Patents by Inventor Diakoumis Gerakoulis

Diakoumis Gerakoulis 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: 9100260
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: August 4, 2015
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Diakoumis Gerakoulis
  • Publication number: 20140219322
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
    Type: Application
    Filed: April 8, 2014
    Publication date: August 7, 2014
    Applicant: AT&T Intellectual Property II, L.P.
    Inventor: DIAKOUMIS GERAKOULIS
  • Patent number: 8711674
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: April 29, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Diakoumis Gerakoulis
  • Patent number: 8358574
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: January 22, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Diakoumis Gerakoulis
  • Publication number: 20110243195
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of PIS converters.
    Type: Application
    Filed: May 6, 2011
    Publication date: October 6, 2011
    Inventor: Diakoumis Gerakoulis
  • Patent number: 7940639
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: May 10, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Diakoumis Gerakoulis
  • Patent number: 7738358
    Abstract: A method for operating an IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises the steps of producing and transmitting an IS-OFDM signal including the use of parallel-to-serial converters in order to maintain the same data rate for the transmission as the input data rate. The method further comprises the steps of receiving and recovering an IS-OFDM signal.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: June 15, 2010
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Diakoumis Gerakoulis
  • Publication number: 20100080267
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
    Type: Application
    Filed: December 4, 2009
    Publication date: April 1, 2010
    Inventor: Diakoumis Gerakoulis
  • Patent number: 7630290
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: December 8, 2009
    Assignee: AT&T Corp.
    Inventor: Diakoumis Gerakoulis
  • Patent number: 7158474
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmited signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: January 2, 2007
    Assignee: AT&T Corp.
    Inventor: Diakoumis Gerakoulis
  • Patent number: 7133355
    Abstract: A method for operating an IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises the steps of producing and transmitting an IS-OFDM signal including the use of parallel-to-serial converters in order to maintain the same data rate for the transmission as the input data rate. The method further comprises the steps of receiving and recovering an IS-OFDM signal.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: November 7, 2006
    Assignee: AT&T Corp.
    Inventor: Diakoumis Gerakoulis
  • Publication number: 20050163066
    Abstract: A method is provided for code division switching at a destination access radio port of a terrestrial wireless network, in which the access radio port interfaces with a group of terminal users located within one or more microport cells. A preamble, which has a PN-code, is acquired. The PN-code is processed to insure synchronization. An acknowledgment is sent. Payload data is received.
    Type: Application
    Filed: March 4, 2005
    Publication date: July 28, 2005
    Applicant: AT&T Corp.
    Inventor: Diakoumis Gerakoulis
  • Publication number: 20050157692
    Abstract: An access radio port is provided that includes means for spreading a payload data signal, extracted from an ATM packet, with a uniquely assigned orthogonal code, means for transmitting the spread payload data signal to one of a group of mobile subscriber terminals located within a microport cell of a wireless terrestrial network, and means for releasing the uniquely assigned orthogonal code. In another aspect, a mobile subscriber terminal, configured to be located within a microport cell of a terrestrial wireless network that interfaces with an access radio port, is provided. The mobile subscriber terminal includes means for receiving an assignment of a unique orthogonal code, means for spreading a payload data signal by the unique orthogonal code, means for modulating and forwarding the spread payload data signal to the access radio port, and means for releasing the assignment of the unique orthogonal code.
    Type: Application
    Filed: February 4, 2005
    Publication date: July 21, 2005
    Applicant: AT&T Corp.
    Inventor: Diakoumis Gerakoulis
  • Patent number: 6882619
    Abstract: A method for operating an IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises the steps of producing and transmitting an IS-OFDM signal including the use of parallel-to-serial converters in order to maintain the same data rate for the transmission as the input data rate. The method further comprises the steps of receiving and recovering an IS-OFDM signal.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: April 19, 2005
    Assignee: AT&T Corp.
    Inventor: Diakoumis Gerakoulis
  • Publication number: 20050013240
    Abstract: The invention provides an apparatus and method for generating overspread orthogonal codes. Overspread orthogonal codes are generated code-multiplying orthogonal codes generated by any method and the overspread orthogonal code length is the product of the code lengths of the orthogonal codes that were code-multiplied. In a telecommunication application, for example, a communication signal is first spread by a first orthogonal code and then overspread by a second orthogonal code. The output of the overspreading process may be further overspread by a third orthogonal code and so on until a desired code length is obtained. Thus, orthogonal code lengths unobtainable by any of the known orthogonal code generators may be generated by overspreading using codes generated by any orthogonal code generator(s) to obtain a desired code length.
    Type: Application
    Filed: February 26, 2004
    Publication date: January 20, 2005
    Inventors: Diakoumis Gerakoulis, Saeed Ghassemzadeh