Patents by Inventor Noam Tal
Noam Tal 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: 20200162230Abstract: A cable modem supporting full duplex (FDX) operations. The cable modem includes a transmit circuitry configured to process a transmit signal and a receive circuitry configured to process a receive signal. The receive circuitry includes a switchable analog filter configured to filter the receive signal. The switchable analog filter is configurable for different passband frequencies. The receive circuitry also includes a digital compensation filter configured to compensate a difference in frequency response in a specific frequency band due to switching of the switchable analog filter for a different passband frequency. The cable modem also includes an adjacent channel interference (ACI) cancellation filter and an adjacent leakage interference (ALI) cancellation filter. A digital compensation filter is also used in processing the ACI cancellation signal and the ALI cancellation signal to impose or compensate the difference in frequency response due to the switchable analog filter switching.Type: ApplicationFiled: October 15, 2019Publication date: May 21, 2020Applicant: Intel CorporationInventors: Boaz Kol, Noam Tal, Shaul Shulman, Thushara Hewavithana
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Publication number: 20200119834Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.Type: ApplicationFiled: December 13, 2019Publication date: April 16, 2020Applicant: Intel CorporationInventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
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Patent number: 10491249Abstract: A method and apparatus for cancelling self-interference in a cable network implementing full duplex (FDX). A processor in a cable modem may obtain a frequency response of an echo channel for at least one sub-channel in an FDX band and calculate filter coefficients based on the frequency response, and an interference canceller cancels the self-interference in the downstream signal. The interference canceller includes filters in a digital domain to generate an interference cancellation signal from a reference signal. In another example, the processor may obtain frequency responses of an echo channel for all sub-channels in a FDX band, combine the frequency responses for the FDX band, and generate a channel impulse response for the FDX band from the combined frequency response. The interference canceller may then cancel the self-interference in the downstream signal in an analog domain based on the channel impulse response.Type: GrantFiled: May 14, 2018Date of Patent: November 26, 2019Assignee: Intel CorporationInventors: Thushara Hewavithana, Shaul Shulman, Noam Tal, Boaz Kol, Nathan Goichberg, David Barr
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Patent number: 10341046Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.Type: GrantFiled: April 5, 2017Date of Patent: July 2, 2019Assignee: Intel CorporationInventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
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Publication number: 20190173609Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.Type: ApplicationFiled: October 31, 2018Publication date: June 6, 2019Applicant: Intel CorporationInventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
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Publication number: 20190044555Abstract: A method and apparatus for cancelling self-interference in a cable network implementing full duplex (FDX). A processor in a cable modem may obtain a frequency response of an echo channel for at least one sub-channel in an FDX band and calculate filter coefficients based on the frequency response, and an interference canceller cancels the self-interference in the downstream signal. The interference canceller includes filters in a digital domain to generate an interference cancellation signal from a reference signal. In another example, the processor may obtain frequency responses of an echo channel for all sub-channels in a FDX band, combine the frequency responses for the FDX band, and generate a channel impulse response for the FDX band from the combined frequency response. The interference canceller may then cancel the self-interference in the downstream signal in an analog domain based on the channel impulse response.Type: ApplicationFiled: May 14, 2018Publication date: February 7, 2019Inventors: Thushara Hewavithana, Shaul Shulman, Noam Tal, Boaz Kol, Nathan Goichberg, David Barr
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Patent number: 10158451Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.Type: GrantFiled: October 23, 2017Date of Patent: December 18, 2018Assignee: Intel CorporationInventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
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Publication number: 20180287660Abstract: A cable modem system for discovering interference groups (IGs) includes an infrastructure and a cable modem termination system (CMTS). The infrastructure is for transferring data. The CMTS is configured to initiate generation of test signals by a set of cable modems (CMs), obtain a set of test measurements for the set of CMs, discover interference groups (IGs) of the set of CMs based on the obtained set of test measurements and assign a plurality of upstream and downstream channels for the set of CMs that use orthogonal frequency division multiplexing (OFDM) based on the discovered IGs.Type: ApplicationFiled: March 31, 2017Publication date: October 4, 2018Inventors: Bernard Arambepola, Thushara Hewavithana, Noam Tal, Shaul Shulman
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Publication number: 20180048417Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.Type: ApplicationFiled: October 23, 2017Publication date: February 15, 2018Applicant: Intel CorporationInventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
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Publication number: 20170272201Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.Type: ApplicationFiled: April 5, 2017Publication date: September 21, 2017Applicant: Intel CorporationInventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
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Patent number: 9634795Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.Type: GrantFiled: March 4, 2014Date of Patent: April 25, 2017Assignee: Intel CorporationInventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
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Patent number: 9170968Abstract: Some demonstrative embodiments include devices, systems and methods of multi-channel processing. For example, a multi-channel data processor may process data of a plurality of channels, the multi-channel data processor is to switch from processing a first channel to processing a second channel of the plurality of channels by performing a context switch during a single clock cycle, the context switch including storing first state context corresponding to a processing state of the first channel and loading previously stored second state context corresponding to a processing state of the second channel.Type: GrantFiled: September 27, 2012Date of Patent: October 27, 2015Assignee: INTEL CORPORATIONInventors: Elihay Shalem, Noam Tal, Naor Goldman, Efrat Levy
