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    Apparatus and method for channel coding in mobile communication system
    1.
    发明申请
    Apparatus and method for channel coding in mobile communication system 有权
    移动通信系统中信道编码的装置和方法

    公开(公告)号：US20060026488A1

    公开(公告)日：2006-02-02

    申请号：US11190543

    申请日：2005-07-27

    申请人： Nam-Shik Kim ,  Hyun-Cheol Park ,  Seung-Bum Suh ,  Eoi-Young Choi

    发明人： Nam-Shik Kim ,  Hyun-Cheol Park ,  Seung-Bum Suh ,  Eoi-Young Choi

    IPC分类号： H03M13/00

    CPC分类号： H03M13/116

    摘要： Disclosed are an apparatus and a method for reducing the coding complexity in an LDPC code used in a digital communication system. In the method, parameters required for coding are determined according to a coding rate and a code length, a seed matrix is generated according to values of the parameters, a plurality of cell matrices are generated according to the values of the parameters, a parity check matrix is generated using the seed matrix and the cell matrix, and information bits are coded from the parity check matrix. The method can be realized by a small memory and a simple shift register and can perform coding even without obtaining a generation matrix, thereby remarkably reducing the complexity of a system.

    摘要翻译： 公开了一种降低数字通信系统中使用的LDPC码的编码复杂度的装置和方法。 在该方法中，根据编码率和码长来确定编码所需的参数，根据参数的值生成种子矩阵，根据参数的值生成多个小区矩阵，奇偶校验 使用种子矩阵和单元矩阵生成矩阵，并且从奇偶校验矩阵编码信息比特。 该方法可以通过小存储器和简单的移位寄存器来实现，并且即使没有获得生成矩阵也可以执行编码，从而显着降低了系统的复杂性。

    Apparatus and method for channel coding in mobile communication system
    4.
    发明授权
    Apparatus and method for channel coding in mobile communication system 有权
    移动通信系统中信道编码的装置和方法

    公开(公告)号：US07451374B2

    公开(公告)日：2008-11-11

    申请号：US11190543

    申请日：2005-07-27

    申请人： Nam-Shik Kim ,  Hyun-Cheol Park ,  Seung-Bum Suh ,  Eoi-Young Choi

    发明人： Nam-Shik Kim ,  Hyun-Cheol Park ,  Seung-Bum Suh ,  Eoi-Young Choi

    IPC分类号： H04L1/779

    CPC分类号： H03M13/116

    摘要： Disclosed are an apparatus and a method for reducing the coding complexity in an LDPC code used in a digital communication system. In the method, parameters required for coding are determined according to a coding rate and a code length, a seed matrix is generated according to values of the parameters, a plurality of cell matrices are generated according to the values of the parameters, a parity check matrix is generated using the seed matrix and the cell matrix, and information bits are coded from the parity check matrix. The method can be realized by a small memory and a simple shift register and can perform coding even without obtaining a generation matrix, thereby remarkably reducing the complexity of a system.

    摘要翻译： 公开了一种降低数字通信系统中使用的LDPC码的编码复杂度的装置和方法。 在该方法中，根据编码率和码长来确定编码所需的参数，根据参数的值生成种子矩阵，根据参数的值生成多个小区矩阵，奇偶校验 使用种子矩阵和单元矩阵生成矩阵，并且从奇偶校验矩阵编码信息比特。 该方法可以通过小存储器和简单的移位寄存器来实现，并且即使没有获得生成矩阵也可以执行编码，从而显着降低了系统的复杂性。

    Method and apparatus for fine frequency synchronization in wireless broadband (WiBro) system without using global positioning system (GPS) receiver
    5.
    发明授权
    Method and apparatus for fine frequency synchronization in wireless broadband (WiBro) system without using global positioning system (GPS) receiver 有权
    无线宽带（WiBro）系统中精细频率同步的方法和装置，不使用全球定位系统（GPS）接收机

