The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2012
Filed:
Jun. 18, 2009
Sharad D. Sambhwani, San Diego, CA (US);
Wei Zeng, San Diego, CA (US);
Wei Zhang, San Diego, CA (US);
Jan K Wegrzyn, San Diego, CA (US);
Mehraban Iraninejad, Del Mar, CA (US);
Sharad D. Sambhwani, San Diego, CA (US);
Wei Zeng, San Diego, CA (US);
Wei Zhang, San Diego, CA (US);
Jan K Wegrzyn, San Diego, CA (US);
Mehraban Iraninejad, Del Mar, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
The present patent application discloses a method and apparatus for decoding, comprising decoding signals iteratively, mutually exchanging extrinsic information, calculating APP LLRs for both systematic and parity bits and making a hard decision after a plurality of iterations is completed based on accumulated soft information. The present patent application also discloses a method and apparatus for post decoding soft interference canceling, comprising generating updated a posteriori probabilities for systematic and parity bits from a turbo decoder, mapping the posteriori probabilities to soft symbols, quantizing the soft symbols, re-encoding a data packet, filtering a chip sequence, reconstructing an interference waveform, and scaling reconstruction filter coefficients using the symbols.