公开(公告)号：US09077377B2

公开(公告)日：2015-07-07

申请号：US13263013

申请日：2011-02-09

申请人： Shutai Okamura

发明人： Shutai Okamura

IPC分类号： H03M13/00 ,  H03M13/11 ,  H03M13/35 ,  H04B1/69

CPC分类号： H03M13/1117 ,  H03M13/1102 ,  H03M13/1142 ,  H03M13/2767 ,  H03M13/353 ,  H03M13/6527 ,  H03M13/6544 ,  H04B2001/6908

摘要： In a transmission device, a determining unit determines, for use in transmission, an LDPC encoding method corresponding to occurrence conditions of external noise from a plurality of LDPC encoding methods each having the same code length and the same code rate and being defined by a different parity check matrix, and an encoding unit generates a codeword bit sequence by encoding transmission data using the LDPC encoding method determined by the determining unit.

摘要翻译： 在传输装置中，确定单元在传输中使用与来自多个LDPC编码方法相对应的外部噪声的出现条件的LDPC编码方法，每个LDPC编码方法具有相同的码长和相同的码率，并由不同的码率定义 奇偶校验矩阵，并且编码单元通过使用由确定单元确定的LDPC编码方法对发送数据进行编码来生成码字比特序列。

公开(公告)号：US08473827B2

公开(公告)日：2013-06-25

申请号：US13122942

申请日：2009-10-09

申请人： Yutaka Murakami ,  Shutai Okamura

发明人： Yutaka Murakami ,  Shutai Okamura

IPC分类号： H03M13/03

CPC分类号： H03M13/116 ,  H03M13/005 ,  H03M13/1125 ,  H03M13/15 ,  H03M13/616 ,  H03M13/6362 ,  H03M13/6527 ,  H04L1/0041

摘要： 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.

摘要翻译： 公开了一种编码器，发送装置和编码方法，其中，当使用QC-LDPC等类型块编码时，在提高接收质量的同时，传输量减少并且抑制传输效率的劣化。 穿刺图案设置单元（620）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的每个整数倍或每个除数的数量的每个除数搜索穿孔图案 ，并且穿刺单元（数据缩小单元）（630）针对形成QC-LDPC的校验矩阵的子块矩阵的列数的每个整数倍或每个除数的每个除数的整数倍切换穿孔图案 码。

公开(公告)号：US08423876B2

公开(公告)日：2013-04-16

申请号：US12668655

申请日：2008-07-11

申请人： Shutai Okamura ,  Yutaka Murakami ,  Masayuki Orihashi

发明人： Shutai Okamura ,  Yutaka Murakami ,  Masayuki Orihashi

IPC分类号： H03M13/03

CPC分类号： H03M13/118 ,  H03M13/1111 ,  H03M13/1154 ,  H03M13/23 ,  H03M13/235 ,  H03M13/6362

摘要： It is possible to provide and an LDPC-CC (Low-Density Parity-Check Convolution Codes) encoder and an LDPC-CC decoder which performs an error correction encoding and decoding while reducing the amount of a termination sequence required for encoding/decoding the LDPC-CC encoding/decoding and suppressing degradation of the transmission efficiency. The LDPC-CC encoder (400) includes a weight control unit (470) which stores a weight pattern (475) based on an LDPC-CC inspection matrix (100); and a weight pattern (476) based on a check matrix (300) obtained by deforming an LDPC-CC inspection matrix (100). The weight control unit (470) controls a weight to be multiplied onto the outputs of a plurality of shift registers (410-1 to 410-M, 430-1 to 430-M) by using the weight pattern (475) when the input bit is an information sequence, and using a weight pattern (476) which makes a weight value to be multiplied by an inspection bit v2,t to be 0 when the input bit is a termination sequence.

