Patents by Inventor Yukitoshi Sanada
Yukitoshi Sanada 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: 11784867Abstract: A communication device includes an acquisition unit that acquires a bit sequence, and a conversion unit that converts the bit sequence to a predetermined complex constellation point sequence including a plurality of complex constellation points including a non-zero complex constellation point and a zero complex constellation point. At least one of the predetermined complex constellation point sequences is a first complex constellation point sequence in which each of a plurality of complex constellation points constituting the complex constellation point sequence is converted to any complex constellation point or zero complex constellation point of a first signal constellation including non-power of two number of complex constellation points. The conversion unit converts one of the bit sequences to at least the first complex constellation point sequence.Type: GrantFiled: August 6, 2020Date of Patent: October 10, 2023Assignee: SONY GROUP CORPORATIONInventors: Ryota Kimura, Hiroki Matsuda, Yukitoshi Sanada
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Publication number: 20220385523Abstract: A communication device includes an acquisition unit that acquires a bit sequence, and a conversion unit that converts the bit sequence to a predetermined complex constellation point sequence including a plurality of complex constellation points including a non-zero complex constellation point and a zero complex constellation point. At least one of the predetermined complex constellation point sequences is a first complex constellation point sequence in which each of a plurality of complex constellation points constituting the complex constellation point sequence is converted to any complex constellation point or zero complex constellation point of a first signal constellation including non-power of two number of complex constellation points. The conversion unit converts one of the bit sequences to at least the first complex constellation point sequence.Type: ApplicationFiled: August 6, 2020Publication date: December 1, 2022Inventors: RYOTA KIMURA, HIROKI MATSUDA, YUKITOSHI SANADA
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Patent number: 11451273Abstract: A mechanism of modulation in a more appropriate spatial domain is to be provided. A transmission device includes a signal processing unit that applies a precoding matrix on the basis of a first bit sequence to a complex signal point sequence converted from a second bit sequence, and the precoding matrix applied to the complex signal point sequence corresponds to the first bit sequence in a predetermined combination of a first bit sequence candidate and each element of a set of precoding matrices.Type: GrantFiled: March 7, 2019Date of Patent: September 20, 2022Assignee: SONY CORPORATIONInventors: Ryota Kimura, Hiroki Matsuda, Yukitoshi Sanada
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Patent number: 11310091Abstract: A transmission device includes a transmitter having circuitry that converts a first-type bit sequence and a second-type bit sequence into a complex signal point sequence. Each of a plurality of complex signal points included in the complex signal point sequence represents an element of one of a plurality of complex signal point sets. In the complex signal point sequence, the applicable patterns of the plurality of complex signal point sets correspond to the first-type bit sequence in a plurality of predetermined combinations of candidates for the first-type bit sequence and the applicable patterns. Each complex signal point included in the complex signal point sequence corresponds to the second-type bit sequence.Type: GrantFiled: January 30, 2019Date of Patent: April 19, 2022Assignee: SONY CORPORATIONInventors: Ryota Kimura, Hiroki Matsuda, Yukitoshi Sanada
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Patent number: 11212025Abstract: [Object] Provided is a mechanism for enhancing resistance against an interference that possibly occur due to non-orthogonality of a resource in a communication system holding communication with a mixture of a plurality of communication parameter sets. [Solving Means] A transmitting apparatus holding communication using a plurality of communication parameter sets in a unit resource, and including a processing section that transmits a data signal and a reference signal generated using the parameter sets different between the data signal and the reference signal to a receiving apparatus.Type: GrantFiled: March 14, 2018Date of Patent: December 28, 2021Assignee: SONY CORPORATIONInventors: Ryota Kimura, Hiroki Matsuda, Naoki Kusashima, Yifu Tang, Yukitoshi Sanada
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Publication number: 20210152272Abstract: [Object] Provided is a mechanism for enhancing resistance against an interference that possibly occur due to non-orthogonality of a resource in a communication system holding communication with a mixture of a plurality of communication parameter sets. [Solving Means] A transmitting apparatus holding communication using a plurality of communication parameter sets in a unit resource, and including a processing section that transmits a data signal and a reference signal generated using the parameter sets different between the data signal and the reference signal to a receiving apparatus.Type: ApplicationFiled: March 14, 2018Publication date: May 20, 2021Inventors: RYOTA KIMURA, HIROKI MATSUDA, NAOKI KUSASHIMA, YIFU TANG, YUKITOSHI SANADA
