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141.发明申请公开(公告)号：US20150365129A1
公开(公告)日：2015-12-17
申请号：US14792917
申请日：2015-07-07
Inventor： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC: H04B1/711 , H04B1/7075 , H04L27/26 , H04L5/00 , H04L27/36
CPC classification number: H04B1/711 , H04B1/707 , H04B1/7075 , H04B2201/70705 , H04B2201/70716 , H04B2201/70728 , H04J13/00 , H04L1/0003 , H04L1/0023 , H04L5/0007 , H04L5/0016 , H04L5/0044 , H04L5/0048 , H04L27/18 , H04L27/227 , H04L27/2602 , H04L27/2662 , H04L27/34 , H04L27/364 , H04L27/38 , H04L2027/004 , H04L2027/0061
Abstract: A transmitting apparatus includes an OFDM modulator that generates a first modulation symbol by modulating a first information signal using a first modulation scheme, a signal point of the first modulated information signal being arranged at a first position in an in-phase quadrature-phase plane and a second modulation symbol by modulating a second information signal using the first modulation scheme, and by changing a second position at which a signal point of the modulated second information signal is arranged to a third position in the in-phase quadrature-phase plane, wherein the third position is different from the first position. An OFDM modulation signal includes the first modulation symbol and the second modulation symbol, wherein the OFDM modulation signal comprises a plurality of subcarriers. A transmitter transmits the OFDM modulation signal.
Abstract translation: 发送装置包括OFDM调制器，其通过使用第一调制方式调制第一信息信号来生成第一调制符号，第一调制信息信号的信号点被布置在同相正交相平面中的第一位置，以及 第二调制符号，通过使用第一调制方案调制第二信息信号，并且通过改变调制的第二信息信号的信号点被布置在同相正交相平面中的第三位置的第二位置，其中 第三个位置与第一个位置不同。 OFDM调制信号包括第一调制符号和第二调制符号，其中OFDM调制信号包括多个子载波。 发射机发送OFDM调制信号。
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142.发明申请TRANSMISSION METHOD, TRANSMISSION APPARATUS, RECEPTION METHOD AND RECEPTION APPARATUS 有权传输方法，传输装置，接收方法和接收装置公开(公告)号：US20150349916A1
公开(公告)日：2015-12-03
申请号：US14820922
申请日：2015-08-07
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
CPC classification number: H04B7/0482 , H04B7/0413 , H04B7/0456 , H04B7/0617 , H04B7/0871 , H04L1/0003 , H04L1/0014 , H04L25/03171 , H04L25/03343 , H04L27/3405 , H04L2025/03426 , H04L2025/03808 , H04W72/0413 , H04W72/042 , H04W72/044
Abstract: All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol in the frequency domain and the time domain all differ. A modulated signal with such data symbols arranged therein is transmitted.
Abstract translation: 在调制信号的数据传输中使用的所有数据符号通过预编码矩阵之间的跳变进行预编码，使得用于预编码每个数据符号的预编码矩阵和用于预编码与频域中的数据符号相邻的数据符号的预编码矩阵，以及 时域完全不同 发送其中布置有这样的数据符号的调制信号。
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143.发明申请TRANSMISSION SIGNAL GENERATING APPARATUS AND METHOD, AND RECEPTION DATA GENERATING APPARATUS AND METHOD 审中-公开传输信号发生装置和方法以及接收数据生成装置和方法公开(公告)号：US20150215070A1
公开(公告)日：2015-07-30
申请号：US14678389
申请日：2015-04-03
Inventor： Yutaka MURAKAMI , Shutai Okamura , Kiyotaka Kobayashi , Masayuki Orihashi
CPC classification number: H04L1/0041 , H03M13/13 , H03M13/255 , H03M13/2721 , H03M13/2909 , H04L1/0003 , H04L1/0057 , H04L1/0071 , H04L1/0656 , H04L5/0023
Abstract: A transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. An encoding part subjects transport data to a block encoding process to form block encoded data. A modulating part modulates the block encoded data to form data symbols; and an arranging (interleaving) part arranges (interleaves) the block encoded data in such a manner that the intra-block encoded data of the encoded blocks, which include their respective single different data symbol, get together, and then supplies the arranged (interleaved) block encoded data to the modulating part. In this way, there can be provided a transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased.
