DATA TRANSMISSION DEVICE, DATA RECEPTION DEVICE, AND WIRELESS COMMUNICATIONS SYSTEM
    2.
    发明申请
    DATA TRANSMISSION DEVICE, DATA RECEPTION DEVICE, AND WIRELESS COMMUNICATIONS SYSTEM 失效
    数据传输设备,数据接收设备和无线通信系统

    公开(公告)号:US20100272202A1

    公开(公告)日:2010-10-28

    申请号:US12810638

    申请日:2008-12-25

    IPC分类号: H04L27/28

    摘要: When an error correction decoding unit 26 of a data reception device 2 fails in error correction decoding of a codeword, an MIMO processing unit 15 of a data transmission device 1 deforms transmitted codewords according to a predetermined rule, and transmits the codewords, and the error correction decoding unit 26 of the data reception device 2 reproduces data by using the deformed codewords. As a result, not only the noise but the interference wave components can be reduced, and the success rates of the demodulation and error correction decoding can be improved greatly.

    摘要翻译: 当数据接收装置2的纠错解码单元26对码字的纠错解码失败时,数据传输装置1的MIMO处理单元15根据预定规则使发送的码字变形,并发送码字,并且发送错误 数据接收装置2的校正解码单元26通过使用变形的码字再现数据。 结果,不仅可以降低噪声而且可以降低干扰波分量,而且可以大大提高解调和纠错解码的成功率。

    CHECK-MATRIX GENERATING METHOD, ENCODING METHOD, COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, AND ENCODER
    3.
    发明申请
    CHECK-MATRIX GENERATING METHOD, ENCODING METHOD, COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, AND ENCODER 审中-公开
    检查矩阵生成方法,编码方法,通信设备,通信系统和编码器

    公开(公告)号:US20100058140A1

    公开(公告)日:2010-03-04

    申请号:US12376344

    申请日:2007-08-02

    IPC分类号: H03M13/05 G06F11/10

    CPC分类号: H03M13/1177 H03M13/6508

    摘要: A regular quasi-cyclic matrix is generated in which specific regularity is given to cyclic permutation matrices. A mask matrix capable of supporting a plurality of encoding rates is generated. A specific cyclic permutation matrix in the regular quasi-cyclic matrix is converted into a zero-matrix using a mask matrix corresponding to a specific encoding rate to generate an irregular masking quasi-cyclic matrix. An irregular parity check matrix with an LDGM structure is generated in which the masking quasi-cyclic matrix and a matrix in which the cyclic permutation matrices are arranged in a staircase manner are arranged in a predetermined location.

    摘要翻译: 生成规则准循环矩阵,其中给定循环置换矩阵的特定规则性。 产生能够支持多种编码速率的掩模矩阵。 使用与特定编码速率相对应的掩模矩阵将常规准循环矩阵中的特定循环置换矩阵转换为零矩阵,以生成不规则掩蔽准循环矩阵。 生成具有LDGM结构的不规则奇偶校验矩阵,其中掩蔽准循环矩阵和其中循环置换矩阵以阶梯排列的矩阵布置在预定位置。

    Communication system, receiver, transmitter and communication method
    5.
    发明授权
    Communication system, receiver, transmitter and communication method 有权
    通信系统,接收机,发射机和通信方式

    公开(公告)号:US07461322B2

    公开(公告)日:2008-12-02

    申请号:US10482486

    申请日:2003-02-07

    申请人: Wataru Matsumoto

    发明人: Wataru Matsumoto

    IPC分类号: H03M13/00

    摘要: A communication system according to the present invention comprises a transmitter for performing low-density parity-check (LDPC) coding and a receiver for performing LDPC decoding based on the “Sum-Product algorithm”, and performing a synchronous control and a user detection by using a sum of absolute values of logarithm likelihood ratio of the posterior probability of each bit that is output as a decoding result.

    摘要翻译: 根据本发明的通信系统包括:用于执行低密度奇偶校验(LDPC)编码的发射机和基于“求和乘法算法”执行LDPC解码的接收机,并且通过以下步骤执行同步控制和用户检测 使用作为解码结果输出的每个比特的后验概率的对数似然比的绝对值之和。

    Communication system, receiver, and communication method for correcting transmission communication errors
    6.
    发明授权
    Communication system, receiver, and communication method for correcting transmission communication errors 有权
    通信系统,接收机和通信方法,用于纠正传输通信错误

    公开(公告)号:US07460610B2

    公开(公告)日:2008-12-02

    申请号:US10491670

    申请日:2003-05-22

    申请人: Wataru Matsumoto

    发明人: Wataru Matsumoto

    IPC分类号: H04B15/00

    摘要: A communication system includes a transmitter and a receiver. The transmitter transmits a signal encoded by a low-density parity-check (LDPC) coding. The receiver includes a decoder, a phase error estimator, and a correction unit. The decoder decodes the signal at a plurality of sampling points using a single iteration of sum-product decoding. The phase error estimator estimates a phase error of the signal using minimum mean square error (MMSE) estimation and soft decision information obtained by the sum-product decoding. The correction unit corrects the signal using the phase error.

