Patent · US Expired

LMS-based channel estimation

US7042962B2 · kind B2 · utility

0Cited by

3References

64Claims

0Family size

Assignee

Advanced Micro Devices, Inc. · US

Inventors

Michael Schmidt · Dresden, DE
Menno Mennenga · Dresden, DE
Thomas Hanusch · Dresden, DE

Key dates

Filing date	Sep 27, 2002
Grant date	May 9, 2006
Priority date	—
Expiry date	Nov 12, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH04L25/025
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A data communications device and method is provided that apply an LMS (Least Mean Square) channel estimation. A coefficient calculation unit generates a signal that represents at least one channel coefficient that is indicative of a property of the channel such as its finite impulse response. Further, an error calculation unit generates an error signal. Dependent on the error signal, the channel coefficients are updated by performing the LMS algorithm using a step size of two to a negative integer power. This allows for a simple, less complex implementation, and may be applied in a wireless local area network receiver for adjusting filter coefficients.

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