Patents by Inventor Daniel Stopler
Daniel Stopler 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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Patent number: 11777539Abstract: A transmit power optimization and rate-control system includes a transmitter circuit having one or more power amplifiers transmit radio-frequency (RF) signals at a transmission (Tx) rate and a Tx power level. A receiver circuit receives RF signals, decodes the received RF signals and provides one or more Tx status feedbacks. A rate-control module adjusts the Tx rate based at least on a channel condition. A probing engine generates at least two consecutive frames at a first Tx power level, and a second Tx power level in response to a trigger causes the transmitter to transmit the at least two consecutive frames, and processes respective Tx status feedbacks received in response to transmission of the two consecutive frames in order to optimize the Tx power of the transmitter.Type: GrantFiled: October 30, 2019Date of Patent: October 3, 2023Assignee: Avago Technologies International Sales Pte. LimitedInventors: Amir Dov Eliaz, Nir Stahl Diskin, Daniel Stopler, Rohit Gaikwad, Vinko Erceg, Peyush Agarwal, Rana A. Abdelaal, Hyoung Keun Ryu
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Patent number: 11451283Abstract: A method for channel smoothing with transmit beamforming includes transmitting, by a first device, a non-data-packet (NDP) frame to a second device. The method also includes receiving, by the second device, the NDP frame and transmitting a compressed report to the first device. The method further includes receiving, by the first device, the compressed report and deriving a first beamforming matrix from the compressed report. A second beamforming matrix is generated employing a processing known to the second device, and a data frame is transmitted to the second device using the second beamforming matrix.Type: GrantFiled: May 3, 2021Date of Patent: September 20, 2022Assignee: Avago Technologies International Sales Pte. LimitedInventors: Roy Oren, Daniel Stopler, Shimon Benjo
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Publication number: 20210367653Abstract: A method for channel smoothing with transmit beamforming includes transmitting, by a first device, a non-data-packet (NDP) frame to a second device. The method also includes receiving, by the second device, the NDP frame and transmitting a compressed report to the first device. The method further includes receiving, by the first device, the compressed report and deriving a first beamforming matrix from the compressed report. A second beamforming matrix is generated employing a processing known to the second device, and a data frame is transmitted to the second device using the second beamforming matrix.Type: ApplicationFiled: May 3, 2021Publication date: November 25, 2021Inventors: Roy OREN, Daniel Stopler, Shimon Benjo
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Publication number: 20200136661Abstract: A transmit power optimization and rate-control system includes a transmitter circuit having one or more power amplifiers transmit radio-frequency (RF) signals at a transmission (Tx) rate and a Tx power level. A receiver circuit receives RF signals, decodes the received RF signals and provides one or more Tx status feedbacks. A rate-control module adjusts the Tx rate based at least on a channel condition. A probing engine generates at least two consecutive frames at a first Tx power level, and a second Tx power level in response to a trigger causes the transmitter to transmit the at least two consecutive frames, and processes respective Tx status feedbacks received in response to transmission of the two consecutive frames in order to optimize the Tx power of the transmitter.Type: ApplicationFiled: October 30, 2019Publication date: April 30, 2020Inventors: Amir Dov ELIAZ, Nir STAHL DISKIN, Daniel STOPLER, Rohit GAIKWAD, Vinko ERCEG, Peyush AGARWAL, Rana A. ABDELAAL, Hyoung Keun RYU
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Patent number: 10616032Abstract: An apparatus includes a demapper to receive a number of bit streams received by multiple radio-frequency (RF) antennas. The demapper can compute a first reliability metric associated with a first stream and a second reliability metric associated with a second stream. A channel decoder processes the first and the second reliability metrics to recover decoded data. The demapper is a reduced complexity demapper and uses a symbol subset of the first stream to compute, by employing look-up tables, the second reliability metric for the second stream.Type: GrantFiled: August 23, 2018Date of Patent: April 7, 2020Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITEDInventors: Ilan Reuven, Roy Oren, Rethnakaran Pulikkoonattu, Daniel Stopler, Amir Eliaz
