Patents by Inventor Farzaneh Kohandani

Farzaneh Kohandani 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).

  • Code books for multiple-input and multiple-output communication systems
    Patent number: 8594220
    Abstract: A method and device for transmitting and receiving data. A device comprises a code book and a transmitter. The code book comprises a plurality of codewords, wherein the plurality of codewords correspond to a plurality of vectors having a largest minimum chordal distance with respect to the plurality of vectors. The transmitter is configured to send a number of wireless signals using the code book. A receiver receives and decodes the number of wireless signals.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: November 26, 2013
    Assignee: Research In Motion Limited
    Inventors: Alireza Bayesteh, Farzaneh Kohandani, Yongkang Jia
  • Apparatus, and associated method, for communicating a data block in a multi carrier modulation communication scheme
    Patent number: 8503557
    Abstract: Apparatus, and an associated method, for sending a data block in an OFDM, or other MCM, communication system with reduced PAPR is provided. The data block is combined with a random scrambling sequence. An IDFT operation is performed upon the combined sequence, and its PAPR, peak-to-average power ratio, is calculated. The PAPR is compared against a threshold. If the PAPR is smaller than a threshold, the transformed, combination sequence is transmitted. Otherwise, a different scrambling sequence, if available, is used to form a new combination sequence, and the process iterates until either a PAPR smaller than the threshold is obtained, or a pre-defined maximum number of iterations is reached. If the maximum number of iterations is reached and no combination sequence is created that leads to an acceptable PAPR, then the transformed, combination sequence that exhibits the smallest PAPR level is selected for transmission.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: August 6, 2013
    Assignee: Research In Motion Limited
    Inventors: Shouxing Qu, Farzaneh Kohandani
  • APPARATUS, AND ASSOCIATED METHOD, FOR COMMUNICATING A DATA BLOCK IN A MULTI CARRIER MODULATION COMMUNICATION SCHEME
    Publication number: 20120257663
    Abstract: Apparatus, and an associated method, for sending a data block in an OFDM, or other MCM, communication system with reduced PAPR is provided. The data block is combined with a random scrambling sequence. An IDFT operation is performed upon the combined sequence, and its PAPR, peak-to-average power ratio, is calculated. The PAPR is compared against a threshold. If the PAPR is smaller than a threshold, the transformed, combination sequence is transmitted. Otherwise, a different scrambling sequence, if available, is used to form a new combination sequence, and the process iterates until either a PAPR smaller than the threshold is obtained, or a pre-defined maximum number of iterations is reached. If the maximum number of iterations is reached and no combination sequence is created that leads to an acceptable PAPR, then the transformed, combination sequence that exhibits the smallest PAPR level is selected for transmission.
    Type: Application
    Filed: June 18, 2012
    Publication date: October 11, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Shouxing Qu, Farzaneh Kohandani
  • Apparatus, and associated method, for communicating a data block in a multi carrier modulation communication scheme
    Patent number: 8223866
    Abstract: Apparatus, and an associated method, for sending a data block in an OFDM, or other MCM, communication system with reduced PAPR is provided. The data block is combined with a random scrambling sequence. An IDFT operation is performed upon the combined sequence, and its PAPR, peak-to-average power ratio, is calculated. The PAPR is compared against a threshold. If the PAPR is smaller than a threshold, the transformed, combination sequence is transmitted. Otherwise, a different scrambling sequence, if available, is used to form a new combination sequence, and the process iterates until either a PAPR smaller than the threshold is obtained, or a pre-defined maximum number of iterations is reached. If the maximum number of iterations is reached and no combination sequence is created that leads to an acceptable PAPR, then the transformed, combination sequence that exhibits the smallest PAPR level is selected for transmission.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: July 17, 2012
    Assignee: Research In Motion Limited
    Inventors: Shouxing Qu, Farzaneh Kohandani
  • APPARATUS, AND ASSOCIATED METHOD, FOR COMMUNICATING A DATA BLOCK IN A MULTI CARRIER MODULATION COMMUNICATION SCHEME
    Publication number: 20110182342
    Abstract: Apparatus, and an associated method, for sending a data block in an OFDM, or other MCM, communication system with reduced PAPR is provided. The data block is combined with a random scrambling sequence. An IDFT operation is performed upon the combined sequence, and its PAPR, peak-to-average power ratio, is calculated. The PAPR is compared against a threshold. If the PAPR is smaller than a threshold, the transformed, combination sequence is transmitted. Otherwise, a different scrambling sequence, if available, is used to form a new combination sequence, and the process iterates until either a PAPR smaller than the threshold is obtained, or a pre-defined maximum number of iterations is reached. If the maximum number of iterations is reached and no combination sequence is created that leads to an acceptable PAPR, then the transformed, combination sequence that exhibits the smallest PAPR level is selected for transmission.
