Patents by Inventor Alex Spiridon

Alex Spiridon 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: 8188841
    Abstract: A new Radio Frequency Identification (RFID), tracking, powering apparatus/system and method using coded Ultra-wideband (UWB) signaling is introduced. The proposed hardware and techniques disclosed herein utilize a plurality of passive UWB transponders in a field of an RFID-radar system. The radar system itself enables multiple passive tags to be remotely powered (activated) at about the same time frame via predetermined frequency UWB pulsed formats. Once such tags are in an activated state, an UWB radar transmits specific “interrogating codes” to put predetermined tags in an awakened status. Such predetermined tags can then communicate by a unique “response code” so as to be detected by an UWB system using radar methods.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: May 29, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Farid U. Dowla, Faranak Nekoogar, David M. Benzel, Gregory E. Dallum, Alex Spiridon
  • Patent number: 7970047
    Abstract: The present invention presents a simple and novel channel estimation scheme for UWB communication systems. As disclosed herein, the present invention maximizes the extraction of information by incorporating a new generation of transmitted-reference (Tr) transceivers that utilize a single reference pulse(s) or a preamble of reference pulses to provide improved channel estimation while offering higher Bit Error Rate (BER) performance and data rates without diluting the transmitter power.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: June 28, 2011
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Faranak Nekoogar, Farid U. Dowla, Alex Spiridon, Peter C. Haugen, Dave M. Benzel
  • Patent number: 7548576
    Abstract: A novel UWB communications method and system that provides self-organization for wireless sensor networks is introduced. The self-organization is in terms of scalability, power conservation, channel estimation, and node synchronization in wireless sensor networks. The UWB receiver in the present invention adds two new tasks to conventional TR receivers. The two additional units are SNR enhancing unit and timing acquisition and tracking unit.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: June 16, 2009
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Farid U. Dowla, Franak Nekoogar, Alex Spiridon
  • Publication number: 20080252422
    Abstract: A new Radio Frequency Identification (RFID), tracking, powering apparatus/system and method using coded Ultra-wideband (UWB) signaling is introduced. The proposed hardware and techniques disclosed herein utilize a plurality of passive UWB transponders in a field of an RFID-radar system. The radar system itself enables multiple passive tags to be remotely powered (activated) at about the same time frame via predetermined frequency UWB pulsed formats. Once such tags are in an activated state, an UWB radar transmits specific “interrogating codes” to put predetermined tags in an awakened status. Such predetermined tags can then communicate by a unique “response code” so as to be detected by an UWB system using radar methods.
    Type: Application
    Filed: August 31, 2007
    Publication date: October 16, 2008
    Inventors: Farid U. Dowla, Faranak Nekoogar, David M. Benzel, Gregory E. Dallum, Alex Spiridon
  • Publication number: 20080159357
    Abstract: The present invention presents a simple and novel channel estimation scheme for UWB communication systems. As disclosed herein, the present invention maximizes the extraction of information by incorporating a new generation of transmitted-reference (Tr) transceivers that utilize a single reference pulse(s) or a preamble of reference pulses to provide improved channel estimation while offering higher Bit Error Rate (BER) performance and data rates without diluting the transmitter power.
    Type: Application
    Filed: December 27, 2006
    Publication date: July 3, 2008
    Inventors: Faranak Nekoogar, Farid U. Dowla, Alex Spiridon, Peter C. Haugen, Dave M. Benzel
  • Publication number: 20070297543
    Abstract: A novel technique and structure that maximizes the extraction of information from reference pulses for UWB-TR receivers is introduced. The scheme efficiently processes an incoming signal to suppress different types of UWB as well as non-UWB interference prior to signal detection. Such a method and system adds a feedback loop mechanism to enhance the signal-to-noise ratio of reference pulses in a conventional TR receiver. Moreover, sampling the second order statistical function such as, for example, the autocorrelation function (ACF) of the received signal and matching it to the ACF samples of the original pulses for each transmitted bit provides a more robust UWB communications method and system in the presence of channel distortions.
    Type: Application
    Filed: July 30, 2007
    Publication date: December 27, 2007
    Inventors: Alex Spiridon, Dave Benzel, Farid Dowla, Faranak Nekoogar, Erwin Rosenbury
  • Patent number: 7305052
    Abstract: A novel technique and structure that maximizes the extraction of information from reference pulses for UWB-TR receivers is introduced. The scheme efficiently processes an incoming signal to suppress different types of UWB as well as non-UWB interference prior to signal detection. Such a method and system adds a feedback loop mechanism to enhance the signal-to-noise ratio of reference pulses in a conventional TR receiver. Moreover, sampling the second order statistical function such as, for example, the autocorrelation function (ACF) of the received signal and matching it to the ACF samples of the original pulses for each transmitted bit provides a more robust UWB communications method and system in the presence of channel distortions.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: December 4, 2007
    Assignee: The Regents of the University of California
    Inventors: Alex Spiridon, Dave Benzel, Farid U. Dowla, Faranak Nekoogar, Erwin T. Rosenbury
  • Publication number: 20050286610
    Abstract: A novel UWB communications method and system that provides self-organization for wireless sensor networks is introduced. The self-organization is in terms of scalability, power conservation, channel estimation, and node synchronization in wireless sensor networks. The UWB receiver in the present invention adds two new tasks to conventional TR receivers. The two additional units are SNR enhancing unit and timing acquisition and tracking unit.
    Type: Application
    Filed: June 24, 2005
    Publication date: December 29, 2005
    Inventors: Farid Dowla, Faranak Nekoogar, Alex Spiridon
  • Publication number: 20040242155
    Abstract: A novel technique and structure that maximizes the extraction of information from reference pulses for UWB-TR receivers is introduced. The scheme efficiently processes an incoming signal to suppress different types of UWB as well as non-UWB interference prior to signal detection. Such a method and system adds a feedback loop mechanism to enhance the signal-to-noise ratio of reference pulses in a conventional TR receiver. Moreover, sampling the second order statistical function such as, for example, the autocorrelation function (ACF) of the received signal and matching it to the ACF samples of the original pulses for each transmitted bit provides a more robust UWB communications method and system in the presence of channel distortions.
    Type: Application
    Filed: March 31, 2004
    Publication date: December 2, 2004
    Applicant: The Regents of the University of California
    Inventors: Alex Spiridon, Dave Benzel, Farid U. Dowla, Faranak Nekoogar, Erwin T. Rosenbury