Patent · US Expired

Adjustment for equalization parameters in receivers

US7184475B2 · kind B2 · utility

7Cited by

9References

4Claims

0Family size

Assignee

LUCENT TECHNOLOGIES INC. · US

Inventors

Ralf Dohmen · Nuremberg, DE
Christoph Schulien · Altdorf bei Nürnberg, DE
Herbert Haunstein · Dormitz, DE
Achim Herzberger · Nuremberg, DE
Georg Roell · Postbauer-Heng, DE
Konrad Sticht · Eschenbach, DE

Key dates

Filing date	Jan 22, 2002
Grant date	Feb 27, 2007
Priority date	—
Expiry date	Nov 14, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2025/03617
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method of adjusting equalization parameters in a receiver wherein a bit error rate (BER) in a data stream is measured from the number of corrected bits in data blocks which have an information section and an error correction section. A predetermined equalization parameter is changed, and the bit error rate (BER) after change is again measured to find out how to change the predetermined equalization parameter until an optimum is reached.When adjusting the threshold value of the receiver, the history of occurring bits preceding the actual sampled bit is taken into consideration in that the amount and direction of adjustment is derived from a look-up table.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.