Patents Assigned to Coherent Technologies
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Patent number: 10209477Abstract: A micro-optics assembly and a method for assembling the micro-optics assembly are provided. The micro-optics assembly may include an optical bench having an opening, a cylindrical body disposed in the opening and having a solder well, a heating element thermally coupled to the solder well, and an optical element. The optical element may include a frame having a post and a micro-optic mounted in the frame. The post may be secured in a solid solder material disposed within the solder well in the cylindrical body. The solder may be reflowable such that the micro-optics assembly is reconfigurable without the need for optical realignment components permanently mounted to the optical bench.Type: GrantFiled: May 25, 2017Date of Patent: February 19, 2019Assignee: Lockheed Martin Coherent Technologies, Inc.Inventors: David Hwang, Andrew Jonathan Gleason, Michael L. Tartaglia
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Patent number: 10158394Abstract: An alternative method of data communications using orthogonal time frequency shifting (OTFS) wireless waveforms configured so as to transmit data in a manner that is relatively insensitive to communications channel distortions and frequency shifts. In contrast to prior methods taught by applicant, the present disclosure teaches an alternative modulation scheme that maps data symbols intended for data transmission onto a symplectic-like 2D Fourier transform which operates on a form of the original data symbols. This 2D Fourier transform in turn is passed through a filter bank of narrow band filters, and the output in turn used to modulate transmitted waveforms according to various time slices until the entire 2D Fourier transform has been transmitted. At the receiver, and inverse of this process can be used to both characterize the data channel and correct the received signals for channel distortions, thus receiving a clear form of the original data symbols.Type: GrantFiled: May 11, 2016Date of Patent: December 18, 2018Assignee: Cohere Technologies, Inc.Inventors: Ronny Hadani, Shlomo Selim Rakib
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Patent number: 10098092Abstract: A wireless telecommunications system that mitigates infrasymbol interference due to Doppler-shift and multipath and enables multiple access in one radio channel. Embodiments of the present invention are particularly advantageous for wireless telecommunications systems that operate in high-mobility environments, including high-speed trains and airplanes.Type: GrantFiled: January 19, 2017Date of Patent: October 9, 2018Assignee: Cohere Technologies, Inc.Inventors: Shlomo Rakib, Ron Hadani
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Publication number: 20180288809Abstract: Methods, devices and systems for generating physical random access channel sequences that can be used to efficiently access a wireless network are disclosed. One exemplary method of accessing a wireless network includes generating a repeated orthogonal sequence by repeating a base orthogonal sequence, generating a random access sequence by applying a window function to the repeated orthogonal sequence, and accessing the wireless network using a random access procedure by selectively using the random access sequence. In an example, the base orthogonal sequence may be a Zadoff-Chu sequence. In another example, the window function may be a root-Hamming window.Type: ApplicationFiled: March 27, 2018Publication date: October 4, 2018Applicant: Cohere Technologies, Inc.Inventors: James Delfeld, Ronny Hadani, Konstantinos Dimou
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Patent number: 10064074Abstract: Computerized wireless transmitter/receiver system that automatically uses combinations of various methods, including transmitting data symbols by weighing or modulating a family of time shifted and frequency shifted waveforms bursts, pilot symbol methods, error detection methods, MIMO methods, and other methods, to automatically determine the structure of a data channel, and automatically compensate for signal distortions caused by various structural aspects of the data channel, as well as changes in channel structure. Often the data channel is a two or three dimensional space in which various wireless transmitters, receivers and signal reflectors are moving. The invention's modulation methods detect locations and speeds of various reflectors and other channel impairments. Error detection schemes, variation of modulation methods, and MIMO techniques further detect and compensate for impairments.Type: GrantFiled: April 11, 2017Date of Patent: August 28, 2018Assignee: Cohere Technologies, Inc.Inventors: Shlomo Selim Rakib, Ronny Hadani
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Publication number: 20180242170Abstract: 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 OTFS 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 OTFS data transmission methods.Type: ApplicationFiled: January 4, 2018Publication date: August 23, 2018Applicant: Cohere TechnologiesInventors: Ronny Hadani, Shlomo Selim Rakib
