Patent · US Expired

Channel estimation in a multi carrier transmit diversity system

US7324600B2 · kind B2 · utility

6Cited by

8References

22Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Mathias Pauli · Koblenzer Straße, DE
Udo Wachsmann · Schwabach, DE

Key dates

Filing date	Feb 10, 2004
Grant date	Jan 29, 2008
Priority date	—
Expiry date	Dec 20, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH04L5/0048
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method and a stage for estimating channel coefficients in a multi carrier system operating in accordance with a block-code based transmit diversity scheme, in which a data content of a code matrix is multiplexed in a frequency domain are described. The method comprises determining a phase ramp in the frequency domain or an equivalent thereof in the time domain, the phase ramp or the equivalent thereof being comprised within a receive signal after timing synchronization, processing the receive signal to remove the phase ramp or the equivalent thereof and estimating the channel coefficients on the basis of the processed receive signal.

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