Patents by Inventor Yuval Lomnitz

Yuval Lomnitz 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: 7606139
    Abstract: A method for detecting a preamble location in a multiple preamble OFDM (Orthogonal Frequency Division Multiplexing) system is disclosed. An OFDM signal is generated with a plurality of frames, and each of the frames includes symbols and a predetermined preamble symbol. A maximum FDDC (Frequency Domain Differential Correlator) value is computed for each of the symbols in some of the frames. The preamble location in a frame is determined by summing the maximum FDDC value for each symbol at a same frame location in consecutive frames of the OFDM signal.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: October 20, 2009
    Assignee: Intel Corporation
    Inventors: Eyal Bick, Uri Perlmutter, Yuval Lomnitz
  • Patent number: 7474640
    Abstract: Embodiments of the present invention provide a method, apparatus and system of interference mitigation in wireless communication. In some demonstrative embodiments the method may include determining one or more factors to be applied to one or more likelihood ratio values of one or more current symbols received by a station over one or more communication subcarriers, respectively, based on one or more sets of estimated error values, respectively, wherein the set of error values corresponds to a plurality of previous symbols received over the subcarrier. In some demonstrative embodiments the method may include determining the likelihood ratio value based on a probability that the current symbol includes interference caused by one or more other stations transmitting over the subcarrier. Other embodiments are described and claimed.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: January 6, 2009
    Assignee: Intel Corporation
    Inventors: Ayelet Doron, Yuval Lomnitz
  • Publication number: 20080267059
    Abstract: Methods and arrangements for wireless communications are described. Embodiments include transformations, code, state machines or other logic to receive from a transmitter a signal representing a known sequence of symbols. The signal may be transmitted over a plurality of sub channels. The embodiments may also include determining channel responses at the sub channels and determining a reception of the known sequence. The determining may include treating the channel responses at the sub channels in a differential manner to cancel out channel phase responses and obtain channel amplitudes. In some embodiments, the cancelling may be performed by multiplying frequency domain values representing reception of a sub channel by the complex conjugate of frequency domain values of a neighboring sub channel. Many embodiments may also include calculating a carrier to interference and noise ratio (CINR) of the signal. In several embodiments, the signal may represent the preamble of a wireless frame.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventors: Eyal Bick, Uri Perlmutter, Yuval Lomnitz
  • Publication number: 20080137527
    Abstract: A method for detectable a pre-amble location in a multiple preamble OFDM (Orthogonal Frequency Division Multiplexing) system is disclosed. An OFDM signal is generated with a plurality of frames, and each of the frames includes symbols and a predetermined preamble symbol. A maximum FDDC (Frequency Domain Differential Correlator) value is computed for each of the symbols in some of the frames. The pre-amble location in a frame is determined by summing the maximum FDDC value for each symbol at a same frame location in consecutive frames of the OFDM signal.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 12, 2008
    Inventors: Eyal Bick, Uri Perlmutter, Yuval Lomnitz
  • Publication number: 20070230631
    Abstract: Embodiments of the present invention provide a method, apparatus and system of decoding spatially multiplexed signals. In some demonstrative embodiments the method may include, for example, determining one or more hypothetical values of a transmitted signal of a set of transmitted signals based on one or more respective sets of hypothetical values assigned to a subset of the set of transmitted signals.
    Type: Application
    Filed: March 30, 2006
    Publication date: October 4, 2007
    Inventors: Yuval Lomnitz, Yang-Seok Choi
  • Publication number: 20070070932
    Abstract: Embodiments of the present invention provide a method, apparatus and system of interference mitigation in wireless communication. In some demonstrative embodiments the method may include determining one or more factors to be applied to one or more likelihood ratio values of one or more current symbols received by a station over one or more communication subcarriers, respectively, based on one or more sets of estimated error values, respectively, wherein the set of error values corresponds to a plurality of previous symbols received over the subcarrier. In some demonstrative embodiments the method may include determining the likelihood ratio value based on a probability that the current symbol includes interference caused by one or more other stations transmitting over the subcarrier. Other embodiments are described and claimed.
    Type: Application
    Filed: September 28, 2005
    Publication date: March 29, 2007
    Inventors: Ayelet Doron, Yuval Lomnitz
  • Publication number: 20050052990
    Abstract: A method for estimating the error vector magnitude (EVM) of an OFDM signal comprises the steps of obtaining a multi-tone EVM of a separate multi-tone signal, and using the multi-tone EVM to estimate the OFDM EVM. The multi-tone signal is designed to have carriers that occupy a small fraction of OFDM bins, and its EVM is estimated from the ratio of sums of full bin energies and empty bin energies.
    Type: Application
    Filed: September 10, 2003
    Publication date: March 10, 2005
    Inventor: Yuval Lomnitz