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Publication number: 20180227159Abstract: A system and method for orthogonal time frequency space communication and waveform generation. The method includes receiving a plurality of information symbols and encoding an N×M array containing the plurality of information symbols into a two-dimensional array of modulation symbols by spreading each of the plurality of information symbols with respect to both time and frequency. The two-dimensional array of modulation symbols is then transmitted using M mutually orthogonal waveforms included within M frequency sub-bands.Type: ApplicationFiled: June 27, 2016Publication date: August 9, 2018Applicant: Cohere Technologies, Inc.Inventors: Shlomo Selim RAKIB, Ronny HADANI
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Patent number: 10034184Abstract: 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 OTFS 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 OTFS data transmission methods.Type: GrantFiled: May 24, 2017Date of Patent: July 24, 2018Assignee: Cohere Technologies, Inc.Inventors: Ronny Hadani, Shlomo Selim Rakib
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Publication number: 20180167165Abstract: A wireless communication method for transmitting wireless signals from a transmitter includes receiving information bits for transmission, segmenting the information bits into a stream of segments, applying a corresponding forward error correction (FEC) code and an interleaver to each of the stream of segments and combining outputs of the interleaving to generate a stream of symbols, processing the stream of symbols to generate a waveform, and transmitting the waveform over a communication medium.Type: ApplicationFiled: February 6, 2018Publication date: June 14, 2018Applicant: Cohere TechnologiesInventors: Shachar Kons, Ronny Hadani, Christian Ibars Casas
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Publication number: 20180109284Abstract: An alternative method of data communications using orthogonal time frequency shifting (OTFS) wireless waveforms configured so as to transmit data in a manner that is relatively insensitive to communications channel distortions and frequency shifts. In contrast to prior methods taught by applicant, the present disclosure teaches an alternative modulation scheme that maps data symbols intended for data transmission onto a symplectic-like 2D Fourier transform which operates on a form of the original data symbols. This 2D Fourier transform in turn is passed through a filter bank of narrow band filters, and the output in turn used to modulate transmitted waveforms according to various time slices until the entire 2D Fourier transform has been transmitted. At the receiver, and inverse of this process can be used to both characterize the data channel and correct the received signals for channel distortions, thus receiving a clear form of the original data symbols.Type: ApplicationFiled: May 11, 2016Publication date: April 19, 2018Applicant: Cohere TechnologiesInventors: Ronny Hadani, Selim Rakib Shlomo
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Patent number: 9867065Abstract: 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 OTFS 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 OTFS data transmission methods.Type: GrantFiled: September 12, 2016Date of Patent: January 9, 2018Assignee: Cohere TechnologiesInventors: Ronny Hadani, Shlomo Selim Rakib
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Patent number: 9819519Abstract: A wireless telecommunications system that mitigates infra-symbol interference due to Doppler-shift and multipath. Embodiments of the present invention are particularly advantageous for wireless telecommunications systems that operate in high-mobility environments, including high-speed trains and airplanes.Type: GrantFiled: January 19, 2017Date of Patent: November 14, 2017Assignee: Cohere Technologies, Inc.Inventors: Shlomo Rakib, Ron Hadani
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Publication number: 20170289961Abstract: A wireless telecommunications system that mitigates infrasymbol interference due to Doppler-shift and multipath and enables multiple access in one radio channel. Embodiments of the present invention are particularly advantageous for wireless telecommunications systems that operate in high-mobility environments, including high-speed trains and airplanes.Type: ApplicationFiled: January 19, 2017Publication date: October 5, 2017Applicant: Cohere Technologies, Inc.Inventors: Shlomo Rakib, Ron Hadani
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Publication number: 20170288913Abstract: A wireless telecommunications system that mitigates infra-symbol interference due to Doppler-shift and multipath. Embodiments of the present invention are particularly advantageous for wireless telecommunications systems that operate in high-mobility environments, including high-speed trains and airplanes.Type: ApplicationFiled: January 19, 2017Publication date: October 5, 2017Applicant: Cohere Technologies, Inc.Inventors: Shlomo Rakib, Ron Hadani
