United States Patent 7,773,704
Buchert , et al. August 10, 2010
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Method and apparatus for parallel midamble cancellation
Abstract
Method and apparatus for performing midamble cancellation to remove midamble interference from the convolution tail of data field 1 and the first W-1 chips of the midamble field which results from the delay spread of the multipath channel and for canceling the first W-1 chip midamble spread in the data field 2, which operations are performed substantially simultaneously. The received burst, typically a TDD burst, is stored, the midamble interference and the corresponding parts in the received burst is removed and the resulting burst is applied to a multi-user detector to obtain the symbol sequences.
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Inventors: Buchert; Ryan S. (Phoenixville, PA), Nasuti; Tonino (Norristown, PA), Timmerman; Chayil S. (King of Prussia, PA)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 12/177,463
Filed: July 22, 2008
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
10335359 Dec., 2002 7428278
60379196 May., 2002
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Current U.S. Class: 375/346 ; 375/130; 375/149; 375/150; 375/316; 375/348
Current International Class: H04B 1/10 (20060101)
Field of Search: 375/130,149,150,185,346,348,316
