Patents by Inventor Eric Alliot

Eric Alliot 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: 9350415
    Abstract: Process of a finger assignment in a rake receiver for a wireless communication device comprising the following steps: —detection (21) of a pilot (CPICH) and the comparison of its energy according to a first threshold value; —detection (22), on the basis of said first threshold value, of a first significant path; —assignment (23) of said first significant path to a first finger of the rake receiver; —determination (24) of an observation window; —application (25) of a second threshold value, distinct and lower than said first value, for the detection of secondary paths; —rake fingers assignment to secondary paths detected.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: May 24, 2016
    Assignee: ST-ERICSSON SA
    Inventors: Pierre Demaj, Fabrizio Tomatis, Eric Alliot
  • Patent number: 9306783
    Abstract: Method of data processing for selectively activating, at a mobile station, a mode of communication related to VAMOS-2 technology. The method includes the steps of: receiving a first signal of a first subchannel, the first signal containing a first training sequence, and receiving a second signal of a second subchannel, the second signal containing a second training sequence, the second signal being orthogonally multiplexed with respect to the first signal, and using the first training sequence and the second training sequence to: determine a value of a parameter defining a ratio between the first subchannel power and the second subchannel power, and determine a signal to noise ratio estimation, and determine, using the parameter value and the signal to noise estimation, whether the mode of communication has to be activated.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: April 5, 2016
    Assignee: ST-ERICSSON SA
    Inventors: Marc Soler, Eric Alliot
  • Patent number: 9225469
    Abstract: A method for determining a length of a message block of k bits from a length candidate set, comprising steps of: —Selecting (401) a length candidate (N) among the set; —Decoding (402) a received frame to form a decoded sequence that includes a message of a length equal to the length candidate (N), by a Viterbi decoder; —Calculating (402) a Viterbi variable (S(N)) for this candidate (N), —Comparing (403) the Viterbi variable with a threshold (?), —Repeating the selecting (401), decoding (402) and calculating (402) steps if said Viterbi variable (S(N)) is greater than the threshold (?) and if there exists an unselected length candidate among the set; —If the Viterbi variable is greater than a best value (Sbest), updating this best value to the Viterbi variable and updating a best length (Nend) to this candidate; —Wherein the threshold (?) is initially set to a value determined according to the conditions of reception of the receiver.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: December 29, 2015
    Assignee: ST-ERICSSON SA
    Inventor: Eric Alliot
  • Publication number: 20150172000
    Abstract: A method for determining a length of a message block of k bits from a length candidate set, comprising steps of: —Selecting (401) a length candidate (N) among the set; —Decoding (402) a received frame to form a decoded sequence that includes a message of a length equal to the length candidate (N), by a Viterbi decoder; —Calculating (402) a Viterbi variable (S(N)) for this candidate (N), —Comparing (403) the Viterbi variable with a threshold (?), —Repeating the selecting (401), decoding (402) and calculating (402) steps if said Viterbi variable (S(N)) is greater than the threshold (?) and if there exists an unselected length candidate among the set; —If the Viterbi variable is greater than a best value (Sbest), updating this best value to the Viterbi variable and updating a best length (Nend) to this candidate; —Wherein the threshold (?) is initially set to a value determined according to the conditions of reception of the receiver.
    Type: Application
    Filed: June 26, 2013
    Publication date: June 18, 2015
    Inventor: Eric Alliot
  • Publication number: 20140315534
    Abstract: Method of data processing for selectively activating, at a mobile station (1, 2), a mode of communication related to VAMOS-2 technology, the method comprising the steps of:—receiving a first signal of a first subchannel (C1), the first signal containing a first training sequence (mwant), and receiving a second signal of a second subchannel (C2), the second signal containing a second training sequence (mosc), the second signal being orthogonally multiplexed with respect to the first signal,—using the first training sequence and the second training sequence to:—determine a value of a parameter (?) defining a ratio between the first subchannel power and the second subchannel power, and—determine a signal to noise ratio estimation, and—determining, using the parameter value and the signal to noise estimation, whether the said mode of communication has to be activated.
    Type: Application
    Filed: October 4, 2012
    Publication date: October 23, 2014
    Inventors: Marc Soler, Eric Alliot
  • Patent number: 8831078
    Abstract: Method for identifying within an incident signal at least one frequency communication channel, the incident signal being received on a wireless apparatus, comprising determining a power spectral density (PSD) of that incident signal and identifying the at least one channel from the PSD. The PSD determination comprises storing temporal samples of the incident signal received during a predetermined duration and performing a first Discrete Fourier Transform (DFT) processing on the stored samples.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: September 9, 2014
    Assignee: Ericsson Modems SA
    Inventors: Eric Alliot, Mark Wallis, Issam Toufik
  • Patent number: 8295327
    Abstract: The invention is directed towards a method and apparatus for estimating a noise variance in a receiver of a code multiplex telecommunications system with orthogonal spreading codes, wherein respective real and imaginary parts of a sum and a difference of two estimated symbols having substantially same amplitudes are determined, and then respective minimum energy components of the determined real and imaginary parts of the sum and difference are determined. The respective minimum energy components are finally combined to obtain the noise variance. Thereby, noise variance can be estimated simply based on addition and comparison operations, which reduces complexity and processing load.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: October 23, 2012
    Assignee: ST-Ericsson SA
    Inventors: Ahmet Bastug, Eric Alliot
  • Publication number: 20120236919
    Abstract: Method for identifying within an incident signal at least one frequency communication channel, said incident signal being received on a wireless apparatus, comprising determining a power spectral density (PSD) of that incident signal and identifying said at least one channel from said PSD. The said PSD determination comprises storing temporal samples of said incident signal received during a predetermined duration and performing a first Discrete Fourier Transform (DFT) processing on said stored samples.