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Publication number: 20200067758Abstract: An apparatus includes a demapper to receive a number of bit streams received by multiple radio-frequency (RF) antennas. The demapper can compute a first reliability metric associated with a first stream and a second reliability metric associated with a second stream. A channel decoder processes the first and the second reliability metrics to recover decoded data. The demapper is a reduced complexity demapper and uses a symbol subset of the first stream to compute, by employing look-up tables, the second reliability metric for the second stream.Type: ApplicationFiled: August 23, 2018Publication date: February 27, 2020Inventors: Ilan REUVEN, Roy OREN, Rethnakaran PULIKKOONATTU, Daniel STOPLER, Amir ELIAZ
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Patent number: 10498486Abstract: An apparatus includes a demapper to compute a reliability metric associated with a number of bit streams received by multiple radio-frequency (RF) antennas. The apparatus further includes a channel decoder in a feedback loop with the demapper to process the reliability metric and to provide a feedback signal to the demapper. The demapper is an iterative demapper and can use a symbol subset of at least a first stream of the plurality of bit streams and the feedback signal to compute the reliability metric for a second stream of the plurality of bit streams.Type: GrantFiled: August 23, 2018Date of Patent: December 3, 2019Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Daniel Stopler, Rethnakaran Pulikkoonattu, Roy Oren, Ilan Reuven, Amir Eliaz
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Patent number: 10367671Abstract: High peak-to-average ratio of OFDM signals requires large back-off from an RF power amplifier's saturation power. A spectral shaper device therefore increases the output power and efficiency of the power amplifier. The shaper device performs linearization through digital predistortion, based on an out-of-band regrowth limit, as well as the EVM requirement for a particular data rate. The shaper can distribute the error energy, precisely, over frequencies such that each of the inband and out-of-band requirements is independently and individually met. The shaper distributes error energy to frequency regions in the spectrum to the maximally allowed by the standards and regulations, while not increasing the total error. The error energy is kept to the minimum where it is crucial in meeting EVM requirements. In this way, the shaper maximizes the allowable output power of the nonlinear power amplifier.Type: GrantFiled: November 28, 2017Date of Patent: July 30, 2019Assignee: AVAGO TECHNOLOGIES INTERNATIONALInventors: Dengwei Fu, Colin Fraser, Amir Eliaz, Daniel Stopler, Sandeep Shenoy
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Patent number: 10361808Abstract: A device includes circuitry configured to determine one or more signal processing capabilities of another device in communication with the device. The device configures a signal compression mode of the device to correspond to a first signal compression mode of a plurality signal compression modes based on the one or more signal processing capabilities of the other device. The device s configured to modify, in response to detecting variations in one or more network configuration properties or the one or more signal processing capabilities of the other device, the signal compression mode of the device.Type: GrantFiled: November 1, 2016Date of Patent: July 23, 2019Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITEDInventors: Amir Eliaz, Ilan Reuven, Daniel Stopler, Roy Oren, Shimon Benjo
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Publication number: 20190165981Abstract: High peak-to-average ratio of OFDM signals requires large back-off from an RF power amplifier's saturation power. A spectral shaper device therefore increases the output power and efficiency of the power amplifier. The shaper device performs linearization through digital predistortion, based on an out-of-band regrowth limit, as well as the EVM requirement for a particular data rate. The shaper can distribute the error energy, precisely, over frequencies such that each of the inband and out-of-band requirements is independently and individually met. The shaper distributes error energy to frequency regions in the spectrum to the maximally allowed by the standards and regulations, while not increasing the total error. The error energy is kept to the minimum where it is crucial in meeting EVM requirements. In this way, the shaper maximizes the allowable output power of the nonlinear power amplifier.Type: ApplicationFiled: November 28, 2017Publication date: May 30, 2019Applicant: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITEDInventors: Dengwei FU, Colin Fraser, Amir Eliaz, Daniel Stopler, Sandeep Shenoy
