Patents by Inventor Noriaki Kaneda
Noriaki Kaneda 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: 9148247Abstract: An optical transport system configured to transmit information using two or more modulated optical carriers spaced at spectral intervals that are smaller than the baud rate. An example optical receiver in the optical transport system includes a signal equalizer configured to implement frequency-diversity multiple-input/multiple-output signal processing directed at canceling the effects of inter-carrier interference caused by the spectral overlap between adjacent modulated optical carriers to enable the optical receiver to recover individual data streams encoded onto the different modulated optical carriers at the corresponding optical transmitter(s). Some embodiments of the optical transport system may advantageously be capable of achieving a higher spectral efficiency than the spectral efficiency supported by the optical orthogonal-frequency-division-multiplexing transmission format.Type: GrantFiled: September 20, 2013Date of Patent: September 29, 2015Assignee: Alcatel LucentInventor: Noriaki Kaneda
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Patent number: 9147939Abstract: At least one example embodiment discloses an antenna system. The antenna system includes a single printed circuit board (PCB) substrate and an antenna integrated with the single PCB substrate, the antenna being a broadside low-profile microstrip antenna.Type: GrantFiled: March 29, 2013Date of Patent: September 29, 2015Assignee: Alcatel LucentInventors: Noriaki Kaneda, Shahriar Shahramian, Yves Baeyens, Young-Kai Chen
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Patent number: 9083071Abstract: An electrical device that comprises a tunable cavity filter that includes a container and a post. The container encloses a cavity therein, wherein interior surfaces of the container are covered with a metal layer. The post is configured be movable through an opening in the container such that at least a portion of the post is locatable inside of the cavity.Type: GrantFiled: January 4, 2011Date of Patent: July 14, 2015Assignee: Alcatel LucentInventors: Noriaki Kaneda, John Franey
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Patent number: 9048950Abstract: An approach is provided that uses diversity to compensate fading of free-space optical (FSO) signals propagating through an environment characterized by atmospheric scintillation. One embodiment involves collecting at least one FSO beam, demultiplexing the beam by wavelength into at least two sub-beams, detecting each sub-beam to produce an electrical output therefrom, and recovering a signal using complementary information from at least two of the electrical outputs. Another embodiment involves collecting the FSO beam onto an array of spatially separated sub-apertures, detecting the light entering each sub-aperture to produce an electrical output therefrom, and recovering a signal using complementary information from at least two of the electrical outputs. This second embodiment enables both electronic adaptive processing to coherently integrate across the sub-apertures and in the case of multiple transmit apertures a free space optical Multiple Input Multiple Output (MIMO) system.Type: GrantFiled: October 29, 2010Date of Patent: June 2, 2015Assignee: LGS INNOVATIONS LLCInventors: Young-kai Chen, Noriaki Kaneda, Alex Pidwerbetsky
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Patent number: 9036999Abstract: One aspect provides an optical communication system. The system includes an optical-to-digital converter, a frequency estimator and a symbol synchronizer. The optical-to-digital converter is configured to receive an optical OFDM bit stream including an OFDM symbol bearing payload data and a symbol header preceding the OFDM payload data. The frequency estimator is configured to determine a carrier frequency offset of the payload data from the symbol header. The symbol synchronizer is configured to determine a starting location of the payload data within the bit stream by cross-correlating a synchronization pattern within the symbol header with a model synchronization pattern stored by the symbol synchronizer.Type: GrantFiled: July 29, 2011Date of Patent: May 19, 2015Assignee: Alcatel LucentInventors: Noriaki Kaneda, Timo Pfau, Qi Yang
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Patent number: 9013252Abstract: A dielectric-loaded cavity resonator has a conductive (e.g., copper) box defining a cavity and a dielectric (e.g., ceramic) resonator mounted within the box. The dielectric resonator has a cylindrical dielectric post and first and second dielectric pedestals respectively connected to the ends of the post and having lateral dimensions greater than the diameter of the post. Insulating (e.g., PTFE) pads are mounted onto outer surfaces of the pedestals to provide air gaps between the pedestals and corresponding top and bottom walls of the box. In certain embodiments, the pedestals have rectilinear, 3D shapes completely or only partially covering the top and bottom walls of the cavity, while, in other embodiments, the pedestals have cylindrical shapes maximally or less than maximally covering the top and bottom walls of the cavity.Type: GrantFiled: October 23, 2013Date of Patent: April 21, 2015Assignee: Alcatel LucentInventors: Tsu-Wei Lin, Noriaki Kaneda
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Patent number: 8995834Abstract: An apparatus, e.g. an optical receiver, includes an optical front end and an equalizer. The front end is configured for receiving an optical signal bearing first and second symbols on respective first and second polarization channels. The equalizer is configured to 1) select a first cost function if the first symbol has greater energy than the second symbol, 2) select a second different cost function if the second symbol has a greater energy than the first symbol, and 3) based on the selected cost function, update coefficients of an adaptive filter configured to demultiplex and equalize the first and second polarization channels.Type: GrantFiled: December 22, 2011Date of Patent: March 31, 2015Assignee: Alcatel LucentInventors: Brian Krongold, Timo Pfau, Noriaki Kaneda