    摘要翻译: 通信系统包括发射机和接收机。 发射机发送通过低密度奇偶校验(LDPC)编码编码的信号。 接收机包括解码器,相位误差估计器和校正单元。 解码器使用和乘解码的单次迭代对多个采样点处的信号进行解码。 相位误差估计器使用最小均方误差(MMSE)估计和通过和乘解码获得的软判决信息来估计信号的相位误差。 校正单元使用相位误差校正信号。

    Retransmission Control Method And Communications Device
    8.
    发明申请
    Retransmission Control Method And Communications Device 有权
    重传控制方法与通信装置

    公开(公告)号:US20070277082A1

    公开(公告)日:2007-11-29

    申请号:US10592351

    申请日:2004-04-28

    申请人: Wataru Matsumoto

    发明人: Wataru Matsumoto

    IPC分类号: H03M13/09

    摘要: A retransmission control method comprising: generating N parity check matrices; generating a generator matrix containing a check symbol generator matrix contained in the first parity check matrix; transmitting the codeword generated by using the generator matrix to another communications device; generating, when the communications device receives a NAK in response to the codeword, a first additional parity by using the second parity check matrix; and retransmitting the first additional parity to the another communications device.

    摘要翻译: 一种重传控制方法,包括:产生N个奇偶校验矩阵; 生成包含第一奇偶校验矩阵中包含的校验符号生成矩阵的生成矩阵; 将通过使用所述生成矩阵生成的码字发送到另一通信设备; 当所述通信设备响应于所述码字接收到NAK时,产生通过使用所述第二奇偶校验矩阵的第一附加奇偶校验; 并向另一个通信设备重发第一附加奇偶校验。

    Communication system and communication method
    9.
    发明授权
    Communication system and communication method 有权
    通信系统和通信方法

    公开(公告)号:US07212552B2

    公开(公告)日:2007-05-01

    申请号:US10825304

    申请日:2004-04-16

    IPC分类号: H04J3/16

    摘要: In the communication system which performs the data communication by the discrete multi-tone modem scheme between a plurality of data communication units using the time-division half-duplex communication function, the ratio between the data transmission time suitable for data communication and the quasi-data transmission time dynamically changes within one period. Further, bits are assigned in such a manner that the data of one period can be transmitted during the data transmission time of that period. Dummy bits are assigned to the portions of the data transmission time to which the data to be transmitted has not been assigned.

    摘要翻译: 在使用时分半双工通信功能的多个数据通信单元之间通过离散多音调制方式执行数据通信的通信系统中,适合于数据通信的数据传输时间与准数据通信之间的比率, 数据传输时间在一个周期内动态变化。 此外,以这样的方式分配比特,使得可以在该周期的数据传输时间期间发送一个周期的数据。 虚拟位被分配给尚未分配要发送的数据的数据发送时间的部分。

    Method and apparatus for generating check matrix
    10.
    发明申请
    Method and apparatus for generating check matrix 失效
    生成校验矩阵的方法和装置

    公开(公告)号:US20050251724A1

    公开(公告)日:2005-11-10

    申请号:US10520061

    申请日:2004-02-27

    申请人: Wataru Matsumoto

    发明人: Wataru Matsumoto

    摘要: A method of generating a check matrix for an LDPC code includes determining a coding rate, generating a basic matrix that satisfies predetermined conditions, determining a number of columns of a check matrix, substituting rows of the basic matrix based on a specific relational equation, provisionally searching an ensemble of weights by executing Gaussian approximation, deleting rows of the basic matrix after the permutation in order from the bottom by considering the number of rows after a division, searching an optimal ensemble of weights by executing Gaussian approximation based on a predetermined condition after row deletion, and dividing at random the weights of the basic matrix after the row deletion based on the optimal ensemble.

    摘要翻译: 生成LDPC码的校验矩阵的方法包括确定编码率,生成满足预定条件的基本矩阵,确定校验矩阵的列数,基于特定关系方程代替基本矩阵的行,临时地 通过执行高斯近似来搜索权重集合,通过考虑分割后的行数从底部按顺序排列排列后的基本矩阵的行,通过基于预定条件执行高斯近似来搜索加权的最佳集合 行删除,并且根据最佳集合随机划分行删除后的基本矩阵的权重。