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Patent number: 9762350Abstract: A system that includes combiner circuitry configured to combine a first signal and a second signal to generate a third signal, wherein said third signal is output for transmission onto a communication medium. The system also includes nonlinearity modeling circuitry configured to model a nonlinear response of a nonlinear circuit, and generate a fourth signal through nonlinear distortion of a fifth signal using said model. The system also includes bin modification circuitry configured to generate said second signal through application of one or more weighting factors to frequency bins of said fourth signal, or of a transformed version of said fourth signal, and determine said weighting factors based on a difference, or squared difference, error metric.Type: GrantFiled: January 26, 2016Date of Patent: September 12, 2017Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Daniel Stopler, Amir Eliaz
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Patent number: 9763155Abstract: Systems and methods for staged connectivity and sleep mode are provided. Embodiments of the present disclosure optimize power consumption for a user across user devices by creating an ad hoc co-located network of user devices and establishing a device in the co-located network to act as a master (hub) device. In an embodiment, the system includes multiple user wireless devices and a network controller. The network controller identifies a set of proximate wireless devices and the power capability for each wireless device in the set. The network controller then selects a wireless device in the set to act as the hub (master) wireless device based on factors such as the power capabilities of each wireless device. The network controller then instructs the other wireless devices in the set to power down and instructs the appropriate network providers to handover communications to the hub (master) device.Type: GrantFiled: May 6, 2014Date of Patent: September 12, 2017Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Rafael Carmon, Wael Diab, Raymond Hayes, Daniel Stopler
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Publication number: 20170141875Abstract: A device includes circuitry configured to determine one or more signal processing capabilities of another device in communication with the device. The device configures a signal compression mode of the device to correspond to a first signal compression mode of a plurality signal compression modes based on the one or more signal processing capabilities of the other device. The device s configured to modify, in response to detecting variations in one or more network configuration properties or the one or more signal processing capabilities of the other device, the signal compression mode of the device.Type: ApplicationFiled: November 1, 2016Publication date: May 18, 2017Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Amir ELIAZ, Ilan Reuven, Daniel Stopler, Roy Oren, Shimon Benjo
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Patent number: 9596439Abstract: A method, circuit and system for transmission, receiving and processing of video data between a video source transceiver and a video sink transceiver. Video data or information to be transmitted, which instructs an image processor associated with a video sink to modify a previously video frame into a current frame. A Delta Frame may include one or more Grid Based Predicted Error (“GBPE”) Values. The GBPE may be generated by source-side image processing logic using processes or techniques similar to those described in the MPEG and/or H.264 Standards, with the exception that the prediction error values may be calculated relative to a noisy predicted frame (e.g. based on an analog reception of a base frame) which has been grid quantized based on video sink transceiver SNR (e.g. substantially each pixel value in the predicted frame is rounded off up or down to a value on some grid).Type: GrantFiled: January 18, 2011Date of Patent: March 14, 2017Assignee: Amimon Ltd.Inventor: Daniel Stopler
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Publication number: 20160241359Abstract: A transmitter comprises at least one nonlinear circuit, and a power spectral density (PSD) shaping circuit. The PSD shaping circuit is operable to receive a symbol of a modulated signal, wherein the symbol corresponds to a first one or more frequency bins. The PSD shaping circuit is operable to perform iterative processing of the symbol, wherein each iteration of the processing comprises: generation of a pre-distortion signal based on a model of the at least one nonlinear circuit, wherein the nonlinearly distorted signal corresponds to a second one or more frequency bins; and combination of the symbol, or a pre-distorted version of the symbol, with the nonlinearly-distorted signal. The generation of the pre-distorted signal may comprise generation of a nonlinearly-distorted signal, and adjustment of one or more components of the nonlinearly-distorted signal.Type: ApplicationFiled: January 26, 2016Publication date: August 18, 2016Applicant: MagnaCom Ltd.Inventors: Daniel Stopler, Amir Eliaz