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Patent number: 8976904Abstract: Methods and systems to vary an erasure slicer threshold based on a measure computed from prior soft and/or hard symbol decisions, identify reliable symbol estimates based on the threshold, identify unreliable symbol estimates for erasure based on the threshold, modify the identified symbol estimates, output the reliable symbol estimates and the modified symbol estimates as erasure slicer decisions, and filter the decisions in a feedback filter of a decision feedback equalizer (DFE). The erasure slicer threshold may be based on signal-to-noise ratio (SNR) or mean-squared-error (MSE). A symbol estimate may be identified for erasure when a coordinate of the corresponding soft decision is within an erasure area defined by the threshold. Symbol modification may include replacing a corresponding coordinate of the symbol estimate with a coordinate of a decision boundary associated with the erasure area.Type: GrantFiled: September 28, 2012Date of Patent: March 10, 2015Assignee: Intel CorporationInventor: Noam Tal
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Publication number: 20140247782Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.Type: ApplicationFiled: March 4, 2014Publication date: September 4, 2014Inventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
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Patent number: 8781052Abstract: A system and method are described to provide a next generation cable gateway/modem based on the DOCSIS standard with a scheme to synchronously combine channels in the physical layer to increase overall bit rates for coaxial cable data transmission. The systems and methods synchronize the counters associated with multiple channels, including continuity counters, at the transmitter to zero and then allow the counters on individual channels to increment individually. At the receiver, individual channel delays of individual channels will be thus recognizable based on the information provided by the counters associated with each channel. A buffer at the receiver is informed and used to individually delay one or more of the multiple channels to marry up continuity counter values. In this manner, the buffer acts to essentially equalize delays in individual channels with the continuity counter representing the mechanism for specifying the individual delays for the separate channels.Type: GrantFiled: June 21, 2012Date of Patent: July 15, 2014Assignee: Intel CorporationInventors: Bernard Arambepola, Shaul Shulman, Naor Goldman, Amos Klimker, Noam Tal
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Publication number: 20140092948Abstract: Methods and systems to vary an erasure slicer threshold based on a measure computed from prior soft and/or hard symbol decisions, identify reliable symbol estimates based on the threshold, identify unreliable symbol estimates for erasure based on the threshold, modify the identified symbol estimates, output the reliable symbol estimates and the modified symbol estimates as erasure slicer decisions, and filter the decisions in a feedback filter of a decision feedback equalizer (DFE). The erasure slicer threshold may be based on signal-to-noise ratio (SNR) or mean-squared-error (MSE). A symbol estimate may be identified for erasure when a coordinate of the corresponding soft decision is within an erasure area defined by the threshold. Symbol modification may include replacing a corresponding coordinate of the symbol estimate with a coordinate of a decision boundary associated with the erasure area.Type: ApplicationFiled: September 28, 2012Publication date: April 3, 2014Inventor: Noam Tal
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Publication number: 20140089555Abstract: Some demonstrative embodiments include devices, systems and methods of multi-channel processing. For example, a multi-channel data processor may process data of a plurality of channels, the multi-channel data processor is to switch from processing a first channel to processing a second channel of the plurality of channels by performing a context switch during a single clock cycle, the context switch including storing first state context corresponding to a processing state of the first channel and loading previously stored second state context corresponding to a processing state of the second channel.Type: ApplicationFiled: September 27, 2012Publication date: March 27, 2014Inventors: Elihay Shalem, Noam Tal, Noar Goldman, Efrat Levy
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Publication number: 20130343501Abstract: A system and method are described to provide a next generation cable gateway/modem based on the DOCSIS standard with a scheme to synchronously combine channels in the physical layer to increase overall bit rates for coaxial cable data transmission. The systems and methods synchronize the counters associated with multiple channels, including continuity counters, at the transmitter to zero and then allow the counters on individual channels to increment individually. At the receiver, individual channel delays of individual channels will be thus recognizable based on the information provided by the counters associated with each channel. A buffer at the receiver is informed and used to individually delay one or more of the multiple channels to many up continuity counter values. In this manner, the buffer acts to essentially equalize delays in individual channels with the continuity counter representing the mechanism for specifying the individual delays for the separate channels.Type: ApplicationFiled: June 21, 2012Publication date: December 26, 2013Inventors: Bernard Arambepola, Shaul Shulman, Naor Goldman, Amos Klimker, Noam Tal
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Publication number: 20120231037Abstract: Articles-of-manufacturing comprising an object having a surface and a therapeutically active agent being deposited onto at least a portion of the surface, while at least a portion of said therapeutically active agent being in a crystalline form thereof are disclosed. Methods utilizing such articles-of-manufacturing for treating medical conditions are also disclosed. Processes of preparing the articles-of-manufacturing by contacting a surface of the object with a solution containing the therapeutically active agent; and cooling the surface to a temperature below a temperature of the solution, and apparatus for performing these processes, are also disclosed.Type: ApplicationFiled: February 1, 2010Publication date: September 13, 2012Applicant: Yissum Research Development Companyof the Hebrew UInventors: Yair Levi, Abraham Jackob Domb, Nir Amir, Nino Eliyahu, Uri Cohn, Noam Tal
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Patent number: 8159377Abstract: A timing skew estimation system is disclosed that includes a plurality of interleaved analog-to-digital converter circuits (ADCs), a timing mismatch estimation unit, and a correction unit. The timing mismatch estimation unit calculates a correlation between each of the plurality of ADCs. Then the timing mismatch estimation unit calculates a cost function for each of the plurality of ADCs, except the reference ADC. The timing mismatch estimation unit further calculates a gradient for each of the plurality of ADCs, except the reference ADC.Type: GrantFiled: August 31, 2010Date of Patent: April 17, 2012Assignee: Texas Instruments IncorporatedInventors: Naor Goldman, Noam Tal, Yonina Eldar, Charles Sestok, Efrat Levy