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:
Apr. 27, 2010
Filed:
Feb. 10, 2006
Leif Wilhelmsson, Dalby, SE;
Michael Faulkner, Melbourne, AU;
Leif Wilhelmsson, Dalby, SE;
Michael Faulkner, Melbourne, AU;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
Inter-carrier interference (ICI) in a kth sub-carrier of an orthogonal frequency division multiplexing (OFDM) signal received at time t is reduced, wherein the received OFDM signal comprises a plurality of sub-carriers. This is achieved by generating a self-interference term, ICI, for a signal received on sub-carrier k−L, wherein L ∈ [ . . . , −3,−2,−1,1,2,3, . . . ], and wherein the self-interference term is an estimate of the data received at time t on the sub-carrier k−L, weighted by a rate of change of the channel through which sub-carrier k−L passes at time t. An ICI cancellation coefficient, Gis obtained, and an estimated ICI term is generated by adjusting the self-interference term, ICI, by an amount based on the ICI cancellation coefficient, G. The estimated ICI term is then subtracted from a term representing a signal received on the kth sub-carrier at time t.
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