Patents by Inventor Yves-Paul N. Nakache

Yves-Paul N. Nakache 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).

  • Space-time-frequency sensing of RF spectrum in cognitive radios
    Patent number: 7610036
    Abstract: A method detects unused frequency bands in a cognitive radio network. Multiple frequency bands for RF signals are sensed using an antenna array including a plurality of elements coupled to a receive RF chain, in which the plurality of elements are individually controllable. For each frequency band, multiple spatial directions are sensed for the RF signals using the antenna array. A particular frequency band and a particular direction and a particular time slot are assigned as an available frequency band, an available direction and a particular time slot for transmitting RF signals in a cognitive radio if the RF signals are not sensed in the particular spatial direction for the particular frequency band, and in which the RF signals are transmitted by a transmit chain connected to the antenna array.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: October 27, 2009
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Hongyuan Zhang, Yves-Paul N. Nakache, Jinyun Zhang
  • Space-Time-Frequency Sensing of RF Spectrum in Cognitive Radios
    Publication number: 20080166974
    Abstract: A method detects unused frequency bands in a cognitive radio network. Multiple frequency bands for RF signals are sensed using an antenna array including a plurality of elements coupled to a receive RF chain, in which the plurality of elements are individually controllable. For each frequency band, multiple spatial directions are sensed for the RF signals using the antenna array. A particular frequency band and a particular direction and a particular time slot are assigned as an available frequency band, an available direction and a particular time slot for transmitting RF signals in a cognitive radio if the RF signals are not sensed in the particular spatial direction for the particular frequency band, and in which the RF signals are transmitted by a transmit chain connected to the antenna array.
    Type: Application
    Filed: January 8, 2007
    Publication date: July 10, 2008
    Inventors: Koon Hoo Teo, Hongyuan Zhang, Yves-Paul N. Nakache, Jinyun Zhang