Patents by Inventor Abdelgader Legnain

Abdelgader Legnain 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: 9538392
    Abstract: Systems and methods for use in CDMA antenna systems are provided in which signals each having a common overhead component are transmitted on a set of adjacent beams of a sector with a micro-timing offset between signals transmitted on adjacent pairs of beams which is large enough that destructive cancellation substantially does not occur between the pair of beams.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: January 3, 2017
    Assignee: Apple Inc.
    Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
  • Publication number: 20150085950
    Abstract: Systems and methods for use in CDMA antenna systems are provided in which signals each having a common overhead component are transmitted on a set of adjacent beams of a sector with a micro-timing offset between signals transmitted on adjacent pairs of beams which is large enough that destructive cancellation substantially does not occur between the pair of beams.
    Type: Application
    Filed: March 17, 2014
    Publication date: March 26, 2015
    Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
  • Patent number: 8676267
    Abstract: Systems and methods for use in CDMA antenna systems are provided in which signals each having a common overhead component are transmitted on a set of adjacent beams of a sector with a micro-timing offset between signals transmitted on adjacent pairs of beams which is large enough that destructive cancellation substantially does not occur between the pair of beams.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: March 18, 2014
    Assignee: Apple Inc.
    Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
  • Patent number: 8599815
    Abstract: A method and apparatus for processing multiple signals at a common frequency combined into a single radio frequency cable and subsequently recovering the signals without significant losses, distortion, or cross-talk. The method and apparatus includes processing multiple signals at a common frequency fed through a single radio frequency (RF) cable with or without one or more amplifiers and utilized for either forward or reverse link transmissions. The invention enables a single power amplifier to amplify multiple RF signals that occupy a common frequency channel and after amplification splitting these signals into amplified copies of the originals. The amplified signals may be sent to different antenna ports to illuminate different base station sectors if required. The signal splitting function is performed at the antenna masthead such that this method reduces the number of feeder cables running up the antenna tower by a factor of N, where N is the number of common frequency signals (e.g.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: December 3, 2013
    Assignee: Apple Inc.
    Inventors: Peter Deane, Abdelgader Legnain, Neil McGowan, Marthinus Da Silveira
  • Publication number: 20130010834
    Abstract: Systems and methods for use in CDMA antenna systems are provided in which signals each having a common overhead component are transmitted on a set of adjacent beams of a sector with a micro-timing offset between signals transmitted on adjacent pairs of beams which is large enough that destructive cancellation substantially does not occur between the pair of beams.
    Type: Application
    Filed: July 9, 2012
    Publication date: January 10, 2013
    Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
  • Patent number: 8238977
    Abstract: Systems and methods for use in CDMA antenna systems are provided in which signals each having a common overhead component are transmitted on a set of adjacent beams of a sector with a micro-timing offset between signals transmitted on adjacent pairs of beams which is large enough that destructive cancellation substantially does not occur between the pair of beams.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: August 7, 2012
    Assignee: Apple Inc.
    Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGown
  • Publication number: 20110235683
    Abstract: Systems and methods for use in CDMA antenna systems are provided in which signals each having a common overhead component are transmitted on a set of adjacent beams of a sector with a micro-timing offset between signals transmitted on adjacent pairs of beams which is large enough that destructive cancellation substantially does not occur between the pair of beams.
    Type: Application
    Filed: May 26, 2011
    Publication date: September 29, 2011
    Applicant: Nortel Networks Limited
    Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
  • Patent number: 7953446
    Abstract: Systems and methods for use in CDMA antenna systems are provided in which signals each having a common overhead component are transmitted on a set of adjacent beams of a sector with a micro-timing offset between signals transmitted on adjacent pairs of beams which is large enough that destructive cancellation substantially does not occur between the pair of beams.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: May 31, 2011
    Assignee: Nortel Networks Limited
    Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
  • Publication number: 20100272089
    Abstract: A method and apparatus for processing multiple signals at a common frequency combined into a single radio frequency cable and subsequently recovering the signals without significant losses, distortion, or cross-talk. The method and apparatus includes processing multiple signals at a common frequency fed through a single radio frequency (RF) cable with or without one or more amplifiers and utilized for either forward or reverse link transmissions. The invention enables a single power amplifier to amplify multiple RF signals that occupy a common frequency channel and after amplification splitting these signals into amplified copies of the originals. The amplified signals may be sent to different antenna ports to illuminate different base station sectors if required. The signal splitting function is performed at the antenna masthead such that this method reduces the number of feeder cables running up the antenna tower by a factor of N, where N is the number of common frequency signals (e.g.