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Publication number: 20210119849Abstract: [Problem] To proposed a modulation mechanism for enabling achieving further enhancement in the resource efficiency. [Solution] A transmission device includes a converting unit that converts a first-type bit sequence and a second-type bit sequence into a complex signal point sequence. Each of a plurality of complex signal points included in the complex signal point sequence represents an element of one of a plurality of complex signal point sets. In the complex signal point sequence, the applicable patterns of the plurality of complex signal point sets correspond to the first-type bit sequence in a plurality of predetermined combinations of candidates for the first-type bit sequence and the applicable patterns. Each complex signal point included in the complex signal point sequence corresponds to the second-type bit sequence.Type: ApplicationFiled: January 30, 2019Publication date: April 22, 2021Applicant: Sony CorporationInventors: Ryota KIMURA, Hiroki MATSUDA, Yukitoshi SANADA
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Publication number: 20210021308Abstract: A mechanism of modulation in a more appropriate spatial domain is to be provided. A transmission device includes a signal processing unit that applies a precoding matrix on the basis of a first bit sequence to a complex signal point sequence converted from a second bit sequence, and the precoding matrix applied to the complex signal point sequence corresponds to the first bit sequence in a predetermined combination of a first bit sequence candidate and each element of a set of precoding matrices.Type: ApplicationFiled: March 7, 2019Publication date: January 21, 2021Applicant: Sony CorporationInventors: Ryota KIMURA, Hiroki MATSUDA, Yukitoshi SANADA
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Patent number: 10805930Abstract: [Object] To provide a mechanism capable of accommodating legacy terminals not supporting GFDM in addition to terminals supporting GFDM when GFDM is introduced. [Solution] A device includes: a setting unit configured to variably set at least one of an interval between subcarriers and a time length of a subsymbol included in a unit resource constituted by one or more subcarriers or one or more subsymbols; and a transmission processing unit configured to perform filtering for every predetermined number of subcarriers.Type: GrantFiled: April 30, 2019Date of Patent: October 13, 2020Assignee: SONY CORPORATIONInventors: Ryota Kimura, Ryo Sawai, Yukitoshi Sanada, Hiroki Matsuda
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Patent number: 10505771Abstract: An apparatus that can make a success of demodulation on the reception side even if the restrictions on the resource setting are lifted. The apparatus includes: a processing unit configured to variably set at least any of a number of subcarriers or a number of subsymbols included in a unit resource including one or more subcarriers or one or more subsymbols, and set a filter coefficient that is applied in accordance with different rules which depend on whether the number of subsymbols included in the unit resource is an even number or an odd number.Type: GrantFiled: November 16, 2016Date of Patent: December 10, 2019Assignee: SONY CORPORATIONInventors: Atsushi Yoshizawa, Yukitoshi Sanada, Yuka Enjoji, Yuta Akai
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Publication number: 20190261373Abstract: [Object] To provide a mechanism capable of accommodating legacy terminals not supporting GFDM in addition to terminals supporting GFDM when GFDM is introduced. [Solution] A device includes: a setting unit configured to variably set at least one of an interval between subcarriers and a time length of a subsymbol included in a unit resource constituted by one or more subcarriers or one or more subsymbols; and a transmission processing unit configured to perform filtering for every predetermined number of subcarriers.Type: ApplicationFiled: April 30, 2019Publication date: August 22, 2019Applicant: Sony CorporationInventors: Ryota KIMURA, Ryo SAWAI, Yukitoshi SANADA, Hiroki MATSUDA
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Patent number: 10314040Abstract: [Object] To provide a mechanism capable of accommodating legacy terminals not supporting GFDM in addition to terminals supporting GFDM when GFDM is introduced. [Solution] A device includes: a setting unit configured to variably set at least one of an interval between subcarriers and a time length of a subsymbol included in a unit resource constituted by one or more subcarriers or one or more subsymbols; and a transmission processing unit configured to perform filtering for every predetermined number of subcarriers.Type: GrantFiled: August 24, 2016Date of Patent: June 4, 2019Assignee: SONY CORPORATIONInventors: Ryota Kimura, Ryo Sawai, Yukitoshi Sanada, Hiroki Matsuda
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Publication number: 20190020515Abstract: An apparatus that can make a success of demodulation on the reception side even if the restrictions on the resource setting are lifted. The apparatus includes: a processing unit configured to variably set at least any of a number of subcarriers or a number of subsymbols included in a unit resource including one or more subcarriers or one or more subsymbols, and set a filter coefficient that is applied in accordance with different rules which depend on whether the number of subsymbols included in the unit resource is an even number or an odd number.Type: ApplicationFiled: November 16, 2016Publication date: January 17, 2019Applicant: SONY CORPORATIONInventors: Atsushi YOSHIZAWA, Yukitoshi SANADA, Yuka ENJOJI, Yuta AKAI
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Publication number: 20170374664Abstract: [Object] To provide a mechanism capable of accommodating legacy terminals not supporting GFDM in addition to terminals supporting GFDM when GFDM is introduced. [Solution] A device includes: a setting unit configured to variably set at least one of an interval between subcarriers and a time length of a subsymbol included in a unit resource constituted by one or more subcarriers or one or more subsymbols; and a transmission processing unit configured to perform filtering for every predetermined number of subcarriers.Type: ApplicationFiled: August 24, 2016Publication date: December 28, 2017Applicant: SONY CORPORATIONInventors: Ryota KIMURA, Ryo SAWAI, Yukitoshi SANADA, Hiroki MATSUDA
