Patents by Inventor Shlomo Selim Rakib
Shlomo Selim Rakib 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: 11974167Abstract: Methods, systems and devices for distributed cooperative operation of wireless cells based on sparse channel representations are described. One example method includes providing, using a server, seamless wireless connectivity in an area in which a plurality of network nodes are organized as clusters, where each network node is configured to provide wireless connectivity via N angular sectors covering a surrounding area, where N is an integer and wherein angular sectors of the plurality of network nodes collectively cover the area; controlling, by the server, network nodes in a cluster to collect channel condition information for the N angular sectors and communicate the channel condition information to the network-side server, and operating the server to use the channel condition information collected from the network nodes in the cluster to control communication for the network nodes in the cluster at a different time or a different frequency or a different spatial direction.Type: GrantFiled: December 31, 2019Date of Patent: April 30, 2024Assignee: Cohere Technologies, Inc.Inventors: Shachar Kons, Shlomo Selim Rakib, Ronny Hadani
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Patent number: 11968144Abstract: Techniques for performing channel estimation in an orthogonal time, frequency and space (OTFS) communication system include receiving a wireless signal comprising a data signal portion and a pilot signal portion in which the pilot signal portion includes multiple pilot signals multiplexed together in the OTFS domain, performing two-dimensional channel estimation in a time-frequency domain based on a minimum mean square error (MMSE) optimization criterion, and recovering information bits using a channel estimate obtained from the two-dimensional channel estimation.Type: GrantFiled: June 6, 2022Date of Patent: April 23, 2024Assignee: Cohere Technologies, Inc.Inventors: Yoav Hebron, Shlomo Selim Rakib, Ronny Hadani, Michail Tsatsanis, Clayton Ambrose, Jim Delfeld, Robert Fanfelle
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Patent number: 11962373Abstract: A wireless communication device includes a feed port comprising multiple input feeds, a precoding subsystem that is electrically connected to the feed port; and an antenna subsystem electrically connected to the precoding subsystem. The antenna subsystem is configured to transmit an output signal of the precoding subsystem to multiple wireless stations using multiple beams. The precoding subsystem is configured to perform a precoding operation on an input signal from the feed port, wherein the precoding operation maximizes a desired signal level to interference ratio of transmissions to the multiple wireless stations.Type: GrantFiled: September 28, 2020Date of Patent: April 16, 2024Assignee: Cohere Technologies, Inc.Inventors: Shlomo Selim Rakib, Ronny Hadani, Shachar Kons
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Patent number: 11943089Abstract: A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an intermediate data frame. A transformed data matrix is provided by permuting elements of the intermediate data frame. A modulated signal is generated in accordance with elements of the transformed data matrix.Type: GrantFiled: May 24, 2023Date of Patent: March 26, 2024Assignee: Cohere Technologies, Inc.Inventors: Ronny Hadani, Shlomo Selim Rakib
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Publication number: 20240063891Abstract: An airborne RF-head platform system and method. Here, much of the computational burden of transmitting and receiving wireless RF waveforms is shifted from the airborne platform to a ground baseband unit (BBU). The airborne platform, which will often be a high-altitude balloon or drone type platform, generally comprises one or more remote radio heads, configured with antennas, A/D and D/A converters, frequency converters, RF amplifiers, and the like. The airborne platform communicates with the ground baseband units either directly via a laser communications link, or indirectly through another airborne relay platform. The airborne RF-head communicates via various wireless protocols to various user equipment such as smartphones by using the BBU and the laser communications link to precisely control the function of the airborne A/D and D/A converters and antennas. This system reduces the power needs, weight, and cost of the airborne platform, and also improves operational flexibility.Type: ApplicationFiled: November 3, 2023Publication date: February 22, 2024Applicant: Cohere Technologies, Inc.Inventor: Shlomo Selim Rakib
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Publication number: 20240056343Abstract: Device, methods, and systems for implementing aspects of orthogonal time frequency space (OTFS) modulation in wireless systems are described. In an aspect, the device may include a surface of an object for receiving an electromagnetic signal. The surface may be structured to perform a non-electrical function for the object. The surface may generate an electrical signal from an electromagnetic signal. The electromagnetic signal may be received from a transmitter. The transmitter may map digital data to a digital amplitude modulation constellation in a time-frequency space. The digital amplitude modulation constellation may be mapped to a delay-Doppler domain and the transmitter may transmit to the surface according to an orthogonal time frequency space modulation signal scheme. The apparatus may further include a demodulator to demodulate the electrical signal to determine digital data.Type: ApplicationFiled: October 13, 2023Publication date: February 15, 2024Applicant: Cohere Technologies, Inc.Inventors: Seshadri Sathyanarayan, Shlomo Selim Rakib
