Patents by Inventor Martin Vivian Clark

Martin Vivian Clark 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: 7912014
    Abstract: Interference is reduced with a multiple-input-multiple-output (MIMO) system having a set of basestations including a first basestation and a second basestation is reduced. Signals associated with the first basestation having its own antenna elements are received. The first basestation is associated with its own mobile stations each having their own antenna elements. Each signal associated with the first basestation is uniquely associated with a mobile station associated with the first basestation. Signals associated with the second basestation having its own antenna elements are received. The second basestation is associated with its own mobile stations each having their own antenna elements. Each signal associated with the second basestation is uniquely associated with a mobile station associated with the second basestation. Signals associated with the first basestation are jointly detected in conjunction with the signals associated with the second basestation to produce a set of detected signals.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: March 22, 2011
    Inventors: Andreas Molisch, Martin Vivian Clark, Huaiyu Dai, Moe Z. Win, Jack Harriman Winters
  • Patent number: 7894781
    Abstract: Multiple-input/multiple-output (MIMO) antenna technology is used in a point-to-point radio link to provide higher data rates than would otherwise be achievable in a similar system that did not use MIMO antenna technology. Particular embodiments of the invention implement channel coding, dual polarization, adaptive receiver combining and adaptive power control.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: February 22, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Martin Vivian Clark, Thomas Edward Darcie, Lawrence Joel Greenstein, Carol Catalano Martin, Thomas M. Willis, III
  • Patent number: 7620375
    Abstract: Multiple-input/multiple-output (MIMO) antenna technology is used in a point-to-point radio link to provide higher data rates than would otherwise be achievable in a similar system that did not use MIMO antenna technology. Particular embodiments of the invention implement channel coding, dual polarization, adaptive receiver combining and adaptive power control.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: November 17, 2009
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Martin Vivian Clark, Thomas Edward Darcie, Lawrence Joel Greenstein, Carol Catalano Martin, Thomas M. Willis, III
  • Patent number: 7418035
    Abstract: The feedback structure of a frequency domain decision feedback equalizer is implemented in the frequency domain, rather than in the time domain. Advantageously, this permits the synthesis of long feedback filters with a much smaller increase in receiver complexity than is the case when the feedback structure is illustratively implemented in the time domain. Adaptation of the characteristics of the feedback structure of the frequency domain equalizer (as well as its feedforward structure) is carried out based on tentative symbol decisions that are fed back on a block basis. Although possibly rendering the receiver more susceptible to channel estimation errors, this approach renders the receiver capable not only of the post-cursor intersymbol interference cancellation afforded by a standard DFE, but pre-cursor intersymbol interference cancellation, as well, helping to offset any impact of increased channel estimation errors.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: August 26, 2008
    Assignee: AT&T Corp.
    Inventor: Martin Vivian Clark
  • Patent number: 7212569
    Abstract: The feedback structure of a frequency domain decision feedback equalizer is implemented in the frequency domain, rather than in the time domain. Advantageously, this permits the synthesis of long feedback filters with a much smaller increase in receiver complexity than is the case when the feedback structure is illustratively implemented in the time domain. Adaptation of the characteristics of the feedback structure of the frequency domain equalizer (as well as its feedforward structure) is carried out based on tentative symbol decisions that are fed back on a block basis. Although possibly rendering the receiver more susceptible to channel estimation errors, this approach renders the receiver capable not only of the post-cursor intersymbol interference cancellation afforded by a standard DFE, but pre-cursor intersymbol interference cancellation, as well, helping to offset any impact of increased channel estimation errors.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: May 1, 2007
    Assignee: AT&T Corp.
    Inventor: Martin Vivian Clark
  • Patent number: 7006804
    Abstract: Multiple-input/multiple-output (MIMO) antenna technology is used in a point-to-point radio link to provide higher data rates than would otherwise be achievable in a similar system that did not use MIMO antenna technology. Particular embodiments of the invention implement channel coding, dual polarization, adaptive receiver combining and adaptive power control.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: February 28, 2006
    Assignee: AT&T Corp.
    Inventors: Martin Vivian Clark, Thomas Edward Darcie, Lawrence Joel Greenstein, Carol Catalano Martin, Thomas M. Willis, III
  • Publication number: 20030214917
    Abstract: Interference is reduced with a multiple-input-multiple-output (MIMO) system having a set of basestations including a first basestation and a second basestation is reduced. Signals associated with the first basestation having its own antenna elements are received. The first basestation is associated with its own mobile stations each having their own antenna elements. Each signal associated with the first basestation is uniquely associated with a mobile station associated with the first basestation. Signals associated with the second basestation having its own antenna elements are received. The second basestation is associated with its own mobile stations each having their own antenna elements. Each signal associated with the second basestation is uniquely associated with a mobile station associated with the second basestation. Signals associated with the first basestation are jointly detected in conjunction with the signals associated with the second basestation to produce a set of detected signals.
    Type: Application
    Filed: September 26, 2002
    Publication date: November 20, 2003
    Applicant: AT&T Corp.
    Inventors: Andreas Molisch, Martin Vivian Clark, Huaiyu Dai, Moe Z. Win, Jack Harriman Winters