Patents by Inventor Filippo Tosato

Filippo Tosato 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: 10439693
    Abstract: In an embodiment a method of feeding back channel state information from a beamformee device to a beamformer device is disclosed. The method comprises receiving, at a plurality of antennas of the beamformee device, signals from the beamformer device; constructing a beamforming matrix, the beamforming matrix spanning a vector subspace and indicating the signals received by each of the plurality of antennas of the beamformee device; determining a first feedback matrix that spans the vector subspace of the beamforming feedback matrix such that it can be compressed with a lower number of non-zero coefficients than the beamforming feedback matrix; compressing the first feedback matrix into a plurality of coefficients; and transmitting an indication of the plurality of coefficients to the beamformer device.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: October 8, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Filippo Tosato, Magnus Stig Torsten Sandell
  • Patent number: 10411771
    Abstract: In an embodiment, a wireless communication method of transmitting a plurality of data streams from a transmitter to a receiver is disclosed. The transmitter comprises a plurality of antennas.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: September 10, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Filippo Tosato, Magnus Stig Torsten Sandell
  • Patent number: 10404409
    Abstract: In an embodiment, a method of managing distributed storage in a wireless network is disclosed. The wireless network comprises a plurality of data generating nodes, each data generating node configured to generate and store data symbols and parity symbols. The parity symbols depend on data symbols stored on other data generating nodes.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: September 3, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Magnus Stig Torsten Sandell, Filippo Tosato, Sedat Gormus
  • Patent number: 10225125
    Abstract: A method of selecting a carrier frequency offset tracking pilot signal in an access point of a wireless network is disclosed. The wireless network includes the access point and a plurality of terminals. The method includes receiving, at a plurality of antennas of the access point, signals from each of the plurality of terminals; estimating, from the received signals, a spatial channel signature for each of the plurality of terminals; selecting, for each terminal of the plurality of terminals, using the spatial channel signatures, a carrier frequency offset tracking pilot signal for that terminal from a plurality of pre-coded pilot signals; and transmitting an indication of the selected carrier frequency offset tracking pilot signals to the respective terminal.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: March 5, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Magnus Stig Torsten Sandell, Filippo Tosato
  • Patent number: 10122560
    Abstract: An OFDM transmitter comprising an input for acquiring or receiving a signal to be transmitted, an output for transmitting a PAPR reduced version of the signal, a processor and memory storing code for execution by the processor. The processor, when executing the code, is configure to determine a plurality of possible values of tone reservation, hereinafter referred to as TR, tones for use in TR based PAPR reduction and to perform a tree search over some or all of the possible values under a first constraint that the average power per TR tone does not exceed the average power per tone used for data transmission and a second constraint that selected values for the TR tones reduce PAPR.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: November 6, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Filippo Tosato, Magnus Stig Torsten Sandell
  • Patent number: 10097246
    Abstract: A control method for a communication network that has a transmitter with an array of transmit antennas and that has at least one receiver communicating with the transmitter. The receiver performs a channel measurement for a receive antenna of the receiver using a signal transmitted from the transmitter to the receiver. The receiver further determines channel coefficients for each of an array of transmit antennas at the transmitter from an output of the channel measurement, and then applies a linear, reversible and orthogonal transform to the channel coefficients, thus ascertaining channel component coefficients indicative of the individual weight of respective channel components in a transform domain. The receiver then selects one or more channel components in the transform domain and communicates to the transmitter a control signal indicative of one or more preferred channel components or a magnitude of one or more channel component coefficients, or both, in quantized form.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: October 9, 2018
    Assignee: Koninklijke Philips N.V.