摘要翻译： 可以提供LDPC-CC（低密度奇偶校验卷积码）编码器和LDPC-CC解码器，该LDPC-CC解码器在减少LDPC编码/解码所需的终止序列的量的同时进行纠错编码和解码 -CC编码/解码并抑制传输效率的降低。 LDPC-CC编码器（400）包括：权重控制单元（470），其基于LDPC-CC检查矩阵（100）存储权重模式（475）; 以及基于通过使LDPC-CC检查矩阵（100）变形而获得的校验矩阵（300）的权重模式（476）。 权重控制单元（470）通过使用加权模式（475）来控制要乘以多个移位寄存器（410-1至410-M，430-1至430-M）的输出的权重 位是信息序列，并且当输入比特是终止序列时，使用使加权值乘以检查比特v2的加权模式（476），t为0。

公开(公告)号：US08401110B2

公开(公告)日：2013-03-19

申请号：US12447885

申请日：2007-11-01

申请人： Yutaka Murakami ,  Shutai Okamura ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Kazuaki Takahashi

发明人： Yutaka Murakami ,  Shutai Okamura ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Kazuaki Takahashi

IPC分类号： H04L5/12 ,  H04L23/02

CPC分类号： H04L1/0071 ,  H03M13/15 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0059 ,  H04L1/22 ,  H04L5/0007 ,  H04L27/0008 ,  H04L27/2647 ,  H04L27/36 ,  H04L27/38

摘要： 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 (11—1-11—4) that encode transport data; a mapping part (3304) that performs such a mapping that encoded data sequentially formed by the encoding parts (11—1-11—4) are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver (3301) 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.

摘要翻译： 一种发射机装置，其中使用简单的结构来成功地抑制否则将由衰落等引起的误码率性能的降级。 包括编码传输数据的编码部分（11-1-11-4）; 执行编码由编码部分（11-1-11-4）顺序形成的数据的映射的映射部分（3304）不被连续地包括在相同的符号中，从而形成数据符号; 以及交错数据符号的符号交织器（3301）。 以这种方式，可以使用低的计算复杂度来执行等同于比特交织处理的交织处理，以有效地提高接收端的接收质量。

公开(公告)号：US20120287985A1

公开(公告)日：2012-11-15

申请号：US13465171

申请日：2012-05-07

申请人： Shutai OKAMURA ,  Keisuke KINOSHITA

发明人： Shutai OKAMURA ,  Keisuke KINOSHITA

IPC分类号： H04L27/04 ,  H03K7/08

CPC分类号： H04L25/4902 ,  H03F3/2176 ,  H03F3/245 ,  H03K7/08 ,  H04L25/02

摘要： A power transmitting apparatus is usable for wireless power and data transmission. The power transmitting apparatus includes a power transmitting section configured to transmit power and data to be transmitted as being converted into a pulse train; and a control section configured to control the power transmitting section such that a change of the power caused by superimposition of the data is decreased.

摘要翻译： 电力发送装置可用于无线电力和数据传输。 电力发送装置包括功率发送部，被配置为将要发送的功率和数据转换为脉冲串; 以及控制部，被配置为控制所述功率发送部，使得由所述数据的叠加引起的功率的变化减小。

公开(公告)号：US08286064B2

公开(公告)日：2012-10-09

申请号：US12738621

申请日：2008-10-30

申请人： Shutai Okamura ,  Yutaka Murakami ,  Naoya Yosoku ,  Masayuki Orihashi

发明人： Shutai Okamura ,  Yutaka Murakami ,  Naoya Yosoku ,  Masayuki Orihashi

IPC分类号： G06F11/00

CPC分类号： H03M13/1102 ,  H03M13/23 ,  H03M13/255 ,  H03M13/356 ,  H03M13/373 ,  H03M13/6362 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/06 ,  H04L5/0044 ,  H04L27/2626 ,  H04L27/3422

摘要： Provided is a transmission device which improves the error rate characteristic upon decoding when performing error correction encoding by using a self-orthogonal code or an LDPC-CC in a communication system using a communication path having a fading fluctuation, multi-value modulation, or MIMO transmission. In the transmission device, the self-orthogonal encoding unit (110) encodes a self-orthogonal code having a constriction length K and an interleave unit (130) rearranges a code word sequence so that the same modulation symbol includes an information bit of a moment i and a non-correlated bit of the information bit of the moment i in a multi-value modulation unit (150).