    Type: Application
    Filed: April 7, 2011
    Publication date: July 28, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Shouxing Qu, Farzaneh Kohandani
  • Apparatus, and associated method, for communicating a data block in a multi carrier modulation communication scheme
    Patent number: 7944980
    Abstract: Apparatus, and an associated method, for sending a data block in an OFDM, or other MCM, communication system with reduced PAPR is provided. The data block is combined with a random scrambling sequence. An IDFT operation is performed upon the combined sequence, and its PAPR, peak-to-average power ratio, is calculated. The PAPR is compared against a threshold. If the PAPR is smaller than a threshold, the transformed, combination sequence is transmitted. Otherwise, a different scrambling sequence, if available, is used to form a new combination sequence, and the process iterates until either a PAPR smaller than the threshold is obtained, or a pre-defined maximum number of iterations is reached. If the maximum number of iterations is reached and no combination sequence is created that leads to an acceptable PAPR, then the transformed, combination sequence that exhibits the smallest PAPR level is selected for transmission.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: May 17, 2011
    Assignee: Research In Motion Limited
    Inventors: Shouxing Qu, Farzaneh Kohandani
  • CODE BOOKS FOR MULTIPLE-INPUT AND MULTIPLE-OUTPUT COMMUNICATION SYSTEMS
    Publication number: 20100322341
    Abstract: A method and device for transmitting and receiving data. A device comprises a code book and a transmitter. The code book comprises a plurality of codewords, wherein the plurality of codewords correspond to a plurality of vectors having a largest minimum chordal distance with respect to the plurality of vectors. The transmitter is configured to send a number of wireless signals using the code book. A receiver receives and decodes the number of wireless signals.
    Type: Application
    Filed: February 9, 2010
    Publication date: December 23, 2010
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Alireza Bayesteh, Farzaneh Kohandani, Yongkang Jia
  • APPARATUS, AND ASSOCIATED METHOD, FOR COMMUNICATING A DATA BLOCK IN A MULTI CARRIER MODULATION COMMUNICATION SCHEME
    Publication number: 20080187069
    Abstract: Apparatus, and an associated method, for sending a data block in an OFDM, or other MCM, communication system with reduced PAPR is provided. The data block is combined with a random scrambling sequence. An IDFT operation is performed upon the combined sequence, and its PAPR, peak-to-average power ratio, is calculated. The PAPR is compared against a threshold. If the PAPR is smaller than a threshold, the transformed, combination sequence is transmitted. Otherwise, a different scrambling sequence, if available, is used to form a new combination sequence, and the process iterates until either a PAPR smaller than the threshold is obtained, or a pre-defined maximum number of iterations is reached. If the maximum number of iterations is reached and no combination sequence is created that leads to an acceptable PAPR, then the transformed, combination sequence that exhibits the smallest PAPR level is selected for transmission.
    Type: Application
    Filed: February 2, 2007
    Publication date: August 7, 2008
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: SHOUXING QU, FARZANEH KOHANDANI