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162 条记录 (耗时 0.04 秒)

    Apparatus and method for providing frequency hopping scheme in broadcast communication system
    33.
    发明授权
    Apparatus and method for providing frequency hopping scheme in broadcast communication system 有权
    在广播通信系统中提供跳频方案的装置和方法

    公开(公告)号：US08737448B2

    公开(公告)日：2014-05-27

    申请号：US13407244

    申请日：2012-02-28

    申请人： Sung-Ryul Yun ,  Hong-Sil Jeong ,  Hyun-Koo Yang

    发明人： Sung-Ryul Yun ,  Hong-Sil Jeong ,  Hyun-Koo Yang

    IPC分类号： H04B1/00

    CPC分类号： H04B1/713 ,  H04L5/001 ,  H04L5/0012 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0098 ,  H04L27/2655

    摘要： An apparatus and a method for using a frequency hopping scheme in a broadcast communication system are provided. A method for transmitting a broadcast signal via at least two frequency bands by a transmission end device in the broadcast communication system includes determining a frequency hopping pattern for providing a broadcast service and transmitting the same; transmitting control information via a first frame after a frequency is changed according to the frequency hopping pattern; and transmitting broadcast data for the broadcast service via a frame transmitted after the first frame.

    摘要翻译： 提供了一种在广播通信系统中使用跳频方案的装置和方法。 通过广播通信系统中的发送端设备经由至少两个频带发送广播信号的方法包括：确定用于提供广播服务并发送广播服务的跳频模式; 在根据跳频图案改变频率之后经由第一帧发送控制信息; 以及经由在第一帧之后发送的帧来发送广播服务的广播数据。

    Apparatus and method for mapping and demapping signals in a communication system using a low density parity check code
    34.
    发明授权
    Apparatus and method for mapping and demapping signals in a communication system using a low density parity check code 有权
    在使用低密度奇偶校验码的通信系统中映射和解映射信号的装置和方法

    公开(公告)号：US08689075B2

    公开(公告)日：2014-04-01

    申请号：US13435723

    申请日：2012-03-30

    申请人： Hyun-Koo Yang ,  Hong-Sil Jeong ,  Sung-Ryul Yun

    发明人： Hyun-Koo Yang ,  Hong-Sil Jeong ,  Sung-Ryul Yun

    IPC分类号： H03M13/00

    CPC分类号： H03M13/356 ,  H03M13/255 ,  H03M13/2707 ,  H03M13/271

    摘要： An apparatus and method for mapping and demapping signals in a system using a Low Density Parity Check (LDPC) code are provided. In the method, LDPC codeword bits are written column-wise and read row-wise, substreams are generated by demultiplexing the read bits using a demultiplexing scheme, and bits included in each of the substreams are mapped to symbols on a signal constellation. The demultiplexing scheme is determined corresponding to a modulation scheme used in the signal transmitter, a length of the LDPC codeword, and a number of the substreams.

    摘要翻译： 提供了一种使用低密度奇偶校验（LDPC）码在系统中映射和解映射信号的装置和方法。 在该方法中，逐行写入LDPC码字比特并且逐行读出，通过使用解复用方式解复用读取比特来产生子流，并且将每个子流中包括的比特映射到信号星座上的符号。 对应于在信号发射机中使用的调制方案，LDPC码字的长度和子数的数量来确定解复用方案。

    Method and apparatus for channel coding and decoding in a communication system using a low-density parity-check code
    35.
    发明授权
    Method and apparatus for channel coding and decoding in a communication system using a low-density parity-check code 有权
    在使用低密度奇偶校验码的通信系统中进行信道编码和解码的方法和装置

    公开(公告)号：US08645809B2

    公开(公告)日：2014-02-04

    申请号：US13103640

    申请日：2011-05-09

    申请人： Hong-Sil Jeong ,  Sung-Ryul Yun ,  Hyun-Koo Yang

    发明人： Hong-Sil Jeong ,  Sung-Ryul Yun ,  Hyun-Koo Yang

    IPC分类号： H03M13/00

    CPC分类号： H03M13/1148 ,  H03M13/033 ,  H03M13/1102 ,  H03M13/1185 ,  H03M13/152 ,  H03M13/2906 ,  H03M13/618 ,  H03M13/6362

    摘要： A channel coding method in a communication system using a Low-Density Parity-Check (LDPC) code. The channel coding method includes determining a degree distribution for a plurality of column groups of an information part and a plurality of column groups of a parity part; determining degrees for the plurality of column groups of the information part based on the degree distribution; determining a shortening order based on the degrees for the plurality of column groups of the information part; generating a parity check matrix based on the shortening order; and performing coding using the generated parity check matrix.

    摘要翻译： 一种使用低密度奇偶校验（LDPC）码的通信系统中的信道编码方法。 信道编码方法包括确定奇偶校验部分的信息部分和多个列组的多个列组的度分布; 基于所述度分布确定所述信息部分的所述多个列组的度数; 基于信息部分的多个列组的度数来确定缩短顺序; 基于缩短顺序生成奇偶校验矩阵; 以及使用所生成的奇偶校验矩阵执行编码。

    Apparatus and method for space-time block coding
    40.
    发明申请
    Apparatus and method for space-time block coding 审中-公开
    用于空时块编码的装置和方法

    公开(公告)号：US20060039499A1

    公开(公告)日：2006-02-23

    申请号：US11204598

    申请日：2005-08-16

    申请人： Chan-Byoung Chae ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Won-Il Roh ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Jeong-Tae Oh ,  Kyun-Byoung Ko

    发明人： Chan-Byoung Chae ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Won-Il Roh ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Jeong-Tae Oh ,  Kyun-Byoung Ko

    IPC分类号： H04B7/02 ,  H04L1/02

    CPC分类号： H04L1/0625 ,  H04L1/0668 ,  H04L1/0675

    摘要： A space-time block coding apparatus and method for transmitting an input symbol sequence through a plurality of Tx antennas using a channel information from the receiver in order to improve the performance of a space-time block coding (STFBC). A pre-coder pre-codes an input symbol sequence by multiplying the input symbol sequence by ejθ, θ being a phase rotation angle, the pre-coded symbol sequence being reconstructed to have real and imaginary parts. A grouping mapper forms a grouping pattern based on feedback channel information received from a receiver, and generates a grouping symbol sequence by multiplying the grouping pattern by the pre-coded symbol sequence. A mapper generates symbol vectors by recombining the real and imaginary parts of the grouping symbol sequence in an interleaving scheme. A plurality of Alamouti coders encodes the symbol vectors in an Alamouti scheme and transmits the encoded symbol vectors through corresponding transmit antennas.

    摘要翻译： 一种时空块编码装置和方法，用于使用来自接收机的信道信息通过多个Tx天线发送输入符号序列，以提高空时块编码（STFBC）的性能。 预编码器通过将输入符号序列乘以e为相位旋转角来预编码输入符号序列，所述预编码符号序列被重构为具有实部和虚部。 分组映射器基于从接收器接收的反馈信道信息形成分组模式，并通过将分组模式乘以预编码符号序列来生成分组符号序列。 映射器通过在交织方案中重组分组符号序列的实部和虚部来生成符号向量。 多个Alamouti编码器以Alamouti方案对符号向量进行编码，并通过对应的发送天线发送编码的符号向量。