摘要翻译： 提供一种传输装置，其在使用具有衰落波动，多值调制或MIMO的通信路径的通信系统中通过使用自正交码或LDPC-CC进行纠错编码时，提高解码时的错误率特性 传输。 在发送装置中，自正交编码单元（110）编码具有收缩长度K的自正交码和交织单元（130）重新排列码字序列，使得相同的调制符号包括一个信息位 i和多值调制单元（150）中的时刻i的信息比特的非相关比特。

公开(公告)号：US08121227B2

公开(公告)日：2012-02-21

申请号：US12882989

申请日：2010-09-15

申请人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka ,  Shutai Okamura

发明人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka ,  Shutai Okamura

IPC分类号： H04L27/06 ,  H04L1/02

CPC分类号： H04L27/38 ,  H04B7/04 ,  H04L25/03184 ,  H04L25/067 ,  H04L2025/0342 ,  H04L2025/03426

摘要： It is possible to demodulate a plurality of modulated signals transmitted from a plurality of antennas by using a comparatively small-size circuit with a preferable error ratio characteristic. Partial bit judgment units (509, 512) demodulates partial bits of the 64QAM-modulated signal by modifying which of the bits in the 6-bit strings constituting a symbol is to be demodulated depending on in which region of the IQ plane the reception signal point exists. This improves the partial bit error characteristic judged by the partial bit judgment units (509, 512), which in turn improves reliability of the reduced candidate signal point for use by a likelihood detection unit (518). As a result, it is possible to improve the error ratio characteristic of the final reception digital signals (322, 323).

摘要翻译： 可以通过使用具有优选误差比特性的较小尺寸的电路来解调从多个天线发送的多个调制信号。 部分位判断单元（509,512）通过根据IQ平面的哪个区域修改构成符号的6位串中的哪个位要解调64QAM调制信号的部分位，接收信号点 存在 这改善了由部分比特判断单元（509,512）判断的部分比特误差特性，这又提高了可靠性检测单元（518）使用的缩减候补信号点的可靠性。 结果，可以提高最终接收数字信号（322,323）的误差比特性。

公开(公告)号：US20110214037A1

公开(公告)日：2011-09-01

申请号：US13127560

申请日：2010-09-17

申请人： Shutai Okamura ,  Kunihiko Sakaibara

发明人： Shutai Okamura ,  Kunihiko Sakaibara

IPC分类号： H03M13/19 ,  G06F11/10

CPC分类号： H03M13/116 ,  H03M13/1128 ,  H03M13/6527

摘要： Positions holding different bit values between a first code word, which is obtained by coding an information bit sequence based on a coding method utilizing quasi-cyclic codes, and a second code word, which has the close Hamming distance from the first code word and satisfies a parity check of the coding method, are identified. Thereafter, a code word is generated by inserting bit values known to the transmitter and receiver into the identified positions of the information bit sequence and coding the information bit sequence. Upon reception of a signal based on the generated code word, the receiver judges whether known bit values held by corresponding positions in a code word obtained by decoding the received signal are the same as preset bit values. If the judgment result is negative, the code word based on the received signal is judges as erroneous even when it satisfies the parity check.

摘要翻译： 在通过使用准循环码的编码方法对信息比特序列进行编码而获得的第一码字和第二码字之间保持不同比特值的位置与第一码字具有相近的汉明距离并满足 识别编码方法的奇偶校验。 此后，通过将发送器和接收器已知的位值插入信息比特序列的识别位置并对信息比特序列进行编码来产生码字。 接收到基于所生成的代码字的信号时，接收机判断通过对接收到的信号进行解码而获得的码字中的相应位置所保持的已知比特值是否与预设比特值相同。 如果判断结果为否定，则即使满足奇偶校验，基于接收信号的码字也是判断为错误的。

