Tuesday, June 09, 2009 8:05:49 AM
Mesecher , et al. June 9, 2009
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Interference cancellation in a spread spectrum communication system
Abstract
A code division multiple access communication system transmits a pilot and traffic signal over a shared spectrum. The pilot and traffic signal have an associated code and are received over the shared spectrum. The received signals are sampled and the samples are delayed to produce a window. A weighted value for each despread pilot code window sample is determined using an adaptive algorithm. Each window sample is despread with a traffic code. Each despread traffic code window sample is weighted according to a weight corresponding to its respective pilot code sample.
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Inventors: Mesecher; David K. (Huntington Station, NY), Reznik; Alexander (Titusville, NJ), Grieco; Donald M. (Manhassett, NY), Cheung; Gary (Whitestone, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/301,666
Filed: December 13, 2005
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
10923950 Aug., 2004 6985515
10423230 Aug., 2004 6782040
09892369 Jun., 2003 6574271
09659858 Aug., 2001 6278726
09602963 Apr., 2002 6373877
09394452 Sep., 2000 6115406
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Current U.S. Class: 375/130 ; 370/335; 375/146; 375/147; 375/148
Current International Class: H04B 1/69 (20060101); H04B 1/10 (20060101)
Field of Search: 375/148,346,144,130,146,147,267,347,295 370/320,335,342
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