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公开(公告)号：US11923871B2
公开(公告)日：2024-03-05
申请号：US17341875
申请日：2021-06-08
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
CPC classification number: H03M13/255 , H03M13/1102 , H03M13/1111 , H03M13/19 , H03M13/35 , H03M13/6362 , H04L1/00
Abstract: One coding scheme is selected from a plurality of coding schemes, an information sequence is encoded by using the selected coding scheme, and an obtained encoded sequence is modulated to obtain a modulated signal. The obtained modulated signal is subjected to a phase change and is transmitted. The plurality of coding schemes include at least a first coding scheme and a second coding scheme. The first coding scheme is a coding scheme with a first coding rate for forming a generated first codeword as a first encoded sequence by using a first parity check matrix. The second coding scheme is a coding scheme with a second coding rate obtained after puncturing processing, for generating a second encoded sequence by performing the puncturing processing on a generated second codeword by using a second parity check matrix different from the first parity check matrix. The number of bits of the first encoded sequence is equal to the number of bits of the second encoded sequence.
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公开(公告)号：US11063609B2
公开(公告)日：2021-07-13
申请号：US16801234
申请日：2020-02-26
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
Abstract: One coding scheme is selected from a plurality of coding schemes, an information sequence is encoded by using the selected coding scheme, and an obtained encoded sequence is modulated to obtain a modulated signal. The obtained modulated signal is subjected to a phase change and is transmitted. The plurality of coding schemes include at least a first coding scheme and a second coding scheme. The first coding scheme is a coding scheme with a first coding rate for forming a generated first codeword as a first encoded sequence by using a first parity check matrix. The second coding scheme is a coding scheme with a second coding rate obtained after puncturing processing, for generating a second encoded sequence by performing the puncturing processing on a generated second codeword by using a second parity check matrix different from the first parity check matrix. The number of bits of the first encoded sequence is equal to the number of bits of the second encoded sequence.
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公开(公告)号：US10666386B2
公开(公告)日：2020-05-26
申请号：US16261881
申请日：2019-01-30
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
Abstract: One coding method is selected from a plurality of coding methods per data symbol group, an information sequence is encoded by using the selected coding method. The plurality of coding methods includes at least a first coding method and a second coding method. The first coding method is a coding method with a first coding rate for generating a first codeword as a first encoded sequence by using a first parity check matrix. The second coding method is a coding method with a second coding rate different from the first coding rate and obtained after puncturing processing, where a second encoded sequence is generated by performing the puncturing processing on a second codeword by using a second parity check matrix different from the first parity check matrix. A number of bits of the first encoded sequence is equal to a number of bits of the second encoded sequence.
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Patent Agency Ranking
公开(公告)号：US10237015B2
公开(公告)日：2019-03-19
申请号：US15284601
申请日：2016-10-04
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
Abstract: One coding method is selected from a plurality of coding methods per data symbol group, an information sequence is encoded by using the selected coding method. The plurality of coding methods includes at least a first coding method and a second coding method. The first coding method is a coding method with a first coding rate for generating a first codeword as a first encoded sequence by using a first parity check matrix. The second coding method is a coding method with a second coding rate different from the first coding rate and obtained after puncturing processing, where a second encoded sequence is generated by performing the puncturing processing on a second codeword by using a second parity check matrix different from the first parity check matrix. A number of bits of the first encoded sequence is equal to a number of bits of the second encoded sequence.
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公开(公告)号：US09628159B2
公开(公告)日：2017-04-18
申请号：US15011706
申请日：2016-02-01
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
CPC classification number: H04B7/0456 , H04B7/046 , H04B7/0615 , H04B7/0682
Abstract: A transmission device comprising: a weighting circuity which, in operation, generates transmission signals of n streams (n is an integer of 3 or more) by weighting modulated signals of the n streams using a predetermined fixed precoding matrix; a phase changing circuity which, in operation, regularly changes each phase of a symbol series included in each of the transmission signals of the n streams; and a transmitter which, in operation, transmits the transmission signals of the n streams from different antennas, the phases of each of the transmission signals of the n streams being changed in each symbol, wherein the transmission signal of an i-th stream has an mi kind of phase change value yi(t) (i is an integer between 1 and n (inclusive), 0≦yi
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公开(公告)号：US10700811B2
公开(公告)日：2020-06-30
申请号：US16391939
申请日：2019-04-23
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
Abstract: A decoding device includes: a BP decoder that performs BP decoding on an input signal; a maximum likelihood decoder that performs maximum likelihood decoding on a signal subjected to the BP decoding; and a selector that selects one of the input signal, the signal subjected to the BP decoding, and a signal subjected to the maximum likelihood decoding. In a configuration of the decoding device, when a decoder is appropriately operated according to quality of data, a calculation scale can be reduced, and power consumption can be decreased.
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公开(公告)号：US10236914B2
公开(公告)日：2019-03-19
申请号：US15297447
申请日：2016-10-19
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
Abstract: One coding scheme is selected from a plurality of coding schemes, an information sequence is encoded by using the selected coding scheme, and an obtained encoded sequence is modulated to obtain a modulated signal. The obtained modulated signal is subjected to a phase change and is transmitted. The plurality of coding schemes include at least a first coding scheme and a second coding scheme. The first coding scheme is a coding scheme with a first coding rate for forming a generated first codeword as a first encoded sequence by using a first parity check matrix. The second coding scheme is a coding scheme with a second coding rate obtained after puncturing processing, for generating a second encoded sequence by performing the puncturing processing on a generated second codeword by using a second parity check matrix different from the first parity check matrix. The number of bits of the first encoded sequence is equal to the number of bits of the second encoded sequence.
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公开(公告)号：US10326554B2
公开(公告)日：2019-06-18
申请号：US15618404
申请日：2017-06-09
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
Abstract: A decoding device includes: a BP decoder that performs BP decoding on an input signal: a maximum likelihood decoder that performs maximum likelihood decoding on a signal subjected to the BP decoding; and a selector that selects one of the input signal, the signal subjected to the BP decoding, and a signal subjected to the maximum likelihood decoding. In a configuration of the decoding device, when a decoder is appropriately operated according to quality of data, a calculation scale can be reduced, and power consumption can be decreased.
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