Abstract translation: 一种发射机装置，即使当调制多值的数量增加时，使用相对简单的结构来抑制突发错误，而不改变编码块的块大小。 编码部分将传输数据转移到块编码处理以形成块编码数据。 调制部分调制块编码数据以形成数据符号; 并且排列（交织）部分以这样的方式布置（交织）块编码数据，使得包括它们各自的单个不同数据符号的编码块的块内编码数据在一起，然后提供所安排的（交织的 ）块编码数据到调制部分。 以这种方式，可以提供一种发射机装置，即使当调制多值的数量增加时，使用相对简单的结构来抑制突发错误，而不改变编码块的块大小。
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144.发明申请TRANSMISSION METHOD, TRANSMISSION DEVICE, RECEPTION METHOD, AND RECEPTION DEVICE 有权传输方法，传输设备，接收方法和接收设备公开(公告)号：US20150188615A1
公开(公告)日：2015-07-02
申请号：US14644834
申请日：2015-03-11
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
CPC classification number: H04B7/046 , H04B7/0417 , H04B7/0456 , H04B7/0478 , H04L1/0042 , H04L1/007 , H04L5/0007 , H04L5/0023 , H04L5/0046 , H04L5/0048 , H04L5/0053 , H04L25/0391 , H04L25/03942 , H04L25/4906 , H04L27/2032 , H04L27/22 , H04L27/2601 , H04L27/2602
Abstract: Provided is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals to be transmitted over the same frequency bandwidth at the same time, including the steps of selecting a matrix F[i] from among N matrices, which define precoding performed on the plurality of baseband signals, while switching between the N matrices, i being an integer from 0 to N−1, and N being an integer at least two, generating a first precoded signal z1 and a second precoded signal z2, generating a first encoded block and a second encoded block using a predetermined error correction block encoding method, generating a baseband signal with M symbols from the first encoded block and a baseband signal with M symbols the second encoded block, and precoding a combination of the generated baseband signals to generate a precoded signal having M slots.
Abstract translation: 提供了一种预编码方法，用于从多个基带信号中同时生成要在相同频率带宽上发送的多个预编码信号，包括以下步骤：从N个矩阵中选择矩阵F [i]，其中 定义对多个基带信号执行的预编码，同时在N个矩阵之间切换，i是0到N-1的整数，N是至少为2的整数，产生第一预编码信号z1和第二预编码信号z2， 使用预定的纠错块编码方法生成第一编码块和第二编码块，从第一编码块生成具有M个符号的基带信号和具有M个符号的基带信号的第二编码块，并且对所生成的 基带信号以产生具有M个时隙的预编码信号。
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公开(公告)号：US20150121162A1
公开(公告)日：2015-04-30
申请号：US14597810
申请日：2015-01-15
Inventor： Yutaka MURAKAMI
IPC: H03M13/11
CPC classification number: H03M13/1154 , H03M13/1105 , H03M13/1111 , H03M13/13 , H03M13/157 , H04L1/0041 , H04L1/0057
Abstract: An encoding method and encoder of a time-varying LDPC-CC with high error correction performance are provided. In an encoding method of performing low density parity check convolutional coding (LDPC-CC) of a time varying period of q using a parity check polynomial of a coding rate of (n−1)/n (where n is an integer equal to or greater than 2), the time varying period of q is a prime number greater than 3, the method receiving an information sequence as input and encoding the information sequence using Equation 1 as a g-th (g=0, 1, . . . , q−1) parity check polynomial to satisfy 0.
