Patents Examined by Shelby A Chase
  • Interleavers for turbo code
    Patent number: 6347385
    Abstract: Systems and methods for interleaving codes includes a processor that acts on a data frame received and stored in a memory. The processor separates portions of the data frame and permutes the portions, achieving maximum data scattering by using equations based on number theory.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: February 12, 2002
    Assignee: Nortel Networks Limited
    Inventors: Jian Cui, Tong Wen, Rui Wang, Mikhail Bakulin, Alexander Shloma, Vitally Kreyndelin, Yuri Shinakov
  • Method and system for fast maximum a posteriori decoding
    Patent number: 6343368
    Abstract: Processing delay associated with MAP decoding (and variants thereof) is reduced by processing forward and reverse state metrics in parallel. Further reductions in processing complexity can be achieved by omitting redundant operations and multiplexing processing units' functionality.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: January 29, 2002
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Jürgen Lerzer