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. 06, 2014
Filed:
Sep. 20, 2011
Mariam Motamed, San Diego, CA (US);
Alexei Yurievitch Gorokhov, San Diego, CA (US);
Mike L. Mccloud, San Diego, CA (US);
Parvathanathan Subrahmanya, Sunnyvale, CA (US);
Mariam Motamed, San Diego, CA (US);
Alexei Yurievitch Gorokhov, San Diego, CA (US);
Mike L. Mccloud, San Diego, CA (US);
Parvathanathan Subrahmanya, Sunnyvale, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Estimating a channel impulse response (CIR) for a wireless transmission, for example a multimedia broadcast multicast services single frequency network (MBSFN) transmission, may be performed by a receiver of an wireless subframe, without requiring operational memory in excess of what is needed for CIR estimation of unicast signaling, while providing enhanced delay spread coverage. The wireless subframe may be a MBSFN subframe. The receiver may form an aggregate vector of pilot tones extracted from an OFDM reference symbol of an wireless subframe. The receiver may subsample the aggregate vector to obtain a plurality of sub-vectors each comprising a distinct subsampling phase. The receiver may process the plurality of sub-vectors using an inverse fast Fourier transform to obtain time domain representations of each of the sub-vectors. The receiver may combine the time domain representations in various ways to obtain a CIR estimate for the wireless subframe.