Patent · US Expired

Constellation manipulation for frequency/phase error correction

US7180964B2 · kind B2 · utility

16Cited by

9References

57Claims

0Family size

Assignee

Advanced Micro Devices, Inc. · US

Inventors

Joerg Borowski · Dresden, DE
Uwe Eckhardt · Dresden, DE
Menno Mennenga · Dresden, DE

Key dates

Filing date	Nov 1, 2002
Grant date	Feb 20, 2007
Priority date	—
Expiry date	Apr 24, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2027/0067
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

An error correction technique for data communication receivers such as WLAN (Wireless Local Area Network) receivers is provided. The error correction technique is for correcting a frequency and/or phase error in an incoming digitally modulated signal. A constellation manipulator is provided that is adapted to manipulate the phase constellation system of the incoming digitally modulated system by mapping each constellation point of the phase constellation system to a predefined range of phase angles. The predefined range has a width of less than 2π. Further, an error detector is provided that is connected to receive data from the constellation manipulator. The data pertains to the manipulated phase constellation system. The error detector is adapted to evaluate the data to detect the frequency and/or phase error.

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