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Publication number: 20150086204Abstract: An optical transport system configured to transmit information using two or more modulated optical carriers spaced at spectral intervals that are smaller than the baud rate. An example optical receiver in the optical transport system includes a signal equalizer configured to implement frequency-diversity multiple-input/multiple-output signal processing directed at canceling the effects of inter-carrier interference caused by the spectral overlap between adjacent modulated optical carriers to enable the optical receiver to recover individual data streams encoded onto the different modulated optical carriers at the corresponding optical transmitter(s). Some embodiments of the optical transport system may advantageously be capable of achieving a higher spectral efficiency than the spectral efficiency supported by the optical orthogonal-frequency-division-multiplexing transmission format.Type: ApplicationFiled: September 20, 2013Publication date: March 26, 2015Applicant: ALCATEL-LUCENT USA INC.Inventor: Noriaki Kaneda
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Patent number: 8983294Abstract: An optical transport system that transmits data using relatively short FEC-encoded data frames. The corresponding modulated optical signals are decoded at an optical receiver using frame-based maximum likelihood sequence estimation that relies on data redundancy present in each FEC-encoded data frame for the determination of its source bits. In some embodiments, the modulated optical signals carrying the FEC-encoded data frames are generated using a polarization-division-multiplexed constellation. The FEC-coding rate and frame length can be adjusted without changing the constellation, which advantageously enables the optical transport system to dynamically adapt its transmission format to the changing link conditions in a manner that results in better overall receiver sensitivity than that achieved with comparable bit-rate-adaptation methods that rely on a constellation change rather than on a change of the FEC-coding rate.Type: GrantFiled: June 29, 2012Date of Patent: March 17, 2015Assignee: Alcatel LucentInventors: Timo J. Pfau, Noriaki Kaneda, Brian S. Krongold
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Publication number: 20140369392Abstract: In one example embodiment, a communication system includes a remote unit configured to convert a plurality of signals, received at the remote unit from a plurality of end devices, into a plurality of first digital signals regardless of a bandwidth occupied by any of the plurality of signals. The communication system further includes a central unit configured to generate a plurality of second digital signals by processing the plurality of first digital signals received from the remote unit and transmit the plurality of second digital signals back to the remote unit, to be transmitted to the plurality of end devices.Type: ApplicationFiled: June 13, 2013Publication date: December 18, 2014Applicant: ALCATEL-LUCENT USA INC.Inventors: Sian Chong LEE, Noriaki KANEDA
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Publication number: 20140356003Abstract: An optical receiver having an electronic dispersion-compensation module with two parallel signal-processing branches configured to provide a greater range of dispersion compensation than that provided by a prior-art device of comparable implementation complexity. In an example embodiment, each of the signal-processing branches includes a respective bank of finite-impulse-response filters that are configured in accordance with a different respective approximation of the group delay that needs to be compensated. The two group-delay approximations used by the filter banks rely on different respective step functions, each having a respective plurality of quantized steps, with the transitions between adjacent steps in one step function being spectrally aligned with the flat portions of the corresponding steps in the other step function.Type: ApplicationFiled: January 14, 2014Publication date: December 4, 2014Applicant: ALCATEL-LUCENTInventors: Sebastian A. Randel, Fabian N. Hauske, Noriaki Kaneda
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Patent number: 8903238Abstract: A system, e.g. for optical communication, includes an I-Q modulator and a transmission signal processor. The I-Q modulator is configured to modulate a first light source in response to first I and Q modulation signals. The transmission signal processor is configured to receive a data stream including data corresponding to a first data subchannel. The processor maps the data subchannel to an optical transmission subchannel and outputs the first I and Q modulation signals. The I and Q modulation signals modulate the light source to produce an optical transmission signal that includes wavelength components corresponding to the optical transmission subchannel.Type: GrantFiled: September 10, 2012Date of Patent: December 2, 2014Assignee: Alcatel LucentInventors: Timo J. Pfau, Noriaki Kaneda, Young-Kai Chen
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Publication number: 20140292604Abstract: At least one example embodiment discloses an antenna system. The antenna system includes a single printed circuit board (PCB) substrate and an antenna integrated with the single PCB substrate, the antenna being a broadside low-profile microstrip antenna.Type: ApplicationFiled: March 29, 2013Publication date: October 2, 2014Applicant: Alcatel-Lucent USA Inc.Inventors: Noriaki KANEDA, Shahriar SHAHRAMIAN, Yves BAEYENS, Young-Kai CHEN