    公开(公告)号：US08031818B2

    公开(公告)日：2011-10-04

    申请号：US12026108

    申请日：2008-02-05

    申请人： Sung-won Lee ,  Young-gon Choi ,  Jung-ho Kim ,  Yong-sung Roh ,  Hae-lyong Kim ,  Nam-shik Kim ,  Hyun-cheol Park ,  Joong-soo Ma

    发明人： Sung-won Lee ,  Young-gon Choi ,  Jung-ho Kim ,  Yong-sung Roh ,  Hae-lyong Kim ,  Nam-shik Kim ,  Hyun-cheol Park ,  Joong-soo Ma

    IPC分类号： H04L27/06

    CPC分类号： H04L27/2675 ,  H04L27/266 ,  H04L27/2672 ,  H04L2027/0046

    摘要： Provided is a fine frequency synchronization method of a WiBro system, and particularly, a fine frequency synchronization method which measures a spread degree of a received signal of an adjacent subcarrier using orthogonality of PN sequences and thereby estimates a frequency offset, in a base station or a wireless repeater without using a GPS receiver. The fine frequency synchronization method includes: (a) performing despreading on received adjacent subcarrier sequences, using a PN sequence transmitted from a transmitting party; (b) obtaining ratios of correlative values obtained by the despreading; and (c) estimating a frequency offset on the basis of the ratio of correlative values. Accordingly, fine frequency offset estimation with relatively low complexity is possible without using a GPS receiver in a WiBro environment where interference signals of other base stations or repeaters exist.

    摘要翻译： 提供了一种WiBro系统的精细频率同步方法，特别是精细频率同步方法，其使用PN序列的正交性来测量相邻副载波的接收信号的扩展程度，从而估计基站中的频率偏移， 无需使用GPS接收机的无线中继器。 精细频率同步方法包括：（a）使用从发送方发送的PN序列对接收到的相邻子载波序列执行解扩; （b）获得通过解扩获得的相关值的比率; 和（c）基于相关值的比率估计频率偏移。 因此，在WiBro环境中不使用其他基站或中继器的干扰信号的GPS接收机的情况下，可以实现相对低的复杂度的精细频偏估计。

    APPARATUS AND METHOD FOR NETWORK-CODING
    6.
    发明申请
    APPARATUS AND METHOD FOR NETWORK-CODING 有权
    网络编码的装置和方法

    公开(公告)号：US20090041097A1

    公开(公告)日：2009-02-12

    申请号：US12026202

    申请日：2008-02-05

    申请人： Sung-won LEE ,  Young-gon CHOI ,  Jung-ho KIM ,  Yong-sung ROH ,  Hyun-cheol PARK ,  Joong-soo MA ,  Nam-shik KIM

    发明人： Sung-won LEE ,  Young-gon CHOI ,  Jung-ho KIM ,  Yong-sung ROH ,  Hyun-cheol PARK ,  Joong-soo MA ,  Nam-shik KIM

    IPC分类号： H04B3/36

    CPC分类号： H04B3/36

    摘要： Provided are a network-coding apparatus and method which can increase a data communication capacity in a communication environment to which an error-correction code (ECC) is applied. The network-coding apparatus includes a received signal processing unit receiving at least two signals, and decoding the at least two received signals; and a transmission signal processing unit receiving the at least two decoded signals from the received signal processing unit, merging the at least two decoded signals, and generating a merged transmission signal.

