Patents by Inventor Samet Oymak

Samet Oymak 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).

  • Low-complexity precoder design for large-scale MIMO communication systems
    Patent number: 9450657
    Abstract: A method and system are provided. The method includes providing transmit precoders for a multiple-input and multiple-output communication system having a plurality of transmit antennas. The plurality of transmit antennas are for forming, using precoding, a plurality of channels such that each of the plurality of channels are configurable to serve a respective one of a plurality of users. The providing step includes imposing a respective average transmit antenna power constraint on each of the plurality of transmit antennas. The providing step further includes determining a diagonal precoder responsive to applying column scaling to a downlink channel matrix having a plurality of rows and a plurality of columns. The providing step additionally includes generating, from the diagonal precoder, a weighted precoder in accordance with the respective average antenna power constraint by optimizing a weighted sum-rate obtained upon transmitting respective signals over the plurality of channels.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: September 20, 2016
    Assignee: NEC Corporation
    Inventors: Guosen Yue, Narayan Prasad, Sampath Rangarajan, Samet Oymak
  • LOW-COMPLEXITY PRECODER DESIGN FOR LARGE-SCALE MIMO COMMUNICATION SYSTEMS
    Publication number: 20150063254
    Abstract: A method and system are provided. The method includes providing transmit precoders for a multiple-input and multiple-output communication system having a plurality of transmit antennas. The plurality of transmit antennas are for forming, using precoding, a plurality of channels such that each of the plurality of channels are configurable to serve a respective one of a plurality of users. The providing step includes imposing a respective average transmit antenna power constraint on each of the plurality of transmit antennas. The providing step further includes determining a diagonal precoder responsive to applying column scaling to a downlink channel matrix having a plurality of rows and a plurality of columns. The providing step additionally includes generating, from the diagonal precoder, a weighted precoder in accordance with the respective average antenna power constraint by optimizing a weighted sum-rate obtained upon transmitting respective signals over the plurality of channels.
    Type: Application
    Filed: August 21, 2014
    Publication date: March 5, 2015
    Inventors: Guosen Yue, Narayan Prasad, Sampath Rangarajan, Samet Oymak