Patents by Inventor Hamidreza Farmanbar

Hamidreza Farmanbar 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: 8971384
    Abstract: Method and apparatus for decoding a transmitted signal by a receiver in a MIMO system into a first estimate component for estimating a first signal, a first interference component indicating interference resulting from a correlation relationship among a set of signals to be transmitted, and a first noise component. A base station generates the transmitted signal from the set of signals through a coding process, the coding process defining a correlation relationship amongst the set of signals. The correlation information about the correlation relationship is transmitted to the receiver directly or by a dedicated reference symbol. The decoding is performed by determining a linear receiver filter for the first signal in accordance with the correlation information, and de-correlating the first signal and interferences.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: March 3, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hamidreza Farmanbar, Aaron Callard, Mohammadhadi Baligh
  • Publication number: 20140362688
    Abstract: A system and method for agile wireless access network is provided. A method embodiment for agile radio access network management includes determining, by a network controller, capabilities and neighborhood relations of radio nodes in the radio access network. The network controller then configures a backhaul network infrastructure for the radio access network in accordance with the capabilities and the neighborhood relations of the radio nodes.
    Type: Application
    Filed: November 1, 2013
    Publication date: December 11, 2014
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Hang Zhang, Gamini Senarath, Aaron Callard, Hamidreza Farmanbar, Ngoc-Dung Dao, Alex Stephenne, Petar Djukic, Xu Li, Kaveh Shafiee, Philippe Leroux
  • Publication number: 20140362730
    Abstract: An embodiment method includes receiving service parameters for a service and locating logical network nodes for a service-specific data plane logical topology at respective physical network nodes among a plurality of physical network nodes according to the service parameters, a service-level topology, and a physical infrastructure of the plurality of physical network nodes. The method also includes defining connections among the logical network nodes according to the service parameters, the service-level topology, and the physical infrastructure, and defining respective connections for a plurality of UEs to at least one of the logical network nodes according to the service parameters, the service-level topology, and the physical infrastructure. The method further includes defining respective functionalities for the logical network nodes.
    Type: Application
    Filed: June 5, 2014
    Publication date: December 11, 2014
    Inventors: Hang Zhang, Aaron Callard, Gamini Senarath, Petar Djukic, Alex Stephenne, Ngoc-Dung Dao, Hamidreza Farmanbar, Xu Li, Kaveh Shafiee, Philippe Leroux
  • Publication number: 20140254495
    Abstract: The computational complexity of MCS adaptation for linear and non-linear MU-MIMO can be reduced by avoiding QR decomposition during subsequent stages of MCS adaptation. For instance, QR decomposition can be avoided in later stages of MCS adaptation by computing an instant upper right triangular matrix (R1) directly from an earlier upper right triangular matrix (R) and an earlier unitary matrix (U), which were obtained during a previous stage of MCS adaptation. As such, the instant upper right triangular matrix (R1) is obtained without performing QR decomposition on an instant Hermitian matrix (H1H), thereby allowing MCS adaptation to be performed for the new user group with less complexity. Additionally, computational complexity of MCS adaptation for linear MU-MIMO can be further reduced by avoiding matrix inversion during subsequent stages of MCS adaptation.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Hamidreza Farmanbar, Aaron Callard
  • Publication number: 20140233540
    Abstract: Method and apparatus for decoding a transmitted signal by a receiver in a MIMO system into a first estimate component for estimating a first signal, a first interference component indicating interference resulting from a correlation relationship among a set of signals to be transmitted, and a first noise component. A base station generates the transmitted signal from the set of signals through a coding process, the coding process defining a correlation relationship amongst the set of signals. The correlation information about the correlation relationship is transmitted to the receiver directly or by a dedicated reference symbol. The decoding is performed by determining a linear receiver filter for the first signal in accordance with the correlation information, and de-correlating the first signal and interferences.