    摘要翻译： 提供一种能够增加应用纠错码（ECC）的通信环境中的数据通信能力的网络编码装置和方法。 网络编码装置包括：接收信号处理单元，接收至少两个信号，并解码该至少两个接收信号; 以及发送信号处理单元，从所述接收信号处理单元接收所述至少两个解码信号，合并所述至少两个解码信号，并生成合并的发送信号。

    METHOD AND APPARATUS FOR FINE FREQUENCY SYNCHRONIZATION IN WIRELESS BROADBAND (WIBRO) SYSTEM WITHOUT USING GLOBAL POSITIONING SYSTEM (GPS) RECEIVER
    7.
    发明申请
    METHOD AND APPARATUS FOR FINE FREQUENCY SYNCHRONIZATION IN WIRELESS BROADBAND (WIBRO) SYSTEM WITHOUT USING GLOBAL POSITIONING SYSTEM (GPS) RECEIVER 有权
    无线宽带（WIBRO）系统中无需使用全球定位系统（GPS）接收机的频率同步的方法和装置

    公开(公告)号：US20090041095A1

    公开(公告)日：2009-02-12

    申请号：US12026108

    申请日：2008-02-05

    申请人： Sung-won LEE ,  Young-gon CHOI ,  Jung-ho KIM ,  Yong-sung ROH ,  Hae-lyong KIM ,  Nam-shik KIM ,  Hyun-cheol PARK ,  Joong-soo MA

    发明人： Sung-won LEE ,  Young-gon CHOI ,  Jung-ho KIM ,  Yong-sung ROH ,  Hae-lyong KIM ,  Nam-shik KIM ,  Hyun-cheol PARK ,  Joong-soo MA

    IPC分类号： H04B1/707

    CPC分类号： H04L27/2675 ,  H04L27/266 ,  H04L27/2672 ,  H04L2027/0046

    摘要： Provided is a fine frequency synchronization method of a WiBro system, and particularly, a fine frequency synchronization method which measures a spread degree of a received signal of an adjacent subcarrier using orthogonality of PN sequences and thereby estimates a frequency offset, in a base station or a wireless repeater without using a GPS receiver. The fine frequency synchronization method includes: (a) performing despreading on received adjacent subcarrier sequences, using a PN sequence transmitted from a transmitting party; (b) obtaining ratios of correlative values obtained by the despreading; and (c) estimating a frequency offset on the basis of the ratio of correlative values. Accordingly, fine frequency offset estimation with relatively low complexity is possible without using a GPS receiver in a WiBro environment where interference signals of other base stations or repeaters exist.

    摘要翻译： 提供了一种WiBro系统的精细频率同步方法，特别是精细频率同步方法，其使用PN序列的正交性来测量相邻副载波的接收信号的扩展程度，从而估计基站中的频率偏移， 无需使用GPS接收机的无线中继器。 精细频率同步方法包括：（a）使用从发送方发送的PN序列对接收到的相邻子载波序列执行解扩; （b）获得通过解扩获得的相关值的比率; 和（c）基于相关值的比率估计频率偏移。 因此，在WiBro环境中不使用其他基站或中继器的干扰信号的GPS接收机的情况下，可以实现相对低的复杂度的精细频偏估计。

    Method for constructing a parity check matrix of an irregular low density parity check code
    8.
    发明申请
    Method for constructing a parity check matrix of an irregular low density parity check code 审中-公开
    用于构造不规则低密度奇偶校验码的奇偶校验矩阵的方法

    公开(公告)号：US20070162816A1

    公开(公告)日：2007-07-12

    申请号：US11582007

    申请日：2006-10-17

    申请人： Dong-Ho Kim ,  Ye-Hoon Lee ,  Nam-Shik Kim ,  Hyun-Cheol Park ,  Cheol-Woo You

    发明人： Dong-Ho Kim ,  Ye-Hoon Lee ,  Nam-Shik Kim ,  Hyun-Cheol Park ,  Cheol-Woo You

    IPC分类号： H03M13/00

    CPC分类号： H03M13/033 ,  H03M13/116 ,  H03M13/118

    摘要： A method for generating a parity check matrix of a Low Density Parity Check (LDPC) code. A base matrix is generated in which elements with a value of 1 are arranged at predefined distances. The elements with the value of 1 in the base matrix are replaced with predefined sub-matrices. The method can improve the performance of the LDPC code by implementing the parity check matrix in which the number of 4-cycles or 6-cycles adversely affecting the LDPC code performance is minimized.

