Maximum likelihood detector and/or decoder
US7263652B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2004 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Sep 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/4107
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A maximum likelihood detector receiving a data stream corresponding to ideal values which may include noise, and outputting information specifying a sequence of states of maximum likelihood selected from possible states corresponding to the data stream according to weighting value selections made by the processors, the ideal values being determined by the possible states, including: a pre-processor to obtain first weighting values; processors in a hierarchy, each processor in a select level of the hierarchy is programmed to use, respectively, a plurality of the weighting values to calculate subsequent weighting values indicating respective likelihoods that a section of the data stream values corresponds to each of a plurality of possible state sequences, for each possible initial state and each possible final state, to select further weighting value of highest likelihood corresponding to a state sequence from the initial state to the final state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.