Abstract translation: 提供了具有高纠错性能的时变LDPC-CC的编码方法和编码器。 在使用编码率为（n-1）/ n的奇偶校验多项式（其中n为等于或等于的整数）的奇偶校验多项式的q时变周期的低密度奇偶校验卷积编码（LDPC-CC）的编码方法中， 大于2），q的时变周期是大于3的质数，该方法接收信息序列作为输入，并且使用等式1将信息序列编码为第g（g = 0,1，...）。 ，q-1）奇偶校验多项式满足0。
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Patent Agency Ranking
146.发明申请OUTPUT SIGNAL GENERATING METHOD, DECODED DATA GENERATING METHOD, OUTPUT SIGNAL GENERATING APPARATUS, AND DECODED DATA GENERATING APPARATUS 审中-公开输出信号生成方法，解码数据生成方法，输出信号生成装置和解码数据生成装置公开(公告)号：US20150003564A1
公开(公告)日：2015-01-01
申请号：US14487908
申请日：2014-09-16
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 , H04L27/2647 , H04L27/36 , H04L27/38
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.
Abstract translation: 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; 执行编码由编码部分顺序形成的数据的映射的映射部分不是连续包含在相同的符号中，从而形成数据符号; 以及交织数据符号的符号交织器。 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。
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公开(公告)号：US20140286451A1
公开(公告)日：2014-09-25
申请号：US14295898
申请日：2014-06-04
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
CPC classification number: H04B7/0456 , H04L1/0045 , H04L1/0075 , H04L25/03942 , H04L25/03955
Abstract: A transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.
Abstract translation: 一种用于同时发送相同频率的第一调制信号和第二调制信号的传输方案。 根据传输方案，预编码权重乘法单元在第一映射之后将预编码权重乘以基带信号和在第二映射之后将基带信号相乘，并输出第一调制信号和第二调制信号。 在预编码权重乘法单元中，规则地跳跃预编码权重。
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公开(公告)号：US20250105888A1
公开(公告)日：2025-03-27
申请号：US18954933
申请日：2024-11-21
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI , Hiroyuki MOTOZUKA
IPC: H04B7/0456 , H04B7/0413 , H04B7/0417 , H04B7/06
Abstract: A transmission device includes: a weighting synthesizer that generates a first precoded signal and a second precoded signal; a first pilot inserter that inserts a pilot signal into the first precoded signal; a phase changer that applies a phase change of i×Δλ to the second precoded signal, where i is a symbol number and an integer that is greater than or equal to 0; an inserter that inserts a pilot signal into the phase-changed second precoded signal; and a phase changer that applies a phase change to the phase-changed and pilot-signal-inserted second precoded signal. Δλ satisfies π/2 radians
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公开(公告)号：US20250039028A1
公开(公告)日：2025-01-30
申请号：US18713781
申请日：2022-12-14
Inventor： Yutaka MURAKAMI
IPC: H04L27/26 , H04B7/0413
Abstract: The purpose of the present invention is to both suppress any decrease in data transmission efficiency in a device for transmitting data and suppress any decrease in received data quality in other devices. This communication device performs communication using a frequency band that is can be used in a wireless system, the communication device comprising a signal processing unit for generating a modulated signal, and a transmission unit for transmitting the modulated signal. The frequency band that can be used in the wireless system is configured from a plurality of channels. The transmission unit transmits the modulated signal using a first channel among the plurality of channels in a first time slot, and transmits the modulated signal using a second channel different from the first channel in a second time slot that follows the first time slot.
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公开(公告)号：US20250038882A1
公开(公告)日：2025-01-30
申请号：US18775175
申请日：2024-07-17
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
Abstract: In a transmission method according to one aspect of the present disclosure, a encoder performs error correction coding on an information bit string to generate a code word. A mapper modulates a first bit string in which the number of bits is the predetermined integral multiple of (X+Y) in the code word using a first scheme, the first scheme being a set of a modulation scheme in which an X-bit string is mapped to generate a first complex signal and a modulation scheme in which a Y-bit string is mapped to generate a second complex signal, and modulates a second bit string in which the first bit string is removed from the code word using a second scheme different from the first scheme.
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