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Patent number: 8451927Abstract: Improving channel response characteristics between a transmitter and a receiver, in a Multiple-Input-Multiple-Output (MIMO)-system without increasing the number of receiving antennas, by using fractional sampling in a receiver, delaying and transmitting part of plural transmitting signals demodulating data of the plural data series.Type: GrantFiled: June 2, 2009Date of Patent: May 28, 2013Assignee: Keio UniversityInventors: Yukitoshi Sanada, Haruki Higuchi
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Patent number: 8346834Abstract: An information processing device for processing reception signals converted into digital signals, includes: a first conversion unit for executing sampling rate conversion of each of the digital signals to be computed with each tap coefficient of a K'th-order FIR filter; a filter computing unit for executing computation processing of the K'th order FIR filter on K digital signals each of which have been subjected to sampling rate conversion by the first conversion unit; and a control unit for controlling sampling rate conversion of the digital signals by the first conversion unit, and the computation processing of the K'th order FIR filter by the filter computing unit.Type: GrantFiled: November 28, 2007Date of Patent: January 1, 2013Assignee: Sony CorporationInventors: Anas bin Muhamad Bostaman, Hideki Yokoshima, Masayoshi Abe, Yuya Kondo, Yukitoshi Sanada
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Patent number: 7974363Abstract: A receiver supporting a plurality of radio communication systems having different specifications includes a setting unit, a clock generation circuit, a voltage-current conversion amplifier, a switch, integrators, an AD conversion circuit, and a feedback circuit. The setting unit sets a value suitable for a carrier frequency used in one selected radio communication system. The clock generation circuit generates a first clock having a first frequency and a second clock having a second frequency. The conversion amplifier converts an input voltage signal into a current signal. The switch switches between connection and disconnection modes in accordance with the first clock to output the current signal. Each integrator operates in accordance with the second clock and includes two or more switched capacitor circuits and an operational amplifier. The AD conversion circuit converts a signal supplied from the preceding integrator into digital form. The feedback circuit operates in accordance with the second clock.Type: GrantFiled: October 10, 2007Date of Patent: July 5, 2011Assignee: Sony CorporationInventors: Hideki Yokoshima, Masayoshi Abe, Yuya Kondo, Yukitoshi Sanada
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Patent number: 7957476Abstract: A wireless communication apparatus for receiving a packet formed of a signal modulated by OFDM includes the following elements. A band-pass filter extracts an OFDM signal of a desired band. A low-noise amplifier having a gain controlled according to a received-signal intensity amplifies the desired OFDM signal. A frequency converter down-converts the amplified OFDM signal into a baseband signal. An analog-digital converter converts the baseband signal into a digital signal. A first high-pass filter removes a DC offset from the baseband signal corresponding to a predetermined preamble portion of the packet. A frequency-offset estimator estimates a frequency offset from the sample signals constituting the baseband signal from which the DC offset has been removed by the first high-pass filter. A frequency-offset corrector removes the estimated frequency offset from the baseband signal.Type: GrantFiled: May 11, 2007Date of Patent: June 7, 2011Assignee: Sony CorporationInventors: Yukitoshi Sanada, Hideki Yokoshima, Masayoshi Abe, Yuya Kondo, Mamiko Inamori, Kazuyuki Saijo
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Publication number: 20110096818Abstract: This invention provides a multi-carrier system that can separate multi-carrier certainly by improving channel response characteristics between a transmitter and a receiver, in a MIMO system increasing receiving antennas by using a fractional sampling in a receiver. The transmitter delays and transmits a part of plural transmitting signals for a time decided from a magnification of a fractional sampling and a pulse length of a transmitting signal, or a time decided with channel response characteristics from the transmitter that the receiver measured. By this structure, the channel response characteristics of a multi-carrier system are improved.Type: ApplicationFiled: June 2, 2009Publication date: April 28, 2011Applicant: KEIO UNIVERSITYInventors: Yukitoshi Sanada, Haruki Higuchi
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Patent number: 7848723Abstract: An information processing apparatus executes processing based on received information conforming to IEEE 802.11n, and includes: an incident angle measuring unit acquiring a received signal and measuring an incident angle of the received signal's radio wave; a reliability estimating unit estimating reliability of a measurement result of the incident angle, by analyzing a state of occurrence of fading using a relationship between frequency and signal intensity of the received signal; and a processing unit executing or controlling processing utilizing the measurement result of the incident angle. The processing unit executes or controls the processing utilizing the measurement result of the incident angle if the estimating unit judges that the reliability of the measurement result of the incident angle is high, and prohibits the processing utilizing the measurement result of the incident angle if the estimating unit judges that the reliability of the measurement result of the incident angle is low.Type: GrantFiled: August 8, 2007Date of Patent: December 7, 2010Assignee: Sony CorporationInventors: Yoshifumi Nishida, Yukitoshi Sanada