Patents by Inventor Ramon A Sanchez
Ramon A Sanchez 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).
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Publication number: 20150106577Abstract: One embodiment is an apparatus having a memory, a controller, and a de-interleaving module. The memory is configured to store portions of a set of interleaved values, where the set of interleaved values correspond to a single application of an interleaving mapping to a set of un-interleaved values. The controller is configured to retrieve each portion from an other memory that stores the set of interleaved values by moving the portion from the other memory to the memory. The de-interleaving module is configured to de-interleave the interleaved values in at least one of the portions to generate a de-interleaved portion such that processing downstream of the de-interleaving module can begin processing the de-interleaved portion before all of the interleaved values in the set of interleaved values are de-interleaved by the de-interleaving module.Type: ApplicationFiled: October 14, 2013Publication date: April 16, 2015Applicant: LSI CORPORATIONInventors: Kannan Rajamani, Ramon Sanchez, Kevin R. Kinney
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Patent number: 8982992Abstract: Block-based crest factor reduction (CFR) techniques are provided. An exemplary block-based crest factor reduction method comprises obtaining a block of data samples comprised of a plurality of samples; applying the block of data to a crest factor reduction block; and providing a processed block of data from the crest factor reduction block. The block-based crest factor reduction method can optionally be iteratively performed a plurality of times for the block of data. The block of data samples can comprise an expanded block having at least one cursor block. For example, at least two pre-cursor blocks and one post-cursor block can be employed. The peaks can be cancelled, for example, only in the block of data samples and in a first of the pre-cursor blocks.Type: GrantFiled: October 26, 2012Date of Patent: March 17, 2015Assignee: LSI CorporationInventors: Kameran Azadet, Albert Molina, Joseph H. Othmer, Meng-Lin Yu, Ramon Sanchez Perez
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Publication number: 20140247099Abstract: In at least one embodiment, an apparatus including a relay is provided. The relay includes a coil, a terminal, and a thermal conductive material. The coil generates heat in response to a current. The terminal includes a first contact positioned thereon. The coil and the terminal define a cavity there between. The thermal conductive material is positioned in the cavity and is in thermal communication with the coil and the first contact to transfer heat from the coil to the first contact.Type: ApplicationFiled: February 24, 2014Publication date: September 4, 2014Applicant: Lear CorporationInventors: Alberto Aragones Carrete, Josep Maria Domenech, Ramon Sanchez Rovira, Francesc-Xavier Grau-Vidal, Jaume Giralt-Marcé, Joan Herrero-Sabartés, Ildefonso Cuesta-Romeo
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Patent number: 8811927Abstract: In one embodiment, a receiver is provided for use in a multiple-input system that includes a receiving antenna receiving a time-domain signal corresponding to a plurality of signals transmitted from a plurality of transmitting antennas. The receiver includes: (a) a transform unit adapted to transform the time-domain signal into a frequency-domain signal; (b) a channel estimation unit adapted to estimate, based on the frequency-domain signal and a frequency-domain pilot signal, a combined transfer function corresponding to a plurality of transfer functions of respective channels between the plurality of transmitting antennas and the receiving antenna; and (c) a channel separation unit including a plurality of frequency-domain convolution units that separate the combined transfer function into a plurality of estimated channel transfer functions.Type: GrantFiled: August 16, 2013Date of Patent: August 19, 2014Assignee: Agere Systems LLCInventors: Kameran Azadet, Samer Hijazi, Sunitha Kopparthi, Albert Molina, Ramon Sanchez
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Publication number: 20140136127Abstract: A method and apparatus for determining the location of a phase boundary such as a fill level, in a vessel. The method includes: providing at least one source of radiation capable of emitting radiation through a portion of the interior of the vessel; providing a plurality of radiation detectors, each detector being capable of detecting, within a part of the measurement range, radiation emitted by the source; and providing a data processing unit for calculation of the position of the phase boundary from the amount of radiation detected by the detectors, wherein the data processing unit calculates the position of the phase boundary from the amount of radiation detected by the detectors by: (i) in a first step, determining within which detector stage the phase boundary is located; and then (ii) in a second step, determining the position of the phase boundary within the detector stage determined in (i).Type: ApplicationFiled: June 29, 2012Publication date: May 15, 2014Inventors: Edgar Ramon Sanchez Galicia, Kenneth James, Stephen John Roe
