Patents by Inventor Avraham Freedman

Avraham Freedman 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: 11595061
    Abstract: Methods and transceivers transmit communication frames that comprise a sequence of N symbols, ensuing payload header symbols, and ensuing payload message symbols. The sequence of N symbols encodes information according to signal-to-noise ratio associated with the communication frame.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: February 28, 2023
    Assignee: SatixFy Israel Ltd.
    Inventors: Doron Rainish, Avraham Freedman
  • Publication number: 20200389189
    Abstract: Methods and transceivers transmit communication frames that comprise a sequence of N symbols, ensuing payload header symbols, and ensuing payload message symbols. The sequence of N symbols encodes information according to signal-to-noise ratio associated with the communication frame.
    Type: Application
    Filed: June 18, 2020
    Publication date: December 10, 2020
    Inventors: Doron Rainish, Avraham Freedman
  • Patent number: 10707904
    Abstract: Methods and transceivers transmit communication frames that comprise a sequence of N symbols, ensuing payload header symbols, and ensuing payload message symbols. The sequence of N symbols encodes information according to signal-to-noise ratio associated with the communication frame.
    Type: Grant
    Filed: November 24, 2019
    Date of Patent: July 7, 2020
    Assignee: SatixFy Isreal Ltd.
    Inventors: Doron Rainish, Avraham Freedman
  • Patent number: 10587334
    Abstract: A method and a system are provided for use in a satellite communications network in which broadcasting services are provided to a mobile terminal. The method comprises: duplicating bits comprised in communications which the satellite is about to broadcast, thereby forming a first stream of bits and a second stream of bits; conveying the first stream of bits in an encoded form along a satellite channel whereas the second stream of bits is conveyed in an encoded form along a terrestrial channel; and combining bits conveyed along the satellite channel with bits conveyed along the terrestrial channel in order to obtain a combined stream of bits.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: March 10, 2020
    Assignee: SATIXFY ISRAEL LTD.
    Inventors: Doron Rainish, Yoel Gat, Avraham Freedman
  • Patent number: 10432283
    Abstract: A novel digital baseband beam forming system is disclosed including a plurality of digital baseband beam forming channels configured and operable for connecting via channel ports to a plurality of antenna channels associated with respective antenna elements for at least one of transmitting and receiving through the plurality of antenna elements one or more waveform signals encoding data streams. The digital baseband beam forming channels are configured and operable to apply at least one of phase and time delays of selective magnitudes to baseband signals associated with data streams encoding the waveform signals transmitted and/or received by the plurality of antenna elements, thereby beamforming said waveform signals to produce, by said waveforms, one or more data encoded beams associated with respective directions of propagation and encoding said data streams respectively. The digital baseband beam forming system may be implemented in chip (e.g.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: October 1, 2019
    Assignee: SATIXFY UK LIMITED
    Inventors: Doron Rainish, Avraham Freedman, Dotan Goberman, Yoel Gat, Leon Benvenisti
  • Patent number: 10374730
    Abstract: Method and system of calibrating antenna array communication are disclosed. A calibration process is used to obtain signatures by at least one antenna element of the antenna array under idealized operational conditions responsive to a calibration sequence transmitted by at least one other antenna element of the antenna array under, to obtain signatures by the at least one antenna element in an operational state of the array responsive to transmission of the calibration sequence by the at least one other antenna element, to compare the signatures obtained under the idealized conditions and in the operational state, and generate calibration data based thereon.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: August 6, 2019
    Assignee: SATIXFY UK LIMITED
    Inventors: Doron Rainish, Avraham Freedman, Dotan Goberman
  • Publication number: 20190123810
    Abstract: A method and a system are provided for use in a satellite communications network in which broadcasting services are provided to a mobile terminal. The method comprises: duplicating bits comprised in communications which the satellite is about to broadcast, thereby forming a first stream of bits and a second stream of bits; conveying the first stream of bits in an encoded form along a satellite channel whereas the second stream of bits is conveyed in an encoded form along a terrestrial channel; and combining bits conveyed along the satellite channel with bits conveyed along the terrestrial channel in order to obtain a combined stream of bits.