    Inventors: Filippo Tosato, Timothy James Moulsley
  • Patent number: 10090863
    Abstract: A decoder for decoding a received set of blocks each including a plurality of data symbols and a plurality of parity symbols, wherein the received set of blocks is a subset of a complete set of blocks, the complete set of blocks including at least one erased block not included in the received set of blocks, the decoder including: a storage for a coding matrix which is the kronecker product of a totally non-singular matrix with an antidiagonal matrix; and a processor operable to determine data symbols of the at least one erased block using the encoding matrix.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: October 2, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Filippo Tosato, Magnus Stig Torsten Sandell
  • Patent number: 10038587
    Abstract: There is provided a device and method for demodulating a pulse amplitude modulated, hereinafter referred to as PAM, signal. The device comprises memory storing a set of boundaries of regions in which the log likelihood ratio, hereinafter referred to as LLR, for each bit to be determined is represented by a linear function of the received signal, along with the properties of the linear function for each bit for each region; and a controller. The controller is configured to: receive a PAM signal to be demodulated; determine which region the signal falls within; for each bit to be determined, retrieve the properties of the linear function for the LLR for the bit within the determined region and determine, from this linear function, the LLR value for the bit; and demodulate the signal based on the determined LLR values.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: July 31, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Magnus Stig Torsten Sandell, Filippo Tosato, Amr Ismail
  • Patent number: 10003436
    Abstract: A device for use in demodulating modulated signals by determining a value for a log likelihood ratio. The device has a storage device to store executable instructions and a processor to execute the instructions stored on the memory device.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: June 19, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Filippo Tosato, Amr Ismail, Magnus Stig Torsten Sandell
  • Publication number: 20180109408
    Abstract: A device comprising an input for receiving an OFDM signal, a processor and a memory for storing code. The code is configured to, when executed by the processor, cause the processor to generate a modified signal with reduced PAPR based on the OFDM signal by performing first and second PAPR reduction methods. In the first PAPR reduction method an intermediate signal is generated so that the number of signal peaks above a predetermined threshold is substantially minimised. In the second PAPR reduction method the PAPR of the intermediate signal is reduced.
    Type: Application
    Filed: June 25, 2015
    Publication date: April 19, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Magnus Stig Torsten SANDELL, Filippo TOSATO
  • Publication number: 20180083734
    Abstract: In an embodiment, a method of managing distributed storage in a wireless network is disclosed. The wireless network comprises a plurality of data generating nodes, each data generating node configured to generate and store data symbols and parity symbols. The parity symbols depend on data symbols stored on other data generating nodes.
    Type: Application
    Filed: December 11, 2014
    Publication date: March 22, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Magnus Stig Torsten SANDELL, Filippo TOSATO, Sedat GORMUS
  • Publication number: 20180034680
    Abstract: There is provided a device and method for demodulating a pulse amplitude modulated, hereinafter referred to as PAM, signal. The device comprises memory storing a set of boundaries of regions in which the log likelihood ratio, hereinafter referred to as LLR, for each bit to be determined is represented by a linear function of the received signal, along with the properties of the linear function for each bit for each region; and a controller. The controller is configured to: receive a PAM signal to be demodulated; determine which region the signal falls within; for each bit to be determined, retrieve the properties of the linear function for the LLR for the bit within the determined region and determine, from this linear function, the LLR value for the bit; and demodulate the signal based on the determined LLR values.
    Type: Application
    Filed: October 22, 2015
    Publication date: February 1, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Magnus Stig Torsten SANDELL, Filippo TOSATO, Amr ISMAIL
  • Publication number: 20180034675
    Abstract: An OFDM transmitter comprising an input for acquiring or receiving a signal to be transmitted, an output for transmitting a PAPR reduced version of the signal, a processor and memory storing code for execution by the processor. The processor, when executing the code, is configure to determine a plurality of possible values of tone reservation, hereinafter referred to as TR, tones for use in TR based PAPR reduction and to perform a tree search over some or all of the possible values under a first constraint that the average power per TR tone does not exceed the average power per tone used for data transmission and a second constraint that selected values for the TR tones reduce PAPR.
    Type: Application
    Filed: October 16, 2015
    Publication date: February 1, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Filippo TOSATO, Magnus Stig Torsten SANDELL
  • Publication number: 20180013473
    Abstract: In an embodiment, a wireless communication method of transmitting a plurality of data streams from a transmitter to a receiver is disclosed. The transmitter comprises a plurality of antennas.
