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).
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Patent number: 9538392Abstract: 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: GrantFiled: March 17, 2014Date of Patent: January 3, 2017Assignee: Apple Inc.Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
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Publication number: 20150085950Abstract: 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: ApplicationFiled: March 17, 2014Publication date: March 26, 2015Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
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Patent number: 8676267Abstract: 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: GrantFiled: July 9, 2012Date of Patent: March 18, 2014Assignee: Apple Inc.Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
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Patent number: 8599815Abstract: 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: GrantFiled: July 6, 2010Date of Patent: December 3, 2013Assignee: Apple Inc.Inventors: Peter Deane, Abdelgader Legnain, Neil McGowan, Marthinus Da Silveira
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Publication number: 20130010834Abstract: 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: ApplicationFiled: July 9, 2012Publication date: January 10, 2013Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
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Patent number: 8238977Abstract: 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: GrantFiled: May 26, 2011Date of Patent: August 7, 2012Assignee: Apple Inc.Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGown
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Publication number: 20110235683Abstract: 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: ApplicationFiled: May 26, 2011Publication date: September 29, 2011Applicant: Nortel Networks LimitedInventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
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Patent number: 7953446Abstract: 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: GrantFiled: November 3, 2003Date of Patent: May 31, 2011Assignee: Nortel Networks LimitedInventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan
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Publication number: 20100272089Abstract: 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: ApplicationFiled: July 6, 2010Publication date: October 28, 2010Applicant: NORTEL NETWORKS LIMITEDInventors: Peter DEANE, Abdelgader LEGNAIN, Neil MCGOWAN, Marthinus DA SILVEIRA
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Patent number: 7782827Abstract: 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: GrantFiled: August 19, 2003Date of Patent: August 24, 2010Assignee: Nortel Networks LimitedInventors: Peter Deane, Abdelgader Legnain, Neil McGowan, Marthinus Da Silveira
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Patent number: 7649994Abstract: 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: GrantFiled: October 31, 2003Date of Patent: January 19, 2010Assignee: Nortel Networks LimitedInventors: Abdelgader Legnain, Xixian Chen
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Patent number: 7457641Abstract: 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: GrantFiled: November 25, 2005Date of Patent: November 25, 2008Assignee: Nortel Networks LimitedInventors: Abdelgader Legnain, Peter Deane, Neil McGowan
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Patent number: 7424039Abstract: 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: GrantFiled: August 19, 2003Date of Patent: September 9, 2008Assignee: Nortel Networks LimitedInventors: Peter Deane, Abdelgader Legnain, Marthinus Da Silveira, Neil McGowan
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Publication number: 20040190479Abstract: 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: ApplicationFiled: August 19, 2003Publication date: September 30, 2004Inventors: Peter Deane, Abdelgader Legnain, Neil McGowan, Marthinus Da Silveira
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Publication number: 20040092291Abstract: 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: ApplicationFiled: November 3, 2003Publication date: May 13, 2004Inventors: Abdelgader Legnain, Peter Deane, Neil M. McGowan