United States Patent 7,949,037
Ozluturk , et al. May 24, 2011
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Base station for carrier offset recovery
Abstract
A base station for carrier offset recovery. An adaptive matched filter produces a filtered signal. A rake receiver provides relative path values of multipath components. A mixer generates channel impulse response estimates. A channel despreader despreads the filtered signal using the pseudo-noise signal generated to produce a despread channel signal of the selected channel. A pilot channel despreader despreads the filtered signal using a pseudo-noise signal generator to produce a despread pilot signal of the pilot channel. A hard decision processor determines a symbol value of the despread channel signal. A complex conjugate processor generates a complex conjugate of the symbol value as a correction signal. A phase-locked loop produces a phase correction signal to recover carrier offset.
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Inventors: Ozluturk; Fatih M (Port Washington, NY), Mesecher; David K (Huntington Station, NY), Jacques; Alexander M (Kings Park, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/532,589
Filed: September 18, 2006
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
11189370 Jul., 2005 7110443
10764763 Sep., 2005 6944209
10357869 Mar., 2004 6707845
10043850 Mar., 2003 6516022
09078417 Apr., 2002 6366607
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Current U.S. Class: 375/148
Current International Class: H04B 1/00 (20060101)
Field of Search: 370/342,330,335,230,411,320 375/148,130,152,375,376,342,150
PPP
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