公开(公告)号：US20100269009A1

公开(公告)日：2010-10-21

申请号：US12745216

申请日：2008-12-18

申请人： Shutai Okamura ,  Yutaka Murakami ,  Masayuki Orihashi

发明人： Shutai Okamura ,  Yutaka Murakami ,  Masayuki Orihashi

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/255 ,  H03M13/1128 ,  H03M13/116 ,  H03M13/118 ,  H03M13/23 ,  H03M13/6362 ,  H03M13/6502 ,  H03M13/6527

摘要： There is provided an encoder that provides a termination sequence with a simple structure for LDPC-CC encoding and reduces an amount of the termination sequence transmitted to a transmission line. The LDPC-CC encoder (200) connects a first encoder (230) to a second encoder (240) to perform encoding and thereby carry out LDPC-CC encoding, the first encoder (230) performing encoding based on an partial parity check matrix for information bits (110) obtained by extracting a sequence corresponding to the information bits in a parity check matrix (100) and the second encoder (240) performing encoding based on a partial parity check matrix for parity bits (120) obtained by extracting a sequence corresponding to the parity bits in the parity check matrix (100). A termination sequence generator (210) generates a termination sequence including the same number of bits as the memory length of the first encoder (230) and provides the generated termination sequence as an input sequence.

摘要翻译： 提供了一种编码器，其提供具有用于LDPC-CC编码的简单结构的终止序列，并减少发送到传输线的终止序列的量。 LDPC-CC编码器（200）将第一编码器（230）连接到第二编码器（240）以执行编码，从而执行LDPC-CC编码，第一编码器（230）基于部分奇偶校验矩阵执行编码， 通过提取与奇偶校验矩阵（100）中的信息比特相对应的序列获得的信息比特（110）和基于通过提取序列获得的奇偶校验比特（120）的部分奇偶校验矩阵执行编码的第二编码器（240） 对应于奇偶校验矩阵（100）中的奇偶校验位。 终止序列生成器（210）生成包括与第一编码器（230）的存储器长度相同数量的位的终止序列，并且将生成的终止序列提供为输入序列。

公开(公告)号：US20100192047A1

公开(公告)日：2010-07-29

申请号：US12668829

申请日：2008-07-11

申请人： Yutaka Murakami ,  Shutai Okamura ,  Masayuki Orihashi

发明人： Yutaka Murakami ,  Shutai Okamura ,  Masayuki Orihashi

IPC分类号： H03M13/03 ,  G06F11/00

CPC分类号： H04L1/0057 ,  H03M13/1111 ,  H03M13/235 ,  H03M13/2707 ,  H03M13/353 ,  H03M13/6306 ,  H04L1/0059 ,  H04L1/1812 ,  H04L5/0007 ,  H04L5/0042

摘要： A transmitting device and method enabling improvement of the reception quality on the receiving side when the LDPC-CC (Low-Density Parity-Check Convolutional Codes) encoding is used. The transmitting device (100) comprises an LDPC-CC encoding section (102), a sorting section (121) for sorting the encoded data (120) acquired by the LDPC-CC encoding section (102) into a first encoded data set (103_A) corresponding to the column number of the column containing “1” in a part of an LDPC-CC check matrix H from which a protograph is excluded and a second encoded data set (103_B) corresponding to the column numbers of the columns other than that, and a frame constructing section (a control section (106)) for constructing a transmission frame where the first and second encoded data sets (103_A, 103_B) are arranged in positions different in time or frequency in the transmission frame.

摘要翻译： 当使用LDPC-CC（低密度奇偶校验卷积码）编码时，能够提高接收侧的接收质量的发送装置和方法。 发送设备（100）包括LDPC-CC编码部分（102），用于将由LDPC-CC编码部分（102）获取的编码数据（120）分类为第一编码数据集（103_A）的排序部分 ）对应于从其排除原型图的LDPC-CC校验矩阵H的一部分中包含“1”的列的列号，以及对应于除此之外的列的列号的第二编码数据集（103_B） ，以及用于构造传输帧的帧构造部（控制部（106）），其中第一和第二编码数据集（103_A，103_B）被布置在传输帧中的时间或频率不同的位置。