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    Apparatus and method for transmitting/receiving data in a communication system using structured low density parity check code
    91.
    发明申请
    Apparatus and method for transmitting/receiving data in a communication system using structured low density parity check code 有权
    在使用结构化低密度奇偶校验码的通信系统中发送/接收数据的装置和方法

    公开(公告)号：US20070011570A1

    公开(公告)日：2007-01-11

    申请号：US11471795

    申请日：2006-06-21

    申请人： Hong-Sil Jeong ,  Chan-Byoung Chae ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Young-Kyun Kim

    发明人： Hong-Sil Jeong ,  Chan-Byoung Chae ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Young-Kyun Kim

    IPC分类号： H03M13/00

    CPC分类号： H03M13/116 ,  H03M13/31

    摘要： Provided is an apparatus and method for transmitting/receiving data in a communication system using a structured Low Density Parity Check (LDPC) code. The transmitter performs structured LDPC coding on input information data using a structured LDPC code, parallel-converts a structured LDPC codeword generated by performing the structured LDPC coding, in units of groups having a predetermined size, and transmits data. The receiver receives a plurality of parallel data streams, serial-converts the received parallel data streams in units of groups having a predetermined size, and performs structured LDPC decoding on the data which was serial-converted group by group, using a structured LDPC code.

    摘要翻译： 提供了一种在使用结构化低密度奇偶校验（LDPC）码的通信系统中发送/接收数据的装置和方法。 发射机使用结构化LDPC码对输入信息数据执行结构化LDPC编码，以具有预定大小的组为单位并行转换通过执行结构化LDPC编码生成的结构化LDPC码字，并发送数据。 接收机接收多个并行数据流，以具有预定大小的组为单位对所接收的并行数据流进行串行转换，并使用结构化LDPC码对逐个串行转换的数据进行结构化LDPC解码。

    Channel coding/decoding apparatus and method for a CDMA mobile communication system
    93.
    发明授权
    Channel coding/decoding apparatus and method for a CDMA mobile communication system 有权
    CDMA移动通信系统的信道编码/解码装置和方法

    公开(公告)号：US07050417B2

    公开(公告)日：2006-05-23

    申请号：US09933091

    申请日：2001-08-20

    申请人： Jae-Yoel Kim

    发明人： Jae-Yoel Kim

    IPC分类号： H04B7/216

    CPC分类号： H04L1/0057 ,  H03M13/136 ,  H03M13/6362 ,  H04L1/0069

    摘要： Disclosed is a method for generating (2k−2t) first order Reed-Muller codes from 2k first order Reed-Muller codes based on k input information bits. The method comprises selecting t linearly independent kth order vectors; generating 2t linear combinations by linearly combining the t selected vectors; calculating 2t puncturing positions corresponding to the 2t linear combinations; selecting one k×k matrix out of a plurality of k×k matrixes having k×k inverse matrixes; calculating 2t new puncturing positions by multiplying each of the 2t puncturing positions by the selecting k×k matrix; and generating (2k−2t) first order Reed-Muller codes by puncturing the 2t new puncturing positions from the 2k first order Reed-Muller codes.

    摘要翻译： 公开了一种用于从基于第一阶Reed-Muller码的第二阶Reed-Muller码产生（2-k2-2）的第一阶Reed-Muller码的方法 在k个输入信息位上。 该方法包括选择t个线性独立的第k个次序矢量; 通过线性组合t个所选择的向量来产生2 计算与2条线性组合对应的2个删截位置; 从具有k×k个逆矩阵的多个k×k矩阵中选择一个k×k矩阵; 通过将2个删截位置乘以选择kxk矩阵来计算2个新的删截位置; 并通过从第2阶段中删除2个新的删截位置来产生第一阶Reed-Muller码（2-k2-2） k一次Reed-Muller码。

    Apparatus and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing communication system
    97.
    发明申请
    Apparatus and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing communication system 有权
    在正交频分复用通信系统中降低峰均功率比的装置和方法

    公开(公告)号：US20050238110A1

    公开(公告)日：2005-10-27

    申请号：US11111217

    申请日：2005-04-21

    申请人： Sung-Ryul Yun ,  Sung-Eun Park ,  Jae-Yoel Kim

    发明人： Sung-Ryul Yun ,  Sung-Eun Park ,  Jae-Yoel Kim

    IPC分类号： H04J11/00 ,  H04K1/10 ,  H04L27/26

    CPC分类号： H04L27/2618

    摘要： Provided is a method for reducing a PAPR (Peak-to-Average Power Ratio) of a transmit signal in a broadband wireless communication. The method includes the steps of: assigning information signals to remaining tones except L reserved tones that are previously appointed among N tones, and performing an IFFT operation on the tones; detecting peaks that are greater than a predefined reference value from the IFFT-ed signal; generating signals for removing the detected peaks using P-waveform having impulse characteristic, the P-waveform being produced using the L reserved tones; generating a clipping signal by accumulating the signals; and simultaneously removing the peaks by adding the IFFT-ed signal and the clipping signal.

