Patents by Inventor Apostolos Papathanasiou

Apostolos Papathanasiou 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: 7450674
    Abstract: Systems and methods for processing received signals are disclosed and may include determining, for each block of data in a received frame, diversity combining weight vectors based on a channel estimate and a correlation matrix of an unwanted signal. For each sample in each of the block of data in the received frame, a corresponding one of the diversity combining weight vectors may be applied to extract a corresponding logic level. For the each block of the data in the received frame, a new correlation matrix of the unwanted signal may be generated based on the extracted corresponding logic level and the channel estimate, to process the received frame. The received signals may include a sequence of information data blocks, and each data block may include a plurality of samples. Each of the received signals may include an orthogonal frequency division multiplexing (OFDM) symbol and/or a multicarrier modulated symbol.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: November 11, 2008
    Assignee: Broadcom Corporation
    Inventors: Apostolos Papathanasiou, Emmanuel Frantzeskakis, Aristidis Posonidis, Konstantinos Aretos
  • Publication number: 20080037691
    Abstract: Systems and methods for processing received signals are disclosed and may include determining, for each block of data in a received frame, diversity combining weight vectors based on a channel estimate and a correlation matrix of an unwanted signal. For each sample in each of the block of data in the received frame, a corresponding one of the diversity combining weight vectors may be applied to extract a corresponding logic level. For the each block of the data in the received frame, a new correlation matrix of the unwanted signal may be generated based on the extracted corresponding logic level and the channel estimate, to process the received frame. The received signals may include a sequence of information data blocks, and each data block may include a plurality of samples. Each of the received signals may include an orthogonal frequency division multiplexing (OFDM) symbol and/or a multicarrier modulated symbol.
    Type: Application
    Filed: October 19, 2007
    Publication date: February 14, 2008
    Inventors: Apostolos Papathanasiou, Emmanuel Frantzeskakis, Aristidis Posonidis, Konstantinos Aretos
  • Patent number: 7295637
    Abstract: A method and apparatus for controlling an antenna array for wireless communication are described. The method uses the statistical characteristics of the received signal noise in controlling the antenna array in order to achieve directional reception in a wireless communication system and suppress co-channel interference. Furthermore, the method can be used to power space-division multiple access and can be used in conjunction with multi-carrier modulation signaling.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: November 13, 2007
    Assignee: Broadcom Corporation
    Inventors: Apostolos Papathanasiou, Emmanuel Frantzeskakis, Aristidis Posonidis, Konstantinos Aretos
  • Publication number: 20050074071
    Abstract: A method and apparatus for controlling an antenna array for wireless communication are described. The method uses the statistical characteristics of the received signal noise in controlling the antenna array in order to achieve directional reception in a wireless communication system and suppress co-channel interference. Furthermore, the method can be used to power space-division multiple access and can be used in conjunction with multi-carrier modulation signaling.
    Type: Application
    Filed: November 4, 2002
    Publication date: April 7, 2005
    Inventors: Apostolos Papathanasiou, Emmanuel Frantzeskakis, Aristidis Posonidis, Konstantinos Aretos