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:
Mar. 27, 2007
Filed:
Jun. 24, 2004
Peter A. Beerel, Westminister, CA (US);
Keith M. Chugg, Burbank, CA (US);
Georgios D. Dimou, San Diego, CA (US);
Phunsak Thiennviboon, San Diego, CA (US);
Peter A. Beerel, Westminister, CA (US);
Keith M. Chugg, Burbank, CA (US);
Georgios D. Dimou, San Diego, CA (US);
Phunsak Thiennviboon, San Diego, CA (US);
University of Southern California, Los Angeles, CA (US);
Abstract
Decoding an encoded signal (for example, a turbo encoded signal, a block encoded signal or the like) is performed by demodulating the received encoded signal to produce soft information, and iteratively processing the soft information with one or more soft-in/soft-output (SISO) modules. At least one of the SISO modules uses a tree structure to compute forward and backward state metrics. More generally, iterative detection is performed by receiving an input signal corresponding to one or more outputs of a module whose soft-inverse can be computed by running the forward-backward algorithm on a trellis representation of the module, and determining the soft inverse of the module by computing forward and backward state metrics of the received input signal using a tree structure.