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Publication number: 20140086356Abstract: Software Digital Front End (SoftDFE) signal processing techniques are provided. One or more digital front end (DFE) functions are performed on a signal in software by executing one or more specialized instructions on a processor to perform the one or more digital front end (DFE) functions on the signal, wherein the processor has an instruction set comprised of one or more of linear and non-linear instructions. A block of samples comprised of a plurality of data samples is optionally formed and the digital front end (DFE) functions are performed on the block of samples. The specialized instructions can include a vector convolution function, a complex exponential function, an xk function, a vector compare instruction, a vector max( ) instruction, a vector multiplication instruction, a vector addition instruction, a vector sqrt( ) instruction, a vector 1/x instruction, and a user-defined non-linear instruction.Type: ApplicationFiled: October 26, 2012Publication date: March 27, 2014Applicant: LSI CorporationInventors: Kameran Azadet, Chengzhou Li, Albert Molina, Joseph H. Othmer, Steven C. Pinault, Meng-Lin Yu, Joseph Willimas, Ramon Sanchez Perez, Jian-Guo Chen
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Publication number: 20140072073Abstract: Block-based crest factor reduction (CFR) techniques are provided. An exemplary block-based crest factor reduction method comprises obtaining a block of data samples comprised of a plurality of samples; applying the block of data to a crest factor reduction block; and providing a processed block of data from the crest factor reduction block. The block-based crest factor reduction method can optionally be iteratively performed a plurality of times for the block of data. The block of data samples can comprise an expanded block having at least one cursor block. For example, at least two pre-cursor blocks and one post-cursor block can be employed. The peaks can be cancelled, for example, only in the block of data samples and in a first of the pre-cursor blocks.Type: ApplicationFiled: October 26, 2012Publication date: March 13, 2014Applicant: LSI CorporationInventors: Kameran Azadet, Albert Molina, Joseph H. Othmer, Meng-Lin Yu, Ramon Sanchez Perez
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Publication number: 20130336144Abstract: In one embodiment, a receiver is provided for use in a multiple-input system that includes a receiving antenna receiving a time-domain signal corresponding to a plurality of signals transmitted from a plurality of transmitting antennas. The receiver includes: (a) a transform unit adapted to transform the time-domain signal into a frequency-domain signal; (b) a channel estimation unit adapted to estimate, based on the frequency-domain signal and a frequency-domain pilot signal, a combined transfer function corresponding to a plurality of transfer functions of respective channels between the plurality of transmitting antennas and the receiving antenna; and (c) a channel separation unit including a plurality of frequency-domain convolution units that separate the combined transfer function into a plurality of estimated channel transfer functions.Type: ApplicationFiled: August 16, 2013Publication date: December 19, 2013Applicant: Agere Systems LLCInventors: Kameran Azadet, Samer Hijazi, Sunitha Kopparthi, Albert Molina, Ramon Sanchez
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Patent number: 8553814Abstract: In a communication receiver, timing recovery circuitry includes a loop filter associated with a timing recovery loop of a first communication device. The first communication device is in communication with a second communication device prior to a temporary power down/power up sequence in the first communication device. The loop filter is configured to: (i) temporarily disable at least a portion of the timing recovery loop after the temporary power down/power up sequence in the first communication device; and (ii) initiate a progression through a set of potential sampling phases to determine a given sampling phase at which the first communication device can recommence communication with the second communication device.Type: GrantFiled: July 31, 2009Date of Patent: October 8, 2013Assignee: LSI CorporationInventors: Albert Molina, Oisin Ó Cuanacháin, Ramon Sanchez