    Type: Application
    Filed: September 29, 2016
    Publication date: April 25, 2019
    Inventors: Doron RAINISH, Yoel GAT, Avraham FREEDMAN
  • Publication number: 20190089434
    Abstract: A novel digital baseband beam forming system is disclosed including a plurality of digital baseband beam forming channels configured and operable for connecting via channel ports to a plurality of antenna channels associated with respective antenna elements for at least one of transmitting and receiving through the plurality of antenna elements one or more waveform signals encoding data streams. The digital baseband beam forming channels are configured and operable to apply at least one of phase and time delays of selective magnitudes to baseband signals associated with data streams encoding the waveform signals transmitted and/or received by the plurality of antenna elements, thereby beamforming said waveform signals to produce, by said waveforms, one or more data encoded beams associated with respective directions of propagation and encoding said data streams re spectively. The digital baseband beam forming system may be implemented in chip (e.g.
    Type: Application
    Filed: March 7, 2017
    Publication date: March 21, 2019
    Applicant: SATIXFY UK LIMITED
    Inventors: Doron RAINISH, Avraham FREEDMAN, Dotan GOBERMAN, Yoel GAT, Leon BENVENISTI
  • Publication number: 20190058530
    Abstract: Method and system of calibrating antenna array communication are disclosed. A calibration process is used to obtain signatures by at least one antenna element of the antenna array under idealized operational conditions responsive to a calibration sequence transmitted by at least one other antenna element of the antenna array under, to obtain signatures by the at least one antenna element in an operational state of the array responsive to transmission of the calibration sequence by the at least one other antenna element, to compare the signatures obtained under the idealized conditions and in the operational state, and generate calibration data based thereon.
    Type: Application
    Filed: March 7, 2017
    Publication date: February 21, 2019
    Applicant: SATIXFY UK LIMITED
    Inventors: Doron RAINISH, Avraham FREEDMAN, Dotan GOBERMAN
  • Patent number: 10200158
    Abstract: A method and a device are provided for use at one or more links of a communication network along which communications are exchanged under extremely low SNR conditions. The method comprises a step of transmitting an extended communication frame, which comprises a plurality of basic frames, wherein each of the plurality of basic frames included in the extended frame, comprises the same payload as all other basic frames included in the plurality of basic frames.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: February 5, 2019
    Assignee: SATIXFY ISRAEL LTD.
    Inventors: Doron Rainish, Avraham Freedman
  • Patent number: 10148344
    Abstract: A method includes, in a transceiver (24), receiving from a repeater (32) a received signal, which includes a desired signal for reception and an undesired replica of a transmitted signal that was transmitted from the transceiver and retransmitted by the repeater. A local copy of the transmitted signal is generated in the transceiver. A filter response that, when applied to the transmitted signal before transmission, compensates for a difference in spectral response between the local copy and the undesired replica, is estimated in the transceiver. The undesired replica of the transmitted signal, which is received in the received signal, is matched with the local copy of the transmitted signal, by at least pre-filtering the transmitted signal before transmission with the estimated filter response. Interference caused by the undesired replica to the desired signal is canceled, by combining the local copy and the received signal.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: December 4, 2018
    Assignee: NOVELSAT LTD.
    Inventors: Dan Peleg, Avihay Sadeh-Shirazi, Avraham Freedman
  • Publication number: 20180212715
    Abstract: A method and a device are provided for use at one or more links of a communication network along which communications are exchanged under extremely low SNR conditions. The method comprises a step of transmitting an extended communication frame, which comprises a plurality of basic frames, wherein each of the plurality of basic frames included in the extended frame, comprises the same payload as all other basic frames included in the plurality of basic frames.