    Type: Application
    Filed: April 25, 2014
    Publication date: August 21, 2014
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Hamidreza Farmanbar, Aaron Callard, Mohammadhadi Baligh
  • Publication number: 20140140451
    Abstract: Historical decoding in accordance with signal interference cancellation (SIC) or joint processing may reduce the amount of data that is re-transported across a network following an unsuccessful attempt to decode a data transmission. In one example, historical decoding is performed in accordance with interference cancellation by communicating information related to interfering data (rather than information related to serving data) following a served receiver's unsuccessful attempt to decode an interference signal. The information related to the interfering data may be the information bits carried by the earlier interfering data transmission or parity information (e.g., forward error correction (FEC) bits, etc.) related to the earlier interfering data transmission.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Aaron Callard, Hamidreza Farmanbar, Alex Stephenne, Ngoc-Dung Dao
  • Publication number: 20140140336
    Abstract: Historical decoding can be performed in accordance with pilot signal retransmission or control information retransmission to reduce the amount network resources consumed during data recovery. In one example, historical decoding is achieved through retransmitting a sub-set of coded bits carried by an earlier transmission, which are compared with a corresponding portion of the original signal (stored in memory) to obtain improved channel state information (CSI) relating to that earlier transmission. In another example, historical decoding is achieved through communicating parity information related to a sub-set of the coded bits carried by an earlier transmission, which are used in accordance with a data aided CSI technique to obtain the improved CSI relating to that earlier transmission. In yet another example, historical decoding is achieved by re-transmitting control information carried by an earlier transmission.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 22, 2014
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Aaron Callard, Hamidreza Farmanbar
  • Patent number: 8731028
    Abstract: Method and apparatus for decoding a transmitted signal by a receiver in a MIMO system into a first estimate component for estimating a first signal, a first interference component indicating interference resulting from a correlation relationship among a set of signals to be transmitted, and a first noise component. A base station generates the transmitted signal from the set of signals through a coding process, the coding process defining a correlation relationship amongst the set of signals. The correlation information about the correlation relationship is transmitted to the receiver directly or by a dedicated reference symbol. The decoding is performed by determining a linear receiver filter for the first signal in accordance with the correlation information, and de-correlating the first signal and interferences.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: May 20, 2014
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hamidreza Farmanbar, Aaron Callard, Mohammadhadi Baligh
  • Publication number: 20140029522
    Abstract: A system is provided for allocating downlink transmit power in a wireless multiple-input multiple-output (MIMO) system. During operation, the system identifies a set of receivers for receiving signals from one or more transmitters on a same time-frequency slot, receives channel state information (CSI) for communication channels between the identified receivers and the transmitters, and constructs a precoder based on the CSI. The system further derives a set of power-scale factors for the precoder based on a utility function associated with the identified receivers such that the power-scale factors optimize the utility function. A respective power-scale factor scales power transmitted to a corresponding receiver.
    Type: Application
    Filed: July 26, 2012
    Publication date: January 30, 2014
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Hamidreza Farmanbar, Mohammadhadi Baligh, Keyvan Zarifi
  • Publication number: 20130259156
    Abstract: Method and apparatus are provided for transmission of data. A precoder is selected, and a feedforward filter is derived in accordance with the precoder. In some embodiments, the precoder is an arbitrary effective precoder. Data prepared using the precoder and the feedforward filter can then be transmitted.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 3, 2013
    Applicant: FutureWei Technologies, Inc.
    Inventors: Mohammadhadi Baligh, Hamidreza Farmanbar
  • Publication number: 20130142290
    Abstract: Method and apparatus for decoding a transmitted signal by a receiver in a MIMO system into a first estimate component for estimating a first signal, a first interference component indicating interference resulting from a correlation relationship among a set of signals to be transmitted, and a first noise component. A base station generates the transmitted signal from the set of signals through a coding process, the coding process defining a correlation relationship amongst the set of signals. The correlation information about the correlation relationship is transmitted to the receiver directly or by a dedicated reference symbol. The decoding is performed by determining a linear receiver filter for the first signal in accordance with the correlation information, and de-correlating the first signal and interferences.
    Type: Application
    Filed: December 2, 2011
    Publication date: June 6, 2013
    Applicant: FutureWei Technologies, Inc.
    Inventors: Hamidreza Farmanbar, Aaron Callard, Mohammadhadi Baligh
  • Publication number: 20120044849
    Abstract: Techniques for power allocation among a plurality of network nodes in a communication network for cooperative downlink transmission to a mobile terminal are provided. Cooperative transmission to a mobile terminal is done in a selected one of a plurality of frequency bands allocated for cooperative downlink transmission, wherein each network node has a respective predetermined frequency band transmission power level for each of the plurality of frequency bands allocated for cooperative downlink transmission. Selection of the frequency band on which the mobile terminal will be cooperatively transmitted to is based on channel state information indicative of the channel between the mobile terminal and each of the network nodes and, for each of the frequency bands, the respective plurality of predetermined frequency band transmission power levels corresponding to the plurality of network nodes.
    Type: Application
    Filed: February 2, 2010
    Publication date: February 23, 2012
    Applicant: CIENA CORPORATION
    Inventors: Hamidreza Farmanbar, Amir Khandani, Mohammadhadi Baligh, Hosein Nikopourdeilami, Jianglei Ma