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公开(公告)号：US20150288385A1
公开(公告)日：2015-10-08
申请号：US14743591
申请日：2015-06-18
Inventor： Yutaka MURAKAMI , Shutai OKAMURA
CPC classification number: H03M13/116 , H03M13/005 , H03M13/1125 , H03M13/15 , H03M13/616 , H03M13/6362 , H03M13/6527 , H04L1/0041
Abstract: Disclosed are an encoder, a transmitting device, a coding method and a transmission method with which the transmission amount is reduced and a deterioration in transmission efficiency is suppressed while improving reception quality when QC-LDPC or a like block coding is used. A puncture pattern setting unit searches for a puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of a sub block matrix that forms a check matrix (H) of a QC-LDPC code, and a puncture unit (data reduction unit) switches the puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of the sub block matrix that forms the check matrix of the QC-LDPC code.
Abstract translation: 公开了一种在使用QC-LDPC或类似块编码的同时提高接收质量的编码器，发送装置，编码方法和传输方法，其中发送量减少并且抑制了传输效率的劣化。 穿刺图案设置单元针对形成QC-LDPC码的校验矩阵（H）的子块矩阵的列数的每个整数倍或每个除数的列数的每个整数倍搜索穿孔图案，并且 穿刺单元（数据缩小单元）对形成QC-LDPC码的校验矩阵的子块矩阵的列数的每个整数倍的每个整数倍或每个除数的每个整数倍切换穿孔图案。
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Patent Agency Ranking
公开(公告)号：US20240113810A1
公开(公告)日：2024-04-04
申请号：US18532791
申请日：2023-12-07
Inventor： Yutaka MURAKAMI , Shutai OKAMURA , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Kazuaki TAKAHASHI
CPC classification number: H04L1/0071 , H03M13/15 , H04L1/0003 , H04L1/0009 , H04L1/0059 , H04L1/22 , H04L5/0007 , H04L27/0008 , H04L27/36 , H04L27/38 , H04L27/2647
Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.
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公开(公告)号：US20240080047A1
公开(公告)日：2024-03-07
申请号：US18501757
申请日：2023-11-03
Inventor： Yutaka MURAKAMI , Shutai OKAMURA
CPC classification number: H03M13/116 , H03M13/1125 , H03M13/15 , H03M13/616 , H03M13/6362 , H03M13/6527 , H04L1/0041
Abstract: Disclosed are an encoder, a transmission device, and an encoding method with which the transmission amount is reduced and a deterioration in transmission efficiency is suppressed while improving reception quality when QC-LDPC or a like block encoding is used. A puncture pattern setting unit (620) searches for a puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of a sub block matrix that forms a check matrix (H) of a QC-LDPC code, and a puncture unit (data reduction unit) (630) switches the puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of the sub block matrix that forms the check matrix of the QC-LDPC code.
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公开(公告)号：US20220158762A1
公开(公告)日：2022-05-19
申请号：US17590761
申请日：2022-02-01
Inventor： Yutaka MURAKAMI , Shutai OKAMURA , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Kazuaki TAKAHASHI
Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.
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公开(公告)号：US20210288665A1
公开(公告)日：2021-09-16
申请号：US17322541
申请日：2021-05-17
Inventor： Yutaka MURAKAMI , Shutai OKAMURA
Abstract: Disclosed are an encoder, a transmission device, and an encoding method with which the transmission amount is reduced and a deterioration in transmission efficiency is suppressed while improving reception quality when QC-LDPC or a like block encoding is used. A puncture pattern setting unit (620) searches for a puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of a sub block matrix that forms a check matrix (H) of a QC-LDPC code, and a puncture unit (data reduction unit) (630) switches the puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of the sub block matrix that forms the check matrix of the QC-LDPC code.
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公开(公告)号：US20200266930A1
公开(公告)日：2020-08-20
申请号：US16859731
申请日：2020-04-27
Inventor： Yutaka MURAKAMI , Shutai OKAMURA , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Kazuaki TAKAHASHI
Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.
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