    Type: Application
    Filed: July 14, 2016
    Publication date: July 26, 2018
    Inventors: Doron RAINISH, Avraham FREEDMAN
  • Publication number: 20180006709
    Abstract: A method includes, in a transceiver (24), receiving from a repeater (32) a received signal, which includes a desired signal for reception and an undesired replica of a transmitted signal that was transmitted from the transceiver and retransmitted by the repeater. A local copy of the transmitted signal is generated in the transceiver. A filter response that, when applied to the transmitted signal before transmission, compensates for a difference in spectral response between the local copy and the undesired replica, is estimated in the transceiver. The undesired replica of the transmitted signal, which is received in the received signal, is matched with the local copy of the transmitted signal, by at least pre-filtering the transmitted signal before transmission with the estimated filter response. Interference caused by the undesired replica to the desired signal is canceled, by combining the local copy and the received signal.
    Type: Application
    Filed: January 4, 2016
    Publication date: January 4, 2018
    Inventors: Dan Peleg, Avihay Sadeh-Shirazi, Avraham Freedman
  • Publication number: 20170127323
    Abstract: A method for communication includes, in a first earth station (28A) that transmits signals to a second earth station (28B) via a first satellite (24A), initiating a handover from the first satellite to a second satellite (24B) by transmitting the signals via both the first satellite and the second satellite, including transmitting a handover command and a synchronization signal. The handover command is received in the second earth station via the first satellite. In response to the handover command, a switch is made to receive the signals via the second satellite and synchronize to the signal received via the second satellite using the synchronization signal.
    Type: Application
    Filed: April 22, 2015
    Publication date: May 4, 2017
    Inventors: Dan Peleg, Avraham Freedman
  • Patent number: 9002378
    Abstract: A system and method for estimating velocity of a mobile station in a wireless communication system using time-frequency signal processing and a geographical database. The geographical database is used for prediction of ray trajectory and ray power to provide an estimate of propagation delay associated with database points.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: April 7, 2015
    Assignee: Nice-Systems Ltd.
    Inventors: Moshe Levin, Avraham Freedman
  • Publication number: 20140106776
    Abstract: A system and method for estimating velocity of a mobile station in a wireless communication system using time-frequency signal processing and a geographical database. The geographical database is used for prediction of ray trajectory and ray power to provide an estimate of propagation delay associated with database points.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 17, 2014
    Applicant: NICE-SYSTEMS LTD.
    Inventors: Moshe LEVIN, Avraham Freedman
  • Patent number: 8588808
    Abstract: A system and method for estimating velocity of a mobile station in a wireless communication system using time-frequency signal processing and a geographical database. The geographical database is used for prediction of ray trajectory and ray power to provide an estimate of propagation delay associated with database points.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: November 19, 2013
    Assignee: Nice-Systems Ltd.
    Inventors: Moshe Levin, Avraham Freedman
  • Patent number: 8478294
    Abstract: A system and method for locating mobile stations in a wireless communication system such as a cellular system based on at least one received wireless signal and a database of geographical information.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: July 2, 2013
    Assignee: Nice-Systems Ltd.
    Inventors: Moshe Levin, Avraham Freedman, Adam Weinberg, Meir Veisberg, Ori Nurick
  • Publication number: 20120214509
    Abstract: A system and method for locating mobile stations in a wireless communication system such as a cellular system based on at least one received wireless signal and a database of geographical information.
    Type: Application
    Filed: May 2, 2012
    Publication date: August 23, 2012
    Inventors: Moshe LEVIN, Avraham FREEDMAN, Adam WEINBERG, Meir VEISBERG, Ori NURICK
  • Patent number: 8200244
    Abstract: A system and method for locating mobile stations in a wireless communication system such as a cellular system based on at least one received wireless signal and a database of geographical information.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: June 12, 2012
    Assignee: Nice Systems Ltd.
    Inventors: Moshe Levin, Avraham Freedman, Adam Weinberg, Meir Veisberg, Ori Nurick