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Patent number: 8515376Abstract: In one embodiment, a receiver is provided for use in a multiple-input system that includes a receiving antenna receiving a time-domain signal corresponding to a plurality of signals transmitted from a plurality of transmitting antennas. The receiver includes: (a) a transform unit adapted to transform the time-domain signal into a frequency-domain signal; (b) a channel estimation unit adapted to estimate, based on the frequency-domain signal and a frequency-domain pilot signal, a combined transfer function corresponding to a plurality of transfer functions of respective channels between the plurality of transmitting antennas and the receiving antenna; and (c) a channel separation unit including a plurality of frequency-domain convolution units that separate the combined transfer function into a plurality of estimated channel transfer functions.Type: GrantFiled: September 14, 2012Date of Patent: August 20, 2013Assignee: Agere Systems LLCInventors: Kameran Azadet, Samer Hijazi, Sunitha Kopparthi, Albert Molina, Ramon Sanchez
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Patent number: 8385489Abstract: Methods and apparatus are provided for wireless channel estimation using interpolation elimination in the Eigen domain. Channel components at known OFDM symbol locations are interpolated to other OFDM symbol locations. Methods and apparatus are provided for interpolating in the Eigen domain between reference signals (i.e., training signals) to estimate the equalizer coefficients with a reduced complexity. In particular, one aspect of the present invention performs the required interpolation before a required matrix inversion in the Eigen domain.Type: GrantFiled: August 25, 2009Date of Patent: February 26, 2013Assignee: LSI CorporationInventors: Kameran Azadet, Samer Hijazi, Albert Molina, Joe H. Othmer, Ramon Sanchez
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Publication number: 20130028342Abstract: In one embodiment, a receiver is provided for use in a multiple-input system that includes a receiving antenna receiving a time-domain signal corresponding to a plurality of signals transmitted from a plurality of transmitting antennas. The receiver includes: (a) a transform unit adapted to transform the time-domain signal into a frequency-domain signal; (b) a channel estimation unit adapted to estimate, based on the frequency-domain signal and a frequency-domain pilot signal, a combined transfer function corresponding to a plurality of transfer functions of respective channels between the plurality of transmitting antennas and the receiving antenna; and (c) a channel separation unit including a plurality of frequency-domain convolution units that separate the combined transfer function into a plurality of estimated channel transfer functions.Type: ApplicationFiled: September 14, 2012Publication date: January 31, 2013Applicant: AGERE SYSTEMS LLCInventors: Kameran Azadet, Samer Hijazi, Sunitha Kopparthi, Albert Molina, Ramon Sanchez
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Patent number: 8290462Abstract: In one embodiment, a receiver is provided for use in a multiple-input system that includes a receiving antenna receiving a time-domain signal corresponding to a plurality of signals transmitted from a plurality of transmitting antennas. The receiver includes: (a) a transform unit adapted to transform the time-domain signal into a frequency-domain signal; (b) a channel estimation unit adapted to estimate, based on the frequency-domain signal and a frequency-domain pilot signal, a combined transfer function corresponding to a plurality of transfer functions of respective channels between the plurality of transmitting antennas and the receiving antenna; and (c) a channel separation unit including a plurality of frequency-domain convolution units that separate the combined transfer function into a plurality of estimated channel transfer functions.Type: GrantFiled: February 4, 2009Date of Patent: October 16, 2012Assignee: Agere Systems LLCInventors: Kameran Azadet, Samer Hijazi, Sunitha Kopparthi, Albert Molina, Ramon Sanchez
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Publication number: 20110310944Abstract: A method and system for canonical channel estimation in the Long Term Evolution uplink where a multi-frequency signal is generated and then converted to frequency spectrum which is then convolved in the frequency domain with a truncated window function to obtain a time domain channel impulse response. The time domain channel impulse response can be then transformed to a frequency domain to produce a down sampled user channel response, which can be then linearly interpolated to provide a channel estimate for a plurality of subcarriers. Such an approach achieves channel estimation within Long Term Evolution at only canonical locations to reduce complexity without loss in channel entropy.Type: ApplicationFiled: October 19, 2010Publication date: December 22, 2011Inventors: SAMER HIJAZI, KAMERAN AZADET, MENG-LIN YU, JOSEPH OTHMER, RAMON SANCHEZ PEREZ
