Method and apparatus for receiver pulse response determination
US8503575B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2009 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Dec 9, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/063
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A pulse response for a receiver, as an array PR, is found from the receiver's symbol stream. For a continuous stream of arbitrary data, a value of the array PR[k] can be determined from the signal levels of the symbols received. The stream of received data is input to a FIFO. Between the first and last locations of the FIFO is the symbol referred to herein as Dn. Symbols located in the FIFO before Dn are referred to as Dn−x. Symbols located in the FIFO after Dn are referred to as Dn+x. Dn differs from the other FIFO symbols in that its signal level can be measured with an adjustable error slicer. The ISI effect of any Dn−k upon Dn can be measured, and thus any PR[k] measured, by measuring the average signal level of Dn when only certain types of data streams occur in the FIFO.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.