    摘要翻译： 提供了一种用于降低宽带无线通信中的发送信号的PAPR（峰均功率比）的方法。 该方法包括以下步骤：将信息信号分配给除N个音调之前预先指定的L个保留音之外的剩余音调，并对该音调执行IFFT操作; 检测大于来自IFFT-ed信号的预定参考值的峰值; 产生用于使用具有脉冲特性的P波形去除检测到的峰值的信号，该P波形使用L个保留音产生; 通过累积信号产生限幅信号; 并通过加入IFFT-ed信号和限幅信号同时去除峰。

    Method and apparatus for space-time coding using lifting low density parity check codes in a wireless communication system
    98.
    发明申请
    Method and apparatus for space-time coding using lifting low density parity check codes in a wireless communication system 有权
    在无线通信系统中使用提升低密度奇偶校验码进行时空编码的方法和装置

    公开(公告)号：US20050078765A1

    公开(公告)日：2005-04-14

    申请号：US10964275

    申请日：2004-10-13

    申请人： Hong-Sil Jeong ,  Jae-Yoel Kim ,  Chan-Byoung Chae

    发明人： Hong-Sil Jeong ,  Jae-Yoel Kim ,  Chan-Byoung Chae

    IPC分类号： H04B7/02 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06

    CPC分类号： H04L1/0057 ,  H04L1/0071 ,  H04L1/0656

    摘要： A mobile communication system and method for transmitting signals through a plurality of transmission antennas by space-time coding the signals. The signals are transmitted using a low density parity check code. A lifting low density parity check matrix is formed by expanding values of elements in a low density parity check matrix with a sub-matrix corresponding to a number of the transmission antennas. The signals to be transmitted are coded using the lifting low density parity check matrix. Thereafter, the coded signals are serial/parallel converted and transmitted through the transmission antennas.

    摘要翻译： 一种用于通过对信号进行空时编码来通过多个发送天线发送信号的移动通信系统和方法。 使用低密度奇偶校验码传输信号。 通过使用与多个发送天线对应的子矩阵在低密度奇偶校验矩阵中扩展元素的值来形成提升低密度奇偶校验矩阵。 要发送的信号使用提升低密度奇偶校验矩阵进行编码。 此后，编码信号被串行/并行转换并通过发送天线发送。

    Device and method for spreading channels in mobile communication system
    99.
    发明授权
    Device and method for spreading channels in mobile communication system 失效
    用于在移动通信系统中传播信道的装置和方法

    公开(公告)号：US06512753B1

    公开(公告)日：2003-01-28

    申请号：US09473766

    申请日：1999-12-29

    申请人： Jae-Yoel Kim ,  Jae-Min Ahn ,  Hoe-Won Kang ,  Seung-Joo Maeng

    发明人： Jae-Yoel Kim ,  Jae-Min Ahn ,  Hoe-Won Kang ,  Seung-Joo Maeng

    IPC分类号： H04B7216

    CPC分类号： H04J13/102 ,  H04B7/264 ,  H04B2201/70703

    摘要： Disclosed is a channel spreading device for a base station device in a CMDA communication system for spreading input symbols using a first quasi-orthogonal code having a first length or channel spreading the input symbols using a second quasi-orthogonal code having a second length which is a multiple of the first length. The device comprises a spreading code generator for generating the second quasi-orthogonal code; a channel spreader for providing a plurality of durations by dividing a duration of the second quasi-orthogonal code by said multiple of the length of the first quasi-orthogonal code, and spreading channel coded symbols with the quasi-orthogonal codes divided to have a length corresponding to the divided durations so as to spread the symbols identical in number to said multiple of the first quasi-orthogonal code duration at the duration of the second quasi-orthogonal; and a PN spreader for spreading the channel spread signal with a PN code.

    摘要翻译： 公开了一种用于CMDA通信系统中的基站装置的信道扩展装置，用于使用具有第一长度或信道的第一准正交码扩展输入符号，该第一准正交码具有使用第二长度的第二准正交码扩展输入符号，第二准正交码是第二长度， 第一个长度的倍数。 该装置包括用于产生第二准正交码的扩展码发生器; 通道扩展器，用于通过将所述第二准正交码的持续时间除以所述第一准正交码的长度的所述倍数来提供多个持续时间，以及扩展信道编码符号与准正交码被划分为具有长度 对应于划分的持续时间，以便在第二准正交的持续时间内将与数字相同的符号扩展到第一准正交码持续时间的所述倍数; 以及用于使用PN码扩展信道扩展信号的PN扩展器。