Patents by Inventor Paulraj Arogyaswami

Paulraj Arogyaswami 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).

  • Publication number: 20150245370
    Abstract: The present disclosure is directed to a system and method for selecting a sub-group of user terminals (UTs) among a group of UTs served by a sector of a cellular network to schedule independent data streams for transmission to over the same time-frequency interval. In one embodiment, the sub-group of UTs is selected to limit inter-user interference among the sub-group of UTs. In another embodiment, the sub-group of UTs is selected to limit inter-user interference experienced by a UT that is at or near the boundary of the sector that serves the sub-group of UTs.
    Type: Application
    Filed: March 10, 2014
    Publication date: August 27, 2015
    Applicant: Broadcom Corporation
    Inventor: Paulraj AROGYASWAMI
  • Publication number: 20150245371
    Abstract: The present disclosure is directed to a system and method for selecting a sub-group of user terminals (UTs) among a group of UTs served by a sector of a cellular network to schedule independent data streams for transmission to over the same time-frequency interval. In one embodiment, the sub-group of UTs is selected to limit inter-user interference among the sub-group of UTs. In another embodiment, the sub-group of UTs is selected to limit inter-user interference experienced by a UT that is at or near the boundary of the sector that serves the sub-group of UTs.
    Type: Application
    Filed: March 10, 2014
    Publication date: August 27, 2015
    Applicant: Broadcom Corporation
    Inventors: Nihar JINDAL, Murat MESE, Paulraj AROGYASWAMI
  • Patent number: 9107077
    Abstract: Embodiments of a method and system for supporting co-existence of first and second cellular networks in adjacent channels in the same geographical area are provided. The method and system synchronize the two cellular networks such that their respective uplink transmissions are aligned in time and their respective downlink transmissions are aligned in time. Such synchronization prevents (or substantially prevents) the uplink transmissions from one of the two cellular networks from overlapping with the downlink transmissions of the other cellular network, and vice versa, thereby mitigating interference between the two networks.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: August 11, 2015
    Assignee: Broadcom Corporation
    Inventors: Djordje Tujkovic, Louay Jalloul, Paulraj Arogyaswami
  • Publication number: 20140307704
    Abstract: The present disclosure is directed to a system and method for determining an EIRP constraint for a data stream based on the direction that a beam carrying the data stream is to be radiated by an array of antennas rather than using a fixed EIRP constraint for all such beams. The system and method can use the direction the beam is to be radiated to determine a distance between the array of antennas and the closest point (or location) in which a human being can potentially be impacted by the radiated beam. For larger distances, the EIRP constraint can be adjusted upward, allowing for higher transmit power levels. Conversely, for comparatively smaller distances, the EIRP constraint can be adjusted downward, allowing for lower transmit power levels.
    Type: Application
    Filed: April 10, 2014
    Publication date: October 16, 2014
    Applicant: Broadcom Corporation
    Inventor: Paulraj AROGYASWAMI
  • Publication number: 20120020256
    Abstract: Embodiments of a method and system for supporting co-existence of first and second cellular networks in adjacent channels in the same geographical area are provided. The method and system synchronize the two cellular networks such that their respective uplink transmissions are aligned in time and their respective downlink transmissions are aligned in time. Such synchronization prevents (or substantially prevents) the uplink transmissions from one of the two cellular networks from overlapping with the downlink transmissions of the other cellular network, and vice versa, thereby mitigating interference between the two networks.
    Type: Application
    Filed: July 22, 2011
    Publication date: January 26, 2012
    Applicant: Broadcom Corporation
    Inventors: Djordje TUJKOVIC, Louay Jalloul, Paulraj Arogyaswami
  • Patent number: 7656786
    Abstract: A computationally efficient pulse shaping method for OFDM that produces mutually orthogonal transmission pulses having fast spectral decay is provided. The pulse shaping method comprises an iterative method for designing OFDM transmission pulses that satisfy prescribed time-frequency localization conditions. The iterative method may be implemented in a computationally efficient way and can be used to adapt the transmission pulses to time-varying channel conditions in real-time, thereby maximizing the bit-error performance of an OFDM system while maintaining high data rates in wireless transmission.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: February 2, 2010
    Assignees: The Board of Trustees of the Leland Stanford Junior University, The Regents of the University of California
    Inventors: Thomas Strohmer, Paulraj Arogyaswami
  • Publication number: 20060039270
    Abstract: A computationally efficient pulse shaping method for OFDM that produces mutually orthogonal transmission pulses having fast spectral decay is provided. The pulse shaping method comprises an iterative method for designing OFDM transmission pulses that satisfy prescribed time-frequency localization conditions. The iterative method may be implemented in a computationally efficient way and can be used to adapt the transmission pulses to time-varying channel conditions in real-time, thereby maximizing the bit-error performance of an OFDM system while maintaining high data rates in wireless transmission.
    Type: Application
    Filed: June 28, 2005
    Publication date: February 23, 2006
    Inventors: Thomas Strohmer, Paulraj Arogyaswami