The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 2010
Filed:
May. 27, 2003
Rodolphe Legouable, Cesson-Sevigne, FR;
Denis Callonnec, Rennes, FR;
Maryline Helard, Rennes, FR;
France Telecom, Paris, FR;
Abstract
The invention relates to a method of determining the time shift and/or the power of a received signal incorporating a reference sequence () and transmitted by multicarrier modulation on a set (M) of carriers spaced from each other by a distance nΔf where n is a natural integer and Δf is a constant. An inverse Fourier transform is applied to the phase variations between components of the signal carried by carriers separated by kΔf for consecutive values of k in order to obtain the impulse response (RI) of the signal and the time shift τand/or the power of the received signal is/are determined from the impulse response by observation of the highest level amplitude peak.