Patents by Inventor Lay Hong Ang

Lay Hong Ang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Soft output Viterbi algorithm method and decoder
    Patent number: 8806312
    Abstract: A method of decoding a block with a Soft Output Viterbi Algorithm (SOVA) using a trellis representation and a sliding window wherein each position of the sliding window has a path determination stage at one end of the sliding window and a symbol decision stage at another end of the sliding window is disclosed. The method comprises determining, for each path determination stage and for each node of the path determination stage, a surviving path (including a surviving path input symbol and a surviving decision stage node) and a concurrent path (including a concurrent path input symbol and a concurrent decision stage node) based on path metrics. A path metric disparity value is calculated and stored for each node.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: August 12, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Matthias Kamuf, Lay Hong Ang, Wee Guan Lim
  • Soft Output Viterbi Algorithm Method and Decoder
    Publication number: 20120159288
    Abstract: A method of decoding a block with a Soft Output Viterbi Algorithm (SOVA) using a trellis representation and a sliding window wherein each position of the sliding window has a path determination stage at one end of the sliding window and a symbol decision stage at another end of the sliding window is disclosed. The method comprises determining, for each path determination stage and for each node of the path determination stage, a surviving path (including a surviving path input symbol and a surviving decision stage node) and a concurrent path (including a concurrent path input symbol and a concurrent decision stage node) based on path metrics. A path metric disparity value is calculated and stored for each node.
    Type: Application
    Filed: August 12, 2010
    Publication date: June 21, 2012
    Inventors: Matthias Kamuf, Lay Hong Ang, Wee Guan Lim