Patents Represented by Attorney Katharyn Olson

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  • Generalized viterbi decoding algorithms
    Patent number: 5208816
    Abstract: A data transmission system and method for processing speech, image and other data disclosed which embodies parallel- and serial-generalized Viterbi decoding algorithms (GVA) that produce a rank ordered list of the L best candidates after a trellis search. Error detection is performed by identifying unreliable sequences through comparison of the likelihood metrics of the two or more most likely sequences. Unreliable sequences are re-estimated using inter-frame redundancy or retransmission.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: May 4, 1993
    Assignee: AT&T Bell Laboratories
    Inventors: Nambirajan Seshardi, Carl-Erik W. Sundberg