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    Communication method, and transmitting apparatus and receiving apparatus using that communication method
    13.
    发明授权
    Communication method, and transmitting apparatus and receiving apparatus using that communication method 有权
    通信方法，以及使用该通信方法的发送装置和接收装置

    公开(公告)号：US08400996B2

    公开(公告)日：2013-03-19

    申请号：US13433577

    申请日：2012-03-29

    申请人： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka ,  Yoichi Nakagawa

    发明人： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka ,  Yoichi Nakagawa

    IPC分类号： H04J1/00 ,  H04J3/00 ,  H04B7/212

    CPC分类号： H04L5/0048 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0613 ,  H04B7/0837 ,  H04J11/00 ,  H04L5/0007 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2647 ,  H04L27/2657 ,  H04L27/2662 ,  H04W72/0453

    摘要： A transmission apparatus includes a plurality of antennas and a frame configurator that selects, in a first unit time either a first transmitting method which transmits a modulated signal from at least one of the plurality of antennas, or a second transmitting method which transmits a plurality of modulated signals from the plurality of antennas, for a first carrier group arranged for a first terminal and either the first transmitting method or the second transmitting method for a second carrier group arranged for a second terminal. The frame configurator selects, in a second unit time either the first transmitting method or the second transmitting method for the first carrier group arranged for a third terminal and either the first transmitting method or the second transmitting method for the second carrier group arranged for a fourth terminal, wherein each of carrier groups includes one or more sub-carriers.

    摘要翻译： 发送装置包括多个天线和帧配置器，其在第一单位时间中选择发送来自所述多个天线中的至少一个的调制信号的第一发送方法，或者发送多个天线的第二发送方法 针对布置用于第一终端的第一载波组，以及为第二终端配置的第二载波组的第一发射方法或第二发射方法，来自多个天线的调制信号。 帧配置器在第二单位时间中选择用于第三终端的第一载波组的第一发送方法或第二发送方法，以及用于第四载波组的第一发送方法或第二发送方法， 终端，其中每个载波组包括一个或多个子载波。

    ENCODING METHOD, DECODING METHOD, ENCODER, AND DECODER
    14.
    发明申请
    ENCODING METHOD, DECODING METHOD, ENCODER, AND DECODER 有权
    编码方法，解码方法，编码器和解码器

    公开(公告)号：US20130055049A1

    公开(公告)日：2013-02-28

    申请号：US13583824

    申请日：2012-01-20

    申请人： Yutaka Murakami

    发明人： Yutaka Murakami

    IPC分类号： H03M13/15

    CPC分类号： H03M13/373 ,  H03M13/1154 ,  H03M13/6356

    摘要： An encoding method generates a parity bit sequence by encoding an information sequence with feed-forward LDPC convolutional codes based on a plurality of parity check polynomials each having a coding rate of (n−1)/n, then performs an interleaving process and an accumulation process. The accumulation process is an exclusive OR operation performed on bits of the interleaved parity bit sequence and on bits of a delayed accumulated parity bit sequence. A coded sequence is then generated from the information sequence and the accumulated parity bit sequence.

    摘要翻译： 编码方法通过基于多个具有编码率（n-1）/ n的奇偶校验多项式对具有前馈LDPC卷积码的信息序列进行编码来生成奇偶校验位序列，然后执行交织处理和累积 处理。 累积处理是对交织的奇偶校验位序列的比特和延迟的累加奇偶校验位序列的比特执行的异或运算。 然后从信息序列和累加的奇偶校验位序列生成编码序列。

    Multiantenna receiving device
    16.
    发明授权
    Multiantenna receiving device 有权
    多天线接收装置

    公开(公告)号：US08340226B2

    公开(公告)日：2012-12-25

    申请号：US13360308

    申请日：2012-01-27

    申请人： Yutaka Murakami ,  Shutai Okamura ,  Takaaki Kishigami

    发明人： Yutaka Murakami ,  Shutai Okamura ,  Takaaki Kishigami

    IPC分类号： H03D1/00

    CPC分类号： H04L1/005 ,  H03M13/11 ,  H03M13/27 ,  H03M13/2957 ,  H04B7/04 ,  H04L1/1829 ,  H04L25/03318 ,  H04L25/067 ,  H04L2025/03426

