Patents by Inventor Christo Thomas

Christo Thomas 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).

  • Efficient extension to viterbi decoder for TCM encoded and non-linear precoded inputs
    Patent number: 11038623
    Abstract: A decoder circuit that supports non-linear precoded signals is disclosed. The decoder circuit comprises a modulo estimation circuit configured to receive a non-linear pre-coded quadrature amplitude modulated (QAM) data symbol and determine a modulo shift estimate associated with the received QAM data symbol, wherein the modulo shift estimate comprises a modulo shift that brings the received QAM symbol within the predetermined QAM constellation. The decoder circuit further comprises a QAM decoder circuit configured to map the received QAM data symbol to a winning constellation point, wherein the winning constellation point comprises a constellation point in an extended QAM constellation associated with the predetermined QAM constellation, and determine a quantized constellation point comprising a constellation point within the predetermined QAM constellation from the winning constellation point, based on applying the modulo shift corresponding to the modulo shift estimate to the winning constellation point.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: June 15, 2021
    Assignee: Intel Corporation
    Inventors: Murti Devarakonda, Rainer Strobel, Christo Thomas, Puneet Bhatia
  • EFFICIENT EXTENSION TO VITERBI DECODER FOR TCM ENCODED AND NON-LINEAR PRECODED INPUTS
    Publication number: 20180337750
    Abstract: A decoder circuit that supports non-linear precoded signals is disclosed. The decoder circuit comprises a modulo estimation circuit configured to receive a non-linear pre-coded quadrature amplitude modulated (QAM) data symbol and determine a modulo shift estimate associated with the received QAM data symbol, wherein the modulo shift estimate comprises a modulo shift that brings the received QAM symbol within the predetermined QAM constellation. The decoder circuit further comprises a QAM decoder circuit configured to map the received QAM data symbol to a winning constellation point, wherein the winning constellation point comprises a constellation point in an extended QAM constellation associated with the predetermined QAM constellation, and determine a quantized constellation point comprising a constellation point within the predetermined QAM constellation from the winning constellation point, based on applying the modulo shift corresponding to the modulo shift estimate to the winning constellation point.
    Type: Application
    Filed: June 27, 2017
    Publication date: November 22, 2018
    Inventors: Murti Devarakonda, Rainer Strobel, Christo Thomas, Puneet Bhatia