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Patent number: 9722741Abstract: A wireless telecommunications system that mitigates infrasymbol interference due to Doppler-shift and multipath and enables multiple access in one radio channel. Embodiments of the present invention are particularly advantageous for wireless telecommunications systems that operate in high-mobility environments, including high-speed trains and airplanes.Type: GrantFiled: July 20, 2016Date of Patent: August 1, 2017Assignee: Cohere Technologies, Inc.Inventors: Shlomo Rakib, Ron Hadani
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Patent number: 9709668Abstract: A reconfigurable photonic integrated circuit focal plane array (RPIC-FPA) includes detectors and photonic integrated circuit coupled to the detectors that are configured to mix a return signal beam with local oscillator (LO) beams to produce a combined beam and direct the combined beam to the detectors. The LO beams have reconfigurable optical properties enabled by the RTIC-FPA. The LO beams are individually addressed to switch the detectors between a direct detection mode and various coherent detection modes based on adjustments to the optical properties of the LO beams. In the coherent detection mode, the controller is configured to mix the return signal beam with the LO beam having adjusted optical properties to produce the combined beam, and, in the direct detection mode, the controller is configured to disable the LO beams based on adjustments to the optical properties and to direct the return signal beam to the detectors without mixing.Type: GrantFiled: March 16, 2016Date of Patent: July 18, 2017Assignee: Lockheed Martin Coherent Technologies, Inc.Inventors: Piotr Konrad Kondratko, Philip Gatt, John Glennon, Brian Carroll Redman, Paul J. M. Suni
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Patent number: 9667307Abstract: A wireless telecommunications system that mitigates infrasymbol interference due to Doppler-shift and multipath. Embodiments of the present invention are particularly advantageous for wireless telecommunications systems that operate in high-mobility environments, including high-speed trains and airplanes.Type: GrantFiled: May 5, 2016Date of Patent: May 30, 2017Assignee: Cohere TechnologiesInventors: Ron Hadani, Shlomo Rakib
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Patent number: 9668148Abstract: 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 OTFS 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 OTFS data transmission methods.Type: GrantFiled: July 21, 2015Date of Patent: May 30, 2017Assignee: Cohere Technologies, Inc.Inventors: Ronny Hadani, Shlomo Selim Rakib
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Patent number: 9634719Abstract: Computerized wireless transmitter/receiver system that automatically uses combinations of various methods, including transmitting data symbols by weighing or modulating a family of time shifted and frequency shifted waveforms bursts, pilot symbol methods, error detection methods, MIMO methods, and other methods, to automatically determine the structure of a data channel, and automatically compensate for signal distortions caused by various structural aspects of the data channel, as well as changes in channel structure. Often the data channel is a two or three dimensional space in which various wireless transmitters, receivers and signal reflectors are moving. The invention's modulation methods detect locations and speeds of various reflectors and other channel impairments. Error detection schemes, variation of modulation methods, and MIMO techniques further detect and compensate for impairments.Type: GrantFiled: July 21, 2015Date of Patent: April 25, 2017Assignee: Cohere Technologies, Inc.Inventors: Shlomo Selim Rakib, Ronny Hadani
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Patent number: 9581967Abstract: A holography imaging system includes a first laser, a second laser, a transmitter optical system, a receiver optical system, and a detector array. The first laser has a constant frequency, and the second laser has a non-constant frequency. The transmitter optical system can illuminate a target simultaneously using portions of the first and second laser signals. The receiver optical system can focus a returned light onto the detector array. A first and second illumination point sources can direct portions of the first and second laser signals onto the detector array. The first and second illumination point sources are located in-plane with a pupil of the receiver optical system. The system can detect simultaneously holograms formed on the detector array based on the returned light and the portions of the first and second laser signals directed by the first and second illumination point sources.Type: GrantFiled: January 7, 2015Date of Patent: February 28, 2017Assignee: Lockheed Martin Coherent Technologies, Inc.Inventor: Brian Krause