Patent · US Expired

Early-late correlation for timing error correction in data communication receivers

US7190709B2 · kind B2 · utility

4Cited by

4References

52Claims

0Family size

Assignee

Advanced Micro Devices, Inc. · US

Inventors

Uwe Eckhardt · Dresden, DE
Jörg Borowski · Dresden, DE
Tilo Ferchland · Dresden, DE

Key dates

Filing date	Jun 19, 2003
Grant date	Mar 13, 2007
Priority date	—
Expiry date	Jun 2, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH04L7/0029
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A timing error correction technique for use in data communications receivers such as WLAN (Wireless Local Area Network) receivers is provided where an input signal is received that has a timing error, the timing error is corrected, and a signal having a corrected timing error is output. The timing error correction comprises performing an early-late correlation on the signal that has the corrected timing error. The early-late correlation comprises the generation of at least one early and late sample pair, the generation of an error signal that is indicative of the difference between the early and late samples, and the generation of at least one control signal based on the error signal. A time offset correction algorithm is performed dependent on the control signal.

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