared to the figure of merit of alternative match points. Whenever an alternative match point figure of merit is better than the current match point by a predefined threshold, a decision to switch to the alternative match point is made. Seamless switching to the alternative match point is performed by shifting the sampling phase forward or backward, until obtaining better performance, while performing adaptation of the decoder to the sampling phase shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.