InterDigital Inc (IDCC)

[Gamco]

United States Patent 8,036,325
Chitrapu , et al. October 11, 2011
Wireless communication method and apparatus for performing knowledge-based and blind interference cancellation

Abstract
A method and apparatus for cancelling interference in received signals are disclosed. A receiver includes a knowledge-based interference cancellation unit, a blind interference cancellation unit and a trade-off management unit. The knowledge-based interference cancellation unit cancels interference in the received signals based on pre-known knowledge and the blind interference cancellation unit cancels interference in the received signals without the pre-known knowledge. The trade-off management unit determines a trade-off between knowledge-based interference cancellation and blind interference cancellation, whereby at least one of the knowledge-based interference cancellation and the blind interference cancellation is selectively preformed based on the trade-off. The interference cancellation may be performed by implementing at least one of a successive interference cancellation (SIC), a principal component analysis (PCA) and an independent component analysis (ICA). The knowledge-based and the blind interference cancellation may be performed in parallel, in series or in any combination.

Inventors: Chitrapu; Prabhakar R. (Blue Bell, PA), Goldberg; Steven Jeffrey (Downingtown, PA)
Assignee: Interdigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/531,515
Filed: September 13, 2006
Related U.S. Patent Documents
Application Number Filing Date Patent Number Issue Date
60780711 Mar., 2006
Current U.S. Class: 375/346 ; 327/310; 327/384; 327/551; 348/607; 455/296
Current International Class: H03D 1/04 (20060101); H03K 6/04 (20060101); H04B 1/10 (20060101); H04L 25/08 (20060101); H04L 1/00 (20060101); H03D 1/06 (20060101); H03K 5/01 (20060101)

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