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Publication number: 20160065329Abstract: A single-carrier receiver comprises a (FEC) decoder and a nonlinearity compensation circuit. The nonlinearity compensation circuit is operable to generate estimates of constellation points transmitted on a received signal based on soft decisions from the FEC decoder and based on a model of nonlinear distortion introduced by a transmitter from which the received signal was received. The generation of the estimates may be based on a measure of distance between a function of the received signal and a synthesized version of the received signal. The generation of the estimates may comprise iterative processing of symbols of the received signal, and the iterative processing may comprise a plurality of outer iterations and a plurality of inner iterations.Type: ApplicationFiled: August 21, 2015Publication date: March 3, 2016Inventors: Daniel Stopler, Roy Oren, Ilan Reuven, Amir Eliaz, Shimon Benjo
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Publication number: 20160065275Abstract: An OFDM receiver comprises a (FEC) decoder and a nonlinearity compensation circuit. The nonlinearity compensation circuit is operable to generate estimates of constellation points transmitted on each of a plurality of subcarriers of a received signal based on soft decisions from the FEC decoder and based on a model of nonlinear distortion introduced by a transmitter from which the received signal was received. The generation of the estimates may be based on a measure of distance between a function of the received signal and a synthesized version of the received signal. The generation of the estimates may comprise iterative processing of symbols of the received signal, and the iterative processing may comprise a plurality of outer iterations and a plurality of inner iterations.Type: ApplicationFiled: August 26, 2015Publication date: March 3, 2016Inventors: Ilan Reuven, Amir Eliaz, Shimon Benjo, Daniel Stopler, Roy Oren
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Publication number: 20160065328Abstract: An orthogonal frequency division multiple Access (OFDMA) receiver may comprise a forward error correction (FEC) decoder and nonlinearity compensation circuitry. The OFDMA receiver may be configured to receive a signal that is a result of multiple concurrent, partially synchronized transmissions from multiple transmitters using different subsets of subcarriers. The nonlinearity compensation circuit may be operable to generate estimates of constellation points transmitted on each of a plurality of the subcarriers of the received signal. The generation of the estimates may be based on soft decisions from the FEC decoder, and models of nonlinear distortion introduced by the multiple transmitters.Type: ApplicationFiled: September 2, 2015Publication date: March 3, 2016Inventors: Daniel Stopler, Ilan Reuven, Amir Eliaz, Roy Oren, Shimon Benjo
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Patent number: 9246523Abstract: A transmitter comprises at least one nonlinear circuit, and a power spectral density (PSD) shaping circuit. The PSD shaping circuit is operable to receive a symbol of a modulated signal, wherein the symbol corresponds to a first one or more frequency bins. The PSD shaping circuit is operable to perform iterative processing of the symbol, wherein each iteration of the processing comprises: generation of a pre-distortion signal based on a model of the at least one nonlinear circuit, wherein the nonlinearly distorted signal corresponds to a second one or more frequency bins; and combination of the symbol, or a pre-distorted version of the symbol, with the nonlinearly-distorted signal. The generation of the pre-distorted signal may comprise generation of a nonlinearly-distorted signal, and adjustment of one or more components of the nonlinearly-distorted signal.Type: GrantFiled: April 15, 2015Date of Patent: January 26, 2016Assignee: MagnaCom Ltd.Inventors: Daniel Stopler, Amir Eliaz
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Patent number: 9191247Abstract: An electronic receiver comprises sequence estimation circuitry operable to implement a sequence estimation algorithm. In the sequence estimation algorithm, each of a plurality of possible current states of the signal may have associated with it a respective Nc possible prior states and a respective M state extensions, where Nc and M are integers greater than 1. Each iteration of the sequence estimation algorithm may comprise extending each of the plurality of possible current states of the signal by its respective Nc possible prior states and its respective M state extensions to generate a respective Nc×M extended states for each of the plurality of possible current states. Each iteration of the sequence estimation algorithm may comprise, for each of the plurality of possible current states of the signal, selecting M of the respective Nc×M extended states to be state extensions for a next iteration of the sequence estimation algorithm.Type: GrantFiled: December 9, 2014Date of Patent: November 17, 2015Assignee: MagnaCom Ltd.Inventors: Daniel Stopler, Amir Eliaz