    Type: Application
    Filed: December 1, 2010
    Publication date: September 20, 2012
    Applicants: ST-ERICSSON SA, ST-ERICSSON (FRANCE) SAS
    Inventors: Eric Alliot, Mark Wallis, Issam Toufik
  • Publication number: 20120002706
    Abstract: Process of a finger assignment in a rake receiver for a wireless communication device comprising the following steps:—detection (21) of a pilot (CPICH) and the comparison of its energy according to a first threshold value;—detection (22), on the basis of said first threshold value, of a first significant path;—assignment (23) of said first significant path to a first finger of the rake receiver;—determination (24) of an observation window;—application (25) of a second threshold value, distinct and lower than said first value, for the detection of secondary paths;—rake fingers assignment to secondary paths detected.
    Type: Application
    Filed: March 11, 2010
    Publication date: January 5, 2012
    Inventors: Pierre Demaj, Fabrizio Tomatis, Eric Alliot
  • Patent number: 7835261
    Abstract: The invention relates to a mobile communication apparatus (200) comprising a receiver (203), a derotator (206), a demodulator (208) and a processor (212). The receiver (203) is connected to the derotator (206), the derotator (206) to the demodulator (208), and the controller (212) to the receiver (203), derotator (206) and demodulator (208). The derotator (206) comprises means for processing Primary Common Control Physical Channel during Space Time coding based Transmit Diversity transmission mode, pilot symbols, symbols during closed loop transmission modes, and means for outputting symbols to the demodulator in a temporal ordered sequence. The means are connected in series for enabling a universal derotator. A method for derotation is provided, comprising the steps of processing P-CCPCH during STTD transmission mode (1002), processing pilot symbols (1004), processing symbols during closed loop transmission modes (1006), and outputting symbols in a temporal ordered sequence (1008).
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: November 16, 2010
    Assignee: NXP B.V.
    Inventors: Eric Alliot, Rodolfo Verzegnassi
  • Publication number: 20100142657
    Abstract: A method and associated module for selection of a maximum peak in a correlation signal corresponding to the correlation between a code periodically transmitted by a transmitter, and an input signal received by a receiver on a radio channel, includes a selection criteria which is the time recurrence of the same position of peaks of correlation, taking into account a margin around the peak position compensating for a drift due to a frequency offset between the receiver and the transmitter.
    Type: Application
    Filed: October 9, 2007
    Publication date: June 10, 2010
    Inventors: Eric Alliot, Fabrizio Tomatis
  • Publication number: 20100027589
    Abstract: The invention is directed towards a method and apparatus for estimating a noise variance in a receiver of a code multiplex telecommunications system with orthogonal spreading codes, wherein respective real and imaginary parts of a sum and a difference of two estimated symbols having substantially same amplitudes are determined, and then respective minimum energy components of the determined real and imaginary parts of the sum and difference are determined. The respective minimum energy components are finally combined to obtain the noise variance. Thereby, noise variance can be estimated simply based on addition and comparison operations, which reduces complexity and processing load.
    Type: Application
    Filed: May 10, 2007
    Publication date: February 4, 2010
    Inventors: Ahmet Bastug, Eric Alliot
  • Publication number: 20070104251
    Abstract: The invention relates to a mobile communication apparatus (200) comprising a receiver (203), a derotator (206), a demodulator (208) and a processor (212). The receiver (203) is connected to the derotator (206), the derotator (206) to the demodulator (208), and the controller (212) to the receiver (203), derotator (206) and demodulator (208). The derotator (206) comprises means for processing Primary Common Control Physical Channel during Space Time coding based Transmit Diversity transmission mode, pilot symbols, symbols during closed loop transmission modes, and means for outputting symbols to the demodulator in a temporal ordered sequence. The means are connected in series for enabling a universal derotator. A method for derotation is provided, comprising the steps of processing P-CCPCH during STTD transmission mode (1002), processing pilot symbols (1004), processing symbols during closed loop transmission modes (1006), and outputting symbols in a temporal ordered sequence (1008).
    Type: Application
    Filed: December 14, 2004
    Publication date: May 10, 2007
    Inventors: Eric Alliot, Rodolfo Verzegnassi