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Patent number: 11894967Abstract: Orthogonal Time Frequency Space (OTFS) is a novel modulation scheme with significant benefits for 5G systems. The fundamental theory behind OTFS is presented in this paper as well as its benefits. We start with a mathematical description of the doubly fading delay-Doppler channel and develop a modulation that is tailored to this channel. We model the time varying delay-Doppler channel in the time-frequency domain and derive a new domain (the OTFS domain) where we show that the channel is transformed to a time invariant one and all symbols see the same SNR. We explore aspects of the modulation like delay and Doppler resolution, and address design and implementation issues like multiplexing multiple users and evaluating complexity. Finally we present some performance results where we demonstrate the superiority of OTFS.Type: GrantFiled: February 6, 2023Date of Patent: February 6, 2024Assignee: ZTE CorporationInventors: Ronny Hadani, Shlomo Selim Rakib, Anton Monk, Michail Tsatsanis, Yoav Hebron
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Publication number: 20240015725Abstract: Methods, systems, and devices for spectral sharing wireless systems, wherein multiple user devices share time and frequency resources for uplink and/or downlink transmissions, are described. One example wireless communication system includes a network station, and multiple user devices, wherein data transmissions over the same time and frequency resources are shared between multiple user devices, in downlink and/or uplink, using spatial user device separation that is dynamically computed by the network station, and where the network station derives spatial user device separation based on uplink channel measurements.Type: ApplicationFiled: June 15, 2021Publication date: January 11, 2024Inventors: Shlomo Selim RAKIB, Ronny HADANI, Shachar KONS
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Publication number: 20230412444Abstract: A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an intermediate data frame. A transformed data matrix is provided by permuting elements of the intermediate data frame. A modulated signal is generated in accordance with elements of the transformed data matrix.Type: ApplicationFiled: May 24, 2023Publication date: December 21, 2023Inventors: Ronny HADANI, Shlomo Selim RAKIB
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Patent number: 11848810Abstract: Device, methods and systems for implementing aspects of orthogonal time frequency space (OTFS) modulation in wireless systems are described. In an aspect, the device may include a surface of an object for receiving an electromagnetic signal. The surface may be structured to perform a non-electrical function for the object. The surface may generate an electrical signal from an electromagnetic signal. The electromagnetic signal may be received from a transmitter. The transmitter may map digital data to a digital amplitude modulation constellation in a time-frequency space. The digital amplitude modulation constellation may be mapped to a delay-Doppler domain and the transmitter may transmit to the surface according to an orthogonal time frequency space modulation signal scheme. The apparatus may further include a demodulator to demodulate the electrical signal to determine digital data.Type: GrantFiled: November 22, 2021Date of Patent: December 19, 2023Assignee: Cohere Technologies, Inc.Inventors: Seshadri Sathyanarayan, Shlomo Selim Rakib
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Patent number: 11843552Abstract: A fixed wireless access system is implemented using orthogonal time frequency space multiplexing (OTFS). Data transmissions to/from different devices share transmission resources using—delay Doppler multiplexing, time-frequency multiplexing, multiplexing at stream and/or layer level, and angular multiplexing. Time-frequency multiplexing is achieved by dividing the time-frequency plan into subgrids, with the subsampled time frequency grid being used to carry the OTFS data. Antenna implementations include a hemispherical antenna with multiple antenna elements arranged in an array to achieve multiplexing.Type: GrantFiled: January 13, 2023Date of Patent: December 12, 2023Assignee: Cohere Technologies, Inc.Inventors: Shlomo Selim Rakib, Ronny Hadani, Richard Benner, Robert Fanfelle
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Patent number: 11831391Abstract: An airborne RF-head platform system and method. Here, much of the computational burden of transmitting and receiving wireless RF waveforms is shifted from the airborne platform to a ground baseband unit (BBU). The airborne platform, which will often be a high altitude balloon or drone type platform, generally comprises one or more remote radio heads, configured with antennas, A/D and D/A converters, frequency converters, RF amplifiers, and the like. The airborne platform communicates with the ground baseband units either directly via a laser communications link, or indirectly through another airborne relay platform. The airborne RF-head communicates via various wireless protocols to various user equipment such as smartphones by using the BBU and the laser communications link to precisely control the function of the airborne A/D and D/A converters and antennas. This system reduces the power needs, weight, and cost of the airborne platform, and also improves operational flexibility.Type: GrantFiled: December 5, 2022Date of Patent: November 28, 2023Assignee: Cohere Technologies, Inc.Inventor: Shlomo Selim Rakib
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Publication number: 20230336399Abstract: Orthogonal Time Frequency Space (OTFS) is a novel modulation scheme with significant benefits for 5G systems. The fundamental theory behind OTFS is presented in this paper as well as its benefits. We start with a mathematical description of the doubly fading delay-Doppler channel and develop a modulation that is tailored to this channel. We model the time varying delay-Doppler channel in the time-frequency domain and derive a new domain (the OTFS domain) where we show that the channel is transformed to a time invariant one and all symbols see the same SNR. We explore aspects of the modulation like delay and Doppler resolution, and address design and implementation issues like multiplexing multiple users and evaluating complexity. Finally we present some performance results where we demonstrate the superiority of OTFS.Type: ApplicationFiled: February 6, 2023Publication date: October 19, 2023Inventors: Ronny Hadani, Shlomo Selim Rakib, Anton Monk, Michail Tsatsanis, Yoav Hebron