    摘要翻译： 一种用于生成低密度奇偶校验（LDPC）码的奇偶校验矩阵的方法。 生成基本矩阵，其中值为1的元素以预定距离排列。 在基本矩阵中具有值1的元素被预定义的子矩阵替代。 该方法可以通过实现对LDPC码性能有不利影响的4个周期或6个周期数的奇偶校验矩阵来提高LDPC码的性能。

    Apparatus and method for network-coding
    9.
    发明授权
    Apparatus and method for network-coding 有权
    网络编码的装置和方法

    公开(公告)号：US08196003B2

    公开(公告)日：2012-06-05

    申请号：US12026202

    申请日：2008-02-05

    申请人： Sung-won Lee ,  Young-gon Choi ,  Jung-ho Kim ,  Yong-sung Roh ,  Hyun-cheol Park ,  Joong-soo Ma ,  Nam-shik Kim

    发明人： Sung-won Lee ,  Young-gon Choi ,  Jung-ho Kim ,  Yong-sung Roh ,  Hyun-cheol Park ,  Joong-soo Ma ,  Nam-shik Kim

    IPC分类号： H03M13/00

    CPC分类号： H04B3/36

    摘要： Provided are a network-coding apparatus and method which can increase a data communication capacity in a communication environment to which an error-correction code (ECC) is applied. The network-coding apparatus includes a received signal processing unit receiving at least two signals, and decoding the at least two received signals; and a transmission signal processing unit receiving the at least two decoded signals from the received signal processing unit, merging the at least two decoded signals, and generating a merged transmission signal.

    摘要翻译： 提供一种能够增加应用纠错码（ECC）的通信环境中的数据通信能力的网络编码装置和方法。 网络编码装置包括：接收信号处理单元，接收至少两个信号，并解码该至少两个接收信号; 以及发送信号处理单元，从所述接收信号处理单元接收所述至少两个解码信号，合并所述至少两个解码信号，并生成合并的发送信号。

    Apparatus and method for detecting a signal in a communication system using Multiple Input Multiple Output scheme
    10.
    发明申请
    Apparatus and method for detecting a signal in a communication system using Multiple Input Multiple Output scheme 审中-公开
    用于使用多输入多输出方案在通信系统中检测信号的装置和方法

    公开(公告)号：US20070230628A1

    公开(公告)日：2007-10-04

    申请号：US11716343

    申请日：2007-03-09

    申请人： Cheol-Woo You ,  Dong-Ho Kim ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Hyun-Cheol Park ,  Nam-Shik Kim

    发明人： Cheol-Woo You ,  Dong-Ho Kim ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Hyun-Cheol Park ,  Nam-Shik Kim

    IPC分类号： H04L27/06 ,  H04L1/02

    CPC分类号： H04L1/06 ,  H04L25/03006 ,  H04L2025/03426

    摘要： An apparatus is provided for detecting a signal in a communication system using a Multiple Input Multiple Output (MIMO) scheme. The signal detection apparatus includes a detector for generating second matrixes by extending a first matrix composed of channel response vectors, generating specific matrixes by decomposing the second matrixes, generating a lattice point of vectors constituting the second matrixes, estimating a signal using the generated specific matrixes and lattice point, and detecting the estimated signal as a received signal if the estimated signal has a value within a predetermined allowable range.

    摘要翻译： 提供一种用于在使用多输入多输出（MIMO）方案的通信系统中检测信号的装置。 信号检测装置包括：检测器，用于通过扩展由信道响应向量组成的第一矩阵来产生第二矩阵，通过分解第二矩阵产生特定矩阵，产生构成第二矩阵的向量的格点，使用所生成的特定矩阵估计信号 并且如果所估计的信号具有在预定允许范围内的值，则将所估计的信号作为接收信号进行检测。