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:
Sep. 30, 2014
Filed:
Mar. 25, 2013
Apple, Inc., Cupertino, CA (US);
Thierry Lucidarme, Montigny le Bretonneaux, FR;
Nidham Ben Rached, Paris, FR;
Apple Inc., Cupertino, CA (US);
Abstract
The invention relates to a method of estimating symbols carried by a digital signal that is received by a receiver over a communication channel (), said symbols being multiplexed on orthogonal frequency sub-carriers. The inventive method comprises the following steps in relation to each symbol carried by the digital signal, consisting in: performing at least two transforms towards the frequency domain () on a portion of the received signal essentially corresponding to the symbol, said transforms being performed with a determined time lag () therebetween; estimating the parameters (r, r, . . . , r, r', r′, . . . , r′) of the communication channel from pre-determined binary information contained in the digital signal; and estimating the symbol from a combination of the result of each of the transforms performed and the estimated communication channel parameters.