    Type: Application
    Filed: March 30, 2015
    Publication date: January 11, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Filippo TOSATO, Magnus Stig Torsten SANDELL
  • Patent number: 9839053
    Abstract: A radio communication station in a radio communication system having a plurality of radio communication devices, derives a quantization parameter from control indications received from respective radio communication devices and transmits the quantization parameter to the radio communication devices on at least one downlink channel. The radio communication devices receive the quantization parameter, determine respective channel state metrics for the downlink channel, respectively quantize the determined respective channel state metrics by applying quantization ranges indicated by the quantization parameter, determine respective control indications indicative of the respective quantized channel state metrics, and transmit to the radio communication station respective signals indicating the determined respective control indications as respective random access transmissions on an uplink channel.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: December 5, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Matthew P. J. Baker, Timothy J. Moulsley, Filippo Tosato, Domenico Porcino
  • Publication number: 20170288811
    Abstract: A device for use in demodulating modulated signals by determining a value for a log likelihood ratio. The device has a storage device to store executable instructions and a processor to execute the instructions stored on the memory device.
    Type: Application
    Filed: March 29, 2017
    Publication date: October 5, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Filippo TOSATO, Amr ISMAIL, Magnus Stig Torsten SANDELL
  • Publication number: 20170141828
    Abstract: In an embodiment a method of feeding back channel state information from a beamformee device to a beamformer device is disclosed. The method comprises receiving, at a plurality of antennas of the beamformee device, signals from the beam—former device; constructing a beamforming matrix, the beamforming matrix spanning a vector subspace and indicating the signals received by each of the plurality of antennas of the beamformee device;determining a first feedback matrix that spans the vector sub—space of the beamforming feedback matrix such that it can be compressed with a lower number of non-zero coefficients than the beamforming feedback matrix; compressing the first feedback matrix into a plurality of coefficients; and transmitting an indication of the plurality of coefficients to the beamformer device.
    Type: Application
    Filed: August 8, 2014
    Publication date: May 18, 2017
    Inventors: Filippo TOSATO, Magnus Stig Torsten SANDELL
  • Publication number: 20170111201
    Abstract: In an embodiment a method in an access point of a wireless is disclosed. The wireless network comprises the access point and a plurality of terminals. The method comprises receiving, at a plurality of antennas of the access point, signals from each of the plurality of terminals; estimating, from the received signals, a spatial channel signature for each of the plurality of terminals; selecting, for each terminal of the plurality of terminals, using the spatial channel signatures, a carrier frequency offset tracking pilot signal for that terminal from a plurality of pre-coded pilot signals; and transmitting an indication of the selected carrier frequency offset tracking pilot signals to the respective terminal.
    Type: Application
    Filed: July 7, 2014
    Publication date: April 20, 2017
    Inventors: Magnus Stig Torsten SANDELL, Filippo TOSATO
  • Publication number: 20160294419
    Abstract: In an embodiment a method of generating an erasure code for a network comprising a plurality of nodes, wherein the nodes of the network store data symbols and the number of data symbols stored on a first node of the network is different from the number of data symbols stored on a second node of the network, the erasure code indicating the dependance of parity symbols stored by the nodes of the network on the data symbols such that the data symbols stored on nodes of the network can be determined from parity symbols and data symbols stored on other nodes of the network, comprises determining from the distribution of data symbols among the nodes, an optimal parity symbol distribution;based on the optimal parity symbol distribution and the distribution of data symbols, selecting a code generation method; and generating the erasure code using the selected code generation method.
    Type: Application
    Filed: November 15, 2013
    Publication date: October 6, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Magnus Stig Torsten SANDELL, Filippo TOSATO
  • Patent number: 9386444
    Abstract: The present invention relates to a method for transmission of control information from a primary station to at least one secondary station, comprising the step of transmitting with a first set of control information parameters control information corresponding to data transmission with a first set of data parameters and transmitting with a second set of control information parameters control information corresponding to data transmission with a second set of data parameters, wherein at least one control information parameter has a difference in value between the two sets of control information parameters, said difference in value having a dependency on the difference between the value of a data parameter in the first set of data parameters and the value of the data parameter in the second set of data parameters, said data parameter being a different parameter from the at least one control information parameter.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: July 5, 2016
    Assignee: Koninklijke Philips N.V.
    Inventors: Matthew P. J. Baker, Timothy James Moulsley, Filippo Tosato