Patents by Inventor Prachi Raikar

Prachi Raikar 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).

  • Publication number: 20240146343
    Abstract: Digital pre-distorter (DPD) coefficients can be used to compensate for non-linearity of a power amplifier (PA). A system can receive a defined waveform from transmit hardware. The system can transmit an output waveform with a defined modulation from the PA. The system can capture samples of the output waveform. The system can submit the samples to a processing system temporarily connected to a transmitter system. The system can compute a PA model using the defined waveform and the samples. The system can determine a plurality of Digital Pre-Distorter (DPD) coefficients for a plurality of power levels, frequencies, and temperatures based on the PA model. The system can store the plurality of DPD coefficients to a memory of the transmitter system. Additionally, the system can add predistortions using the plurality of DPD coefficients to a plurality of input waveforms to correct for impairments introduced by the PA.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 2, 2024
    Inventors: Santharam Gurumani, Prachi Raikar, Bala Subramaniam
  • Patent number: 9628867
    Abstract: A receiver is used with third code blocks based on first code blocks, second code blocks, and a planning code block. The first code blocks are associated with a first sequence number and modulated with a first modulation scheme. The second code blocks are associated with a second sequence number and modulated with a second modulation scheme. The planning code block associates the third code blocks with the first code blocks and the second code blocks. The receiver includes a de-multiplexing portion, which includes a code block selector and a look up table, that outputs a de-multiplexed signal based on the third code blocks. The code block selector selects a code block from the third code blocks to output as the de-multiplexed signal based on entries in the look up table. The receiver also includes a recovery portion that outputs received code blocks based on the de-multiplexed signal.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: April 18, 2017
    Assignee: Hughes Network Systems, LLC
    Inventors: Liming Qin, Marwan Adas, Prachi Raikar, David Roos, Yezdi Antia, Neal Becker
  • Publication number: 20140337896
    Abstract: A receiver is used with third code blocks based on first code blocks, second code blocks, and a planning code block. The first code blocks are associated with a first sequence number and modulated with a first modulation scheme. The second code blocks are associated with a second sequence number and modulated with a second modulation scheme. The planning code block associates the third code blocks with the first code blocks and the second code blocks. The receiver includes a de-multiplexing portion, which includes a code block selector and a look up table, that outputs a de-multiplexed signal based on the third code blocks. The code block selector selects a code block from the third code blocks to output as the de-multiplexed signal based on entries in the look up table. The receiver also includes a recovery portion that outputs received code blocks based on the de-multiplexed signal.
    Type: Application
    Filed: July 28, 2014
    Publication date: November 13, 2014
    Inventors: Liming Qin, Marwan Adas, Prachi Raikar, David Roos, Yezdi Antia, Neal Becker
  • Patent number: 8793745
    Abstract: A receiver is used with third code blocks based on first code blocks, second code blocks, and a planning code block. The first code blocks are associated with a first sequence number and modulated with a first modulation scheme. The second code blocks are associated with a second sequence number and modulated with a second modulation scheme. The planning code block associates the third code blocks with the first code blocks and the second code blocks. The receiver includes a de-multiplexing portion, which includes a code block selector and a look up table, that outputs a de-multiplexed signal based on the third code blocks. The code block selector selects a code block from the third code blocks to output as the de-multiplexed signal based on entries in the look up table. The receiver also includes a recovery portion that outputs received code blocks based on the de-multiplexed signal.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: July 29, 2014
    Assignee: Hughes Network Systems, LLC
    Inventors: Liming Qin, Marwan Adas, Prachi Raikar, David Roos, Yezdi Antia, Neal Becker
  • Publication number: 20120198502
    Abstract: A receiver is used with third code blocks based on first code blocks, second code blocks, and a planning code block. The first code blocks are associated with a first sequence number and modulated with a first modulation scheme. The second code blocks are associated with a second sequence number and modulated with a second modulation scheme. The planning code block associates the third code blocks with the first code blocks and the second code blocks. The receiver includes a de-multiplexing portion, which includes a code block selector and a look up table, that outputs a de-multiplexed signal based on the third code blocks. The code block selector selects a code block from the third code blocks to output as the de-multiplexed signal based on entries in the look up table. The receiver also includes a recovery portion that outputs received code blocks based on the de-multiplexed signal.
    Type: Application
    Filed: April 3, 2012
    Publication date: August 2, 2012
    Applicant: HUGHES NETWORKS SYSTEMS, LLC
    Inventors: Liming Qin, Marwan Adas, Prachi Raikar, David Roos, Yezdi Antia, Neal Becker