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Patent number: 8015226Abstract: Methods and apparatus are provided for performing reduced complexity discrete Fourier transforms using interpolation An input sequence of length N is transformed by extending the input sequence to an extended input sequence of length M, where M is greater than N (a power of two greater than N); performing a discrete Fourier Transform (DFT), such as a power-of-two DFT, on the extended input sequence to obtain an interpolated sequence; and applying a conversion matrix to the interpolated sequence to obtain a DFT output for the input sequence of length N. The input sequence of length N can be extended to an extended input sequence of length M, for example, by employing a zero padding technique, a cyclic extension technique, a windowing of a cyclic extended sequence technique or a resampling-based interpolation technique to extend the input sequence. The conversion matrix is substantially a sparse matrix.Type: GrantFiled: September 21, 2007Date of Patent: September 6, 2011Assignee: Agere Systems Inc.Inventors: Kameran Azadet, Samer Hijazi, Sunitha Kopparthi, Albert Molina, Ramon Sanchez
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Publication number: 20110051867Abstract: Methods and apparatus are provided for wireless channel estimation using interpolation elimination in the Eigen domain. Channel components at known OFDM symbol locations are interpolated to other OFDM symbol locations. Methods and apparatus are provided for interpolating in the Eigen domain between reference signals (i.e., training signals) to estimate the equalizer coefficients with a reduced complexity. In particular, one aspect of the present invention performs the required interpolation before a required matrix inversion in the Eigen domain.Type: ApplicationFiled: August 25, 2009Publication date: March 3, 2011Inventors: Kameran Azadet, Samer Hijazi, Albert Molina, Joe H. Othmer, Ramon Sanchez
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Publication number: 20110026650Abstract: In a communication receiver, timing recovery circuitry includes a loop filter associated with a timing recovery loop of a first communication device. The first communication device is in communication with a second communication device prior to a temporary power down/power up sequence in the first communication device. The loop filter is configured to: (i) temporarily disable at least a portion of the timing recovery loop after the temporary power down/power up sequence in the first communication device; and (ii) initiate a progression through a set of potential sampling phases to determine a given sampling phase at which the first communication device can recommence communication with the second communication device.Type: ApplicationFiled: July 31, 2009Publication date: February 3, 2011Inventors: Albert Molina, Oisin Ó Cuanacháin, Ramon Sanchez
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Publication number: 20100304687Abstract: Methods and apparatus are provided for simultaneous estimation of frequency offset and channel response for a communication system, such as a MU-MIMO communication system. An iterative method is provided for estimating frequency offset and channel response for a plurality of frequency resources. The channel response is estimated for a set of users sharing a given one of the frequency resources. In addition, the frequency offset is estimated for the users in the set, wherein the channel response and frequency offset of users not in the set are maintained at their latest updated values. Initially, the channel response of a user can be an ideal channel response and the frequency offset can be approximately zero.Type: ApplicationFiled: May 29, 2009Publication date: December 2, 2010Inventors: Kameran Azadet, Samer Hijazi, Albert Molina, Ramon Sanchez
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Publication number: 20100197264Abstract: In one embodiment, a receiver is provided for use in a multiple-input system that includes a receiving antenna receiving a time-domain signal corresponding to a plurality of signals transmitted from a plurality of transmitting antennas. The receiver includes: (a) a transform unit adapted to transform the time-domain signal into a frequency-domain signal; (b) a channel estimation unit adapted to estimate, based on the frequency-domain signal and a frequency-domain pilot signal, a combined transfer function corresponding to a plurality of transfer functions of respective channels between the plurality of transmitting antennas and the receiving antenna; and (c) a channel separation unit including a plurality of frequency-domain convolution units that separate the combined transfer function into a plurality of estimated channel transfer functions.Type: ApplicationFiled: February 4, 2009Publication date: August 5, 2010Applicant: Agere Systems Inc.Inventors: Kameran Azadet, Samer Hijazi, Sunitha Kopparthi, Albert Molina, Ramon Sanchez
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Publication number: 20100147451Abstract: The use of silanes as adhesion promoters between two uncured or partially cured organic surfaces, especially such surfaces that do not adhere well to each other, and particular applications of such silanes, such as in the formation of boat hull laminates.Type: ApplicationFiled: April 24, 2008Publication date: June 17, 2010Applicant: EVONIK DEGUSSA GmbHInventor: Ramon Sanchez Morillo