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Publication number: 20230327919Abstract: Fiber, cable, and wireless data channels are typically impaired by reflectors and other imperfections, producing a channel state with echoes and frequency shifts in data waveforms. Here, methods of using pilot symbol waveform bursts to automatically produce a detailed 2D model of the channel state are presented. This 2D channel state can then be used to optimize data transmission. For wireless data channels, an even more detailed 2D model of channel state can be produced by using polarization and multiple antennas in the process. Once 2D channel states are known, the system turns imperfect data channels from a liability to an advantage by using channel imperfections to boost data transmission rates. The methods can be used to improve legacy data transmission modes in multiple types of media, and are particularly useful for producing new types of robust and high capacity wireless communications using non-legacy data transmission methods as well.Type: ApplicationFiled: April 26, 2023Publication date: October 12, 2023Inventors: Ronny HADANI, Shlomo Selim RAKIB
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Publication number: 20230268964Abstract: Methods, systems and devices for wireless communication, which include localization and auto-calibration, are described. One example method includes receiving, at a wireless device, signal transmissions from one or more network devices, and generating, by processing the signal transmissions, a feedback signal for antenna calibration of the one or more network devices. In some embodiments, the antenna calibration is used for performing device localization and feature map generation that is subsequently used for scheduling transmissions in a wireless network.Type: ApplicationFiled: August 2, 2021Publication date: August 24, 2023Inventors: Ronny HADANI, Shlomo Selim RAKIB
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Publication number: 20230246735Abstract: Methods, systems and devices for wireless communication are described. One example method includes determining, using resources in a wireless network, a schedule of transmissions between the wireless network and one or more user devices, and controlling the transmissions according to the schedule. The resources are distributed between a central unit (CU) and a distributed unit (DU) according to a resource partitioning scheme. The DU is configured to handle a first set of protocol layers of a communication protocol stack implemented in the wireless network according to a layer partitioning scheme and the CU is configured to handle a second set of protocol layers of the communication protocol stack according to the layer partitioning scheme. The first set of protocol layers excludes an upper medium access control (MAC) layer. The second set of protocol layers excludes a physical layer.Type: ApplicationFiled: April 4, 2023Publication date: August 3, 2023Inventors: Shlomo Selim Rakib, Shachar KONS, Naveen RAWAT, Paul LIND
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Publication number: 20230231668Abstract: A fixed wireless access system is implemented using orthogonal time frequency space multiplexing (OTFS). Data transmissions to/from different devices share transmission resources using—delay Doppler multiplexing, time-frequency multiplexing, multiplexing at stream and/or layer level, and angular multiplexing. Time-frequency multiplexing is achieved by dividing the time-frequency plan into subgrids, with the subsampled time frequency grid being used to carry the OTFS data. Antenna implementations include a hemispherical antenna with multiple antenna elements arranged in an array to achieve multiplexing.Type: ApplicationFiled: January 13, 2023Publication date: July 20, 2023Inventors: Shlomo Selim Rakib, Ronny Hadani, Richard Benner, Robert Fanfelle
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Patent number: 11665041Abstract: A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an intermediate data frame. A transformed data matrix is provided by permuting elements of the intermediate data frame. A modulated signal is generated in accordance with elements of the transformed data matrix.Type: GrantFiled: June 14, 2021Date of Patent: May 30, 2023Assignee: Cohere Technologies, Inc.Inventors: Ronny Hadani, Shlomo Selim Rakib
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Patent number: 11646844Abstract: A method for signal transmission using precoded symbol information involves estimating a two-dimensional model of a communication channel in a delay-Doppler domain. A perturbation vector is determined in a delay-time domain wherein the delay-time domain is related to the delay-Doppler domain by an FFT operation. User symbols are modified based upon the perturbation vector so as to produce perturbed user symbols. A set of Tomlinson-Harashima precoders corresponding to a set of fixed times in the delay-time domain may then be determined using a delay-time model of the communication channel. Precoded user symbols are generated by applying the Tomlinson-Harashima precoders to the perturbed user symbols. A modulated signal is then generated based upon the precoded user symbols and provided for transmission over the communication channel.Type: GrantFiled: May 24, 2021Date of Patent: May 9, 2023Assignee: Cohere Technologies, Inc.Inventors: Jim Delfeld, Shlomo Selim Rakib
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Patent number: 11646913Abstract: Fiber, cable, and wireless data channels are typically impaired by reflectors and other imperfections, producing a channel state with echoes and frequency shifts in data waveforms. Here, methods of using pilot symbol waveform bursts to automatically produce a detailed 2D model of the channel state are presented. This 2D channel state can then be used to optimize data transmission. For wireless data channels, an even more detailed 2D model of channel state can be produced by using polarization and multiple antennas in the process. Once 2D channel states are known, the system turns imperfect data channels from a liability to an advantage by using channel imperfections to boost data transmission rates. The methods can be used to improve legacy data transmission modes in multiple types of media, and are particularly useful for producing new types of robust and high capacity wireless communications using non-legacy data transmission methods as well.Type: GrantFiled: June 5, 2020Date of Patent: May 9, 2023Assignee: Cohere Technologies, Inc.Inventors: Ronny Hadani, Shlomo Selim Rakib