United States Patent 8,019,036
Voltz , et al. September 13, 2011
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Method and apparatus for correcting sampler clock frequency offset in OFDM MIMO systems
Abstract
In an orthogonal frequency division multiplexed (OFDM) multiple-in multiple-out (MIMO) wireless communication system, a method for correcting sampler clock frequency offset in a receiver comprises acquiring the frequency offset and symbol timing in a received signal by the receiver. The estimated value of a fractional offset is computed, and a correction in the frequency domain based upon the estimated value of the fractional offset is performed.
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Inventors: Voltz; Peter J. (Commack, NY), Olesen; Robert Lind (Huntington, NY), Lu; I-Tai (Dix Hills, NY), Koo; Chang-Soo (Melville, NY), Dai; Qingyuan (Germantown, MD), Yang; Yongwen E. (Hillsborough, NJ), Teng; Hui-Yuan (Forest Hills, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/681,341
Filed: March 2, 2007
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
60779769 Mar., 2006
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Current U.S. Class: 375/373 ; 327/141; 375/354; 375/371; 709/248; 714/12
Current International Class: H03D 3/24 (20060101)
Field of Search: 375/260
PPP
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