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:
Feb. 26, 2008
Filed:
Sep. 30, 2003
Alexander A. Maltsev, Nizhny Novgorod, RU;
Andrey V. Pudeyev, Nizhny Novgorod, RU;
Alexei M. Soupikov, Nizhny Novgorod, RU;
Dmitry V. Akhmetov, Nizhny Novgorod, RU;
Alexander A. Maltsev, Nizhny Novgorod, RU;
Andrey V. Pudeyev, Nizhny Novgorod, RU;
Alexei M. Soupikov, Nizhny Novgorod, RU;
Dmitry V. Akhmetov, Nizhny Novgorod, RU;
Intel Corporation, Santa Clara, CA (US);
Abstract
An orthogonal frequency division multiplexed (OFDM) receiver achieves improved frequency synchronization by generating a fine frequency offset of an OFDM packet with a two-channel frequency offset estimation scheme. Concurrent autocorrelations are performed with training symbols delayed by one and two durations of the training symbols. The respective correlation outputs are integrated over one and a half durations and one half duration to generate phase shift estimates. The phase shift estimates are weighted and combined to generate the fine frequency offset estimate which is used to rotate the phase of OFDM data symbols prior to performing a Fast Fourier Transform (FFT) on the data symbols.