Optimization of the decision threshold for binary signals
US7320095B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2002 |
| Grant date | Jan 15, 2008 |
| Priority date | — |
| Expiry date | Nov 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A threshold value is set in a decision circuit receiving a transmitted stream of binary symbols from a network link. The decision circuit uses the threshold value for detecting whether a 1 or a 0 is received to produce an output stream having a low bit error rate. Bit errors in the output stream of the detector are detected. The number of errors is counted when a transmitted 0 is detected as a 1 in the output stream. The number of errors is also counted when a transmitted 1 is detected as a 0 in the output stream. The counted numbers of errors are compared to each other. The threshold value is modified, if necessary, based on the result of the comparing, to e.g. make the probabilities of the two kinds of errors equal to each other. Extra predetermined bits can be inserted and used in determining bit errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.