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Publication number: 20140199063Abstract: An optical receiver having an optical IQ modulator configured to generate an optical local-oscillator (OLO) signal for optical homodyne detection of an optical input signal applied to the optical receiver. The optical receiver further has (i) a phase detector configured to generate an electrical measure of the phase difference between the OLO signal and a carrier wave of the optical input signal and (ii) a phase-lock loop configured to drive the optical IQ modulator using the electrical measure. In an embodiment, the phase detector is configured to generate the electrical measure using both I and Q components of the homodyne-detected signal and in a manner that enables the optical receiver to be compatible with the M-QAM modulation format.Type: ApplicationFiled: January 17, 2013Publication date: July 17, 2014Applicant: Alcatel-Lucent USA Inc.Inventor: Noriaki Kaneda
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Publication number: 20140199068Abstract: An optical receiver having a plurality of optical IQ modulators arranged in a butterfly configuration and configured to operate as an optical polarization de-multiplexer. The optical receiver further has (i) an opto-electric circuit configured to apply optical homodyne detection to an optical input signal received by the optical receiver and (ii) a controller configured to generate one or more control signals for driving the IQ modulators of the plurality based on one or more electrical feedback signals received from the opto-electric circuit.Type: ApplicationFiled: January 17, 2013Publication date: July 17, 2014Applicant: Alcatel-Lucent USA Inc.Inventor: Noriaki Kaneda
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Publication number: 20140072303Abstract: A system, e.g. for optical communication, includes an I-Q modulator and a transmission signal processor. The I-Q modulator is configured to modulate a first light source in response to first I and Q modulation signals. The transmission signal processor is configured to receive a data stream including data corresponding to a first data subchannel. The processor maps the data subchannel to an optical transmission subchannel and outputs the first I and Q modulation signals. The I and Q modulation signals modulate the light source to produce an optical transmission signal that includes wavelength components corresponding to the optical transmission subchannel.Type: ApplicationFiled: September 10, 2012Publication date: March 13, 2014Applicant: Alcatel-Lucent USA, Inc.Inventors: Timo J. Pfau, Noriaki Kaneda, Young-Kai Chen
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Publication number: 20140070999Abstract: An apparatus includes a dielectric slab having first and opposing second major surfaces. A planar antenna element is located on the first major surface. A via formed through the dielectric slab is conductively connected to the antenna element. A plurality of solder bump pads is located on the second major surface and is configured to attach the dielectric slab to an integrated circuit.Type: ApplicationFiled: September 11, 2012Publication date: March 13, 2014Applicant: Alcatel-Lucent USA, Inc.Inventors: Noriaki Kaneda, Nagesh Basavanhally, Yves Baeyens, Young-Kai Chen, Shahriar Shahramian
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Patent number: 8655191Abstract: A method, apparatus and system for providing clock and data recovery in a receiver for receiving a high speed coherent polarization division multiplexed optical signal using a digital signal processing block including a spectral domain spatial combiner are provided.Type: GrantFiled: June 29, 2009Date of Patent: February 18, 2014Assignee: Alcatel LucentInventors: Noriaki Kaneda, Andreas B. Leven, Stefan Weisser
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Publication number: 20140003813Abstract: An optical transport system that transmits data using relatively short FEC-encoded data frames. The corresponding modulated optical signals are decoded at an optical receiver using frame-based maximum likelihood sequence estimation that relies on data redundancy present in each FEC-encoded data frame for the determination of its source bits. In some embodiments, the modulated optical signals carrying the FEC-encoded data frames are generated using a polarization-division-multiplexed constellation. The FEC-coding rate and frame length can be adjusted without changing the constellation, which advantageously enables the optical transport system to dynamically adapt its transmission format to the changing link conditions in a manner that results in better overall receiver sensitivity than that achieved with comparable bit-rate-adaptation methods that rely on a constellation change rather than on a change of the FEC-coding rate.Type: ApplicationFiled: June 29, 2012Publication date: January 2, 2014Applicant: ALCATEL-LUCENT USA INC.Inventors: Timo J. Pfau, Noriaki Kaneda, Brian S. Krongold
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Publication number: 20130163988Abstract: An apparatus, e.g. an optical receiver, includes an optical front end and an equalizer. The front end is configured for receiving an optical signal bearing first and second symbols on respective first and second polarization channels. The equalizer is configured to 1) select a first cost function if the first symbol has greater energy than the second symbol, 2) select a second different cost function if the second symbol has a greater energy than the first symbol, and 3) based on the selected cost function, update coefficients of an adaptive filter configured to demultiplex and equalize the first and second polarization channels.Type: ApplicationFiled: December 22, 2011Publication date: June 27, 2013Applicant: Alcatel-Lucent USA, Inc.Inventors: Brian Krongold, Timo Pfau, Noriaki Kaneda