Patents by Inventor Qiujun Huang

Qiujun Huang 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).

  • Patent number: 10594345
    Abstract: A digital communication method includes receiving user bursts at a receiver, generating, by the receiver, an active user list of the user bursts according to a first criterion, selecting, by the receiver, prioritized user bursts from the user bursts in the active user list according to a second criterion that is different from the first criterion to generate a priority user list of the prioritized user bursts, and executing, by the receiver, successive interference cancellation according to the priority user list to demodulate the prioritized user bursts.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: March 17, 2020
    Assignee: HUGHES NETWORK SYSTEMS, LLC
    Inventors: Xiaoming Wu, Qiujun Huang
  • Publication number: 20190207628
    Abstract: Systems and methods are described for performing Layered Belief LDPC decoding on received Standard Belief LDPC encoded data bursts. In on implementation, a receiver: demodulates a signal, the demodulated signal including a noise corrupted signal derived from a codeword encoded using standard belief LDPC encoding; converts the noise corrupted signal derived from the standard belief LDPC encoded codeword to a noise corrupted signal derived from a layered belief LDPC encoded codeword; and decodes the noise corrupted signal derived from the layered belief LDPC encoded codeword using a layered belief LDPC decoder. In further implementations, systems are described for reducing collisions in Layered Belief LDPC decoders that occur when multiple parity checks need the same soft decision at the same time. In these implementations, elements in an original LBD decoder table are rearranged to increase the distance between elements specifying the same location in a RAM where soft decisions are stored.
    Type: Application
    Filed: March 8, 2019
    Publication date: July 4, 2019
    Inventors: Gaurav Bhatia, Qiujun Huang, Mustafa Eroz
  • Patent number: 10270466
    Abstract: Systems and methods are described for performing Layered Belief LDPC decoding on received Standard Belief LDPC encoded data bursts. In on implementation, a receiver: demodulates a signal, the demodulated signal including a noise corrupted signal derived from a codeword encoded using standard belief LDPC encoding; converts the noise corrupted signal derived from the standard belief LDPC encoded codeword to a noise corrupted signal derived from a layered belief LDPC encoded codeword; and decodes the noise corrupted signal derived from the layered belief LDPC encoded codeword using a layered belief LDPC decoder. In further implementations, systems are described for reducing collisions in Layered Belief LDPC decoders that occur when multiple parity checks need the same soft decision at the same time. In these implementations, elements in an original LBD decoder table are rearranged to increase the distance between elements specifying the same location in a RAM where soft decisions are stored.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: April 23, 2019
    Assignee: Hughes Network Systems, LLC
    Inventors: Gaurav Bhatia, Qiujun Huang, Mustafa Eroz
  • Publication number: 20180048328
    Abstract: Systems and methods are described for performing Layered Belief LDPC decoding on received Standard Belief LDPC encoded data bursts. In on implementation, a receiver: demodulates a signal, the demodulated signal including a noise corrupted signal derived from a codeword encoded using standard belief LDPC encoding; converts the noise corrupted signal derived from the standard belief LDPC encoded codeword to a noise corrupted signal derived from a layered belief LDPC encoded codeword; and decodes the noise corrupted signal derived from the layered belief LDPC encoded codeword using a layered belief LDPC decoder. In further implementations, systems are described for reducing collisions in Layered Belief LDPC decoders that occur when multiple parity checks need the same soft decision at the same time. In these implementations, elements in an original LBD decoder table are rearranged to increase the distance between elements specifying the same location in a RAM where soft decisions are stored.
    Type: Application
    Filed: August 15, 2016
    Publication date: February 15, 2018
    Applicant: Hughes Network Systems, LLC
    Inventors: Gaurav Bhatia, Qiujun Huang, Mustafa Eroz