    摘要： A multiantenna receiving device is provided to make it possible to cope with both improvement in error rate characteristic and simplification in structure. The multiantenna receiving device is comprised of soft judgement output units for carrying out a soft judgement of a modulation signal in accordance with signal point distances between a plurality of candidate signal points with respect to a plurality of multiplexed modulation signals and a receiving signal, decoding units for obtaining digital data of the modulation signals by using the judged results obtained by the soft judgement output units, and signal point decreasing units for decreasing the number of the candidate signal points used in the soft judgement output units by recursively using a part of the digital data except self-modulation signals obtained by the decoding units.

    摘要翻译： 提供了一种多天线接收装置，以便能够应对错误率特性的提高和结构简化。 多天线接收装置包括软判断输出单元，用于根据多个候选信号点与多个复用调制信号和接收信号之间的信号点距离执行调制信号的软判断，解码单元 用于通过使用由软判断输出单元获得的判断结果获得调制信号的数字数据，以及信号点减少单元，用于通过递归地使用数字的一部分来减少软判断输出单元中使用的候选信号点的数量 除了由解码单元获得的自调制信号之外的数据。

    Communication apparatus and communication method
    17.
    发明授权
    Communication apparatus and communication method 有权
    通信设备和通信方法

    公开(公告)号：US08270521B2

    公开(公告)日：2012-09-18

    申请号：US13052833

    申请日：2011-03-21

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

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

    IPC分类号： H04B7/02

    CPC分类号： H04L27/0008 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0669 ,  H04L1/0006 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/0618 ,  H04L1/08 ,  H04L5/0046 ,  H04L27/3405 ,  H04W52/42

    摘要： Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.

    摘要翻译： 从第一天线发送调制信号A，从第二天线发送调制信号B. 作为调制信号B，分别在时间i和时间i + 1发送从不同数据获得的调制符号S2（i）和S2（i + 1）。 相反，作为调制信号A，分别在时间i和时间i + 1发送通过改变相同数据的信号点排列获得的调制符号S1（i）和S1（i）'。 结果，可以在时间i和时间i + 1有意地改变接收质量，因此当接收质量好的时候使用调制信号A的解调结果使得调制信号A和B能够被良好地解调 错误率表现。

    Reception device and reception method
    19.
    发明授权
    Reception device and reception method 有权
    接收设备和接收方式

    公开(公告)号：US08233571B2

    公开(公告)日：2012-07-31

    申请号：US12527654

    申请日：2008-02-20

    申请人： Hirohito Mukai ,  Yutaka Murakami ,  Kiyotaka Kobayashi ,  Hidekuni Yomo ,  Yoshinori Kunieda

    发明人： Hirohito Mukai ,  Yutaka Murakami ,  Kiyotaka Kobayashi ,  Hidekuni Yomo ,  Yoshinori Kunieda

    IPC分类号： H03D1/00

    CPC分类号： H03M13/27 ,  H04J11/003 ,  H04L1/005 ,  H04L1/0071 ,  H04L27/2626 ,  H04L27/2647

    摘要： A reception device includes reception antennas and an address generation unit that converts a write-in or read-out order of channel estimation values according to a rearrangement rule. A storage unit writes in or reads out channel estimation values in the converted order, and an address generation unit converts a data sequence write-in or read-out order according to the rearrangement rule. A signal storage unit writes in or reads out data sequences in the converted order, and a replica generation unit generates a replica signal by re-modulating the data sequence according to the channel estimation value. A cancel unit successively generates a stream signal in which a data sequence interference signal is cancelled, by using the channel estimation value, the data sequence, and the replica signal.

    摘要翻译： 接收装置包括接收天线和地址生成单元，其根据重排规则转换信道估计值的写入或读出次序。 存储单元以转换的顺序写入或读出信道估计值，地址生成单元根据重排规则转换数据序列写入或读出顺序。 信号存储单元以转换的顺序写入或读出数据序列，并且副本生成单元通过根据信道估计值重新调制数据序列来生成复制信号。 取消单元通过使用信道估计值，数据序列和复制信号，依次生成数据序列干扰信号被消除的流信号。