    Type: Application
    Filed: July 6, 2010
    Publication date: October 28, 2010
    Applicant: NORTEL NETWORKS LIMITED
    Inventors: Peter DEANE, Abdelgader LEGNAIN, Neil MCGOWAN, Marthinus DA SILVEIRA
  • Patent number: 7782827
    Abstract: A method and apparatus for processing multiple signals at a common frequency combined into a single radio frequency cable and subsequently recovering the signals without significant losses, distortion, or cross-talk. The method and apparatus includes processing multiple signals at a common frequency fed through a single radio frequency (RF) cable with or without one or more amplifiers and utilized for either forward or reverse link transmissions. The invention enables a single power amplifier to amplify multiple RF signals that occupy a common frequency channel and after amplification splitting these signals into amplified copies of the originals. The amplified signals may be sent to different antenna ports to illuminate different base station sectors if required. The signal splitting function is performed at the antenna masthead such that this method reduces the number of feeder cables running up the antenna tower by a factor of N, where N is the number of common frequency signals (e.g.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: August 24, 2010
    Assignee: Nortel Networks Limited
    Inventors: Peter Deane, Abdelgader Legnain, Neil McGowan, Marthinus Da Silveira
  • Patent number: 7649994
    Abstract: A method of decoding symbols in which a first codeword has been spread by a second codeword to recover first information and second information is provided. The decoding occurs jointly, with an overall output determining both the first and second information. A first parallel code multiplying operation for each codeword of the second code is followed by a second parallel code multiplying operation for the first code. An overall maximum output of the second parallel code multiplying operations determines the output information.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: January 19, 2010
    Assignee: Nortel Networks Limited
    Inventors: Abdelgader Legnain, Xixian Chen
  • Patent number: 7457641
    Abstract: A method and apparatus for transmitting wireless data to users which increases the wireless capacity for data transmissions within a sector served by a base station is disclosed. Accordingly, the sector is subdivided into a plurality of beams, typically by means of beam forming antennas, and the user data to be transmitted is time division multiplexed by scheduling the data into timeslots for transmission via the beams. Capacity is thus increased by decreasing network interference and/or transmitting data to more than one user at the same time by means of the multiple beams, and time division multiplexing the data. Preferably multiple users can be scheduled on multiple beams simultaneously in order to increase capacity. Preferably the same user can be allocated more than one beam if the radio conditions warrant. Such a system is optimized for data and carries out the following steps: a. Evaluating the reverse link wireless conditions for each user; b.
    Type: Grant
    Filed: November 25, 2005
    Date of Patent: November 25, 2008
    Assignee: Nortel Networks Limited
    Inventors: Abdelgader Legnain, Peter Deane, Neil McGowan
  • Patent number: 7424039
    Abstract: A method and apparatus for processing multiple signals at a common frequency fed through a single radio frequency (RF) cable with or without one or more amplifiers and utilized for either forward or reverse link transmissions. The invention enables a single power amplifier to amplify multiple RF signals that occupy a common frequency channel and after amplification splitting these signals into amplified copies of the originals. The amplified signals may be sent to different antenna ports to illuminate different base station sectors if required. The signal splitting function is performed at the antenna masthead such that this method reduces the number of feeder cables running up the antenna tower by a factor of N, where N is the number of common frequency signals (e.g., the number of sectors) amplified by the single power amplifier.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: September 9, 2008
    Assignee: Nortel Networks Limited
    Inventors: Peter Deane, Abdelgader Legnain, Marthinus Da Silveira, Neil McGowan
  • Publication number: 20040190479
    Abstract: A method and apparatus for processing multiple signals at a common frequency combined into a single radio frequency cable and subsequently recovering the signals without significant losses, distortion, or cross-talk. The method and apparatus includes processing multiple signals at a common frequency fed through a single radio frequency (RF) cable with or without one or more amplifiers and utilized for either forward or reverse link transmissions. The invention enables a single power amplifier to amplify multiple RF signals that occupy a common frequency channel and after amplification splitting these signals into amplified copies of the originals. The amplified signals may be sent to different antenna ports to illuminate different base station sectors if required. The signal splitting function is performed at the antenna masthead such that this method reduces the number of feeder cables running up the antenna tower by a factor of N, where N is the number of common frequency signals (e.g.
    Type: Application
    Filed: August 19, 2003
    Publication date: September 30, 2004
    Inventors: Peter Deane, Abdelgader Legnain, Neil McGowan, Marthinus Da Silveira
  • Publication number: 20040092291
    Abstract: Systems and methods for use in CDMA antenna systems are provided in which signals each having a common overhead component are transmitted on a set of adjacent beams of a sector with a micro-timing offset between signals transmitted on adjacent pairs of beams which is large enough that destructive cancellation substantially does not occur between the pair of beams.
    Type: Application
    Filed: November 3, 2003
    Publication date: May 13, 2004
    Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan