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    다중 안테나 무선 통신시스템에서의 채널 추정을 위한 송신기와 수신기 및 이에 적용되는 통신 방법
    161.
    发明公开
    다중 안테나 무선 통신시스템에서의 채널 추정을 위한 송신기와 수신기 및 이에 적용되는 통신 방법 有权
    MIMO系统中信道估计的装置和方法

    公开(公告)号：KR1020090061564A

    公开(公告)日：2009-06-16

    申请号：KR1020080079426

    申请日：2008-08-13

    Applicant: 한국전자통신연구원

    Inventor： 정민호 ,  이석규 ,  방승찬 ,  이일구

    IPC: H04B7/04 ,  H04L1/02

    CPC classification number: H04L25/0204 ,  H04B7/0684 ,  H04B7/08 ,  H04L1/02 ,  H04L25/0224

    Abstract: A transmitter, a receiver and a communication method applied to the transmitter for channel estimation in a wireless communications system in the timing offset are provided to estimate a channel without additional performance deterioration by timing offset regardless of the number of antennas. An MIMO(Multiple Input Multiple Output) frequency area signal generator(110) encodes a binary source received from a MAC(Medium Access Control) layer. A MIMO frequency area signal generating unit is the encoded bit in a subcarrier. A pilot inserting unit inserts a pilot into the signal of the branch. A pilot inserting unit inserts the pilot into the signal of each transmit branch. An IFFT(Inverse Fast Fourier Transform) units convert signal into the waveform of the time domain.

    Abstract translation: 提供了一种应用于发射机的发射机，接收机和通信方法，用于定时偏移中的无线通信系统中的信道估计，以便无论天线数量如何，都可以通过定时偏移来估计信道而无需额外的性能下降。 MIMO（多输入多输出）频域信号发生器（110）对从MAC（媒体访问控制）层接收的二进制源进行编码。 MIMO频域区域信号生成单元是子载波中的编码比特。 导频插入单元将导频插入到分支的信号中。 导频插入单元将导频插入每个发射分支的信号。 IFFT（快速傅里叶逆变换）单元将信号转换为时域的波形。

    가변 정보 길이 및 가변 부호율을 가진 ＬＤＰＣ 부호의패리티 검사 행렬 생성 방법, 부/복호화 방법 및 이를이용하는 장치
    162.
    发明授权
    가변 정보 길이 및 가변 부호율을 가진 ＬＤＰＣ 부호의패리티 검사 행렬 생성 방법, 부/복호화 방법 및 이를이용하는 장치 失效
    奇偶校验矩阵生成方法，用于具有可变信息长度的LDPC码的编码/解码方法和使用其的装置

    公开(公告)号：KR100833515B1

    公开(公告)日：2008-05-29

    申请号：KR1020070021965

    申请日：2007-03-06

    Applicant: 한국전자통신연구원

    Inventor： 오종의 ,  윤찬호 ,  정민호 ,  이유로 ,  이석규 ,  유희정 ,  방승찬

    IPC: H03M13/11

    CPC classification number: H03M13/116 ,  H03M13/1188 ,  H03M13/618 ,  H03M13/6356 ,  H03M13/6393

    Abstract: A method for generating a parity check matrix of an LDPC code having a variable information length and a variable code rate, an encoding/decoding method, and an apparatus using the same are provided to form easily a decoder of a variable information length and variable code rate by using only one parallel processing type hardware. A first parity check matrix generation process is performed to generate a first parity check matrix including a first information block and a parity block. An mth parity check matrix generation process is performed to generate an mth parity check matrix by adding an mth information block to a generated m-1th parity check matrix. The mth parity check matrix generation process includes a process for generating the mth parity check matrix by optimizing degree distribution and cycle distribution.

    Abstract translation: 提供一种用于生成具有可变信息长度和可变码率的LDPC码的奇偶校验矩阵的方法，编码/解码方法以及使用其的装置，以便容易地形成可变信息长度和可变码的解码器 仅使用一个并行处理类型硬件的速率。 执行第一奇偶校验矩阵生成处理以生成包括第一信息块和奇偶校验块的第一奇偶校验矩阵。 执行第m个奇偶校验矩阵生成处理，以通过将第m个信息块与生成的第m-1个奇偶校验矩阵相加来生成第m个奇偶校验矩阵。 第m个奇偶校验矩阵生成处理包括通过优化度分布和周期分布来生成第m个奇偶校验矩阵的处理。

    사전에 지정한 패리티를 검사한 결과를 이용해 ＬＤＰＣ코드를 부호화하는 방법
    163.
    发明公开
    사전에 지정한 패리티를 검사한 결과를 이용해 ＬＤＰＣ코드를 부호화하는 방법 失效
    降低复杂度编码器生成低密度奇偶校验码的方法

    公开(公告)号：KR1020080030329A

    公开(公告)日：2008-04-04

    申请号：KR1020060096274

    申请日：2006-09-29

    Applicant: 한국전자통신연구원

    Inventor： 윤찬호 ,  오종의 ,  정민호 ,  이유로 ,  이석규 ,  유희정 ,  방승찬

    IPC: H03M13/11

    CPC classification number: H03M13/116 ,  H03M13/1185 ,  H03M13/1188

    Abstract: A method for encoding an LDPC(Low Density Parity Check) code by using a result of checking a predetermined parity is provided to effectively encode the LDPC code by slightly changing only a structure of an H matrix. A method for encoding an LDPC code by using a result of checking a predetermined parity includes the steps of: forming a parity bit check matrix with a dual diagonal structure based on an H matrix(901); calculating all parity bit by inserting an arbitrary binary number into a sub block unit(902); checking a parity bit corresponding to the sub block unit on the last position of the H matrix when the calculated parity bit is not right(903,904); searching a parity bit part where a result of checking the parity bit is represented as 1(905); performing an XOR operation of the parity bit part into which the arbitrary binary number is inserted and the parity bit part obtained through a simultaneous equation between the parity bits per the sub block unit(906); and determining, the parity bit satisfying a condition that a result of multiplying the H matrix by a code word vector encoded by the H matrix corresponds to 0, as the parity bit of the H matrix(907).

    Abstract translation: 提供了通过使用检查预定奇偶校验的结果对LDPC（低密度奇偶校验）码进行编码的方法，以通过稍微改变H矩阵的结构来有效地对LDPC码进行编码。 通过使用检查预定奇偶校验的结果对LDPC码进行编码的方法包括以下步骤：基于H矩阵形成具有双对角线结构的奇偶校验位校验矩阵（901）; 通过将任意二进制数插入子块单元（902）来计算所有奇偶校验位; 当所计算的奇偶校验位不正确时，检查与H矩阵的最后位置相对应的子块单元的奇偶校验位（903,904）; 搜索奇偶校验位部分，其中检查奇偶校验位的结果被表示为1（905）; 执行插入任意二进制数的奇偶校验位部分的异或运算和通过每个子块单元（906）的奇偶校验位之间的联立方程获得的奇偶校验位部分; 并且确定满足由H矩阵编码的码字向量将H矩阵乘以H的矩阵对应于0的条件的奇偶校验位作为H矩阵的奇偶校验位（907）。

    다차원 심볼 검출 방법 및 이를 적용한 연판정 방법
    164.
    发明公开
    다차원 심볼 검출 방법 및 이를 적용한 연판정 방법 失效
    方法检测多维符号及其软判决

    公开(公告)号：KR1020070061734A

    公开(公告)日：2007-06-14

    申请号：KR1020060036574

    申请日：2006-04-24

    Applicant: 한국전자통신연구원

    Inventor： 박기윤 ,  오종의 ,  정민호 ,  박형준 ,  권동승 ,  방승찬

    IPC: H04B7/04

    CPC classification number: H04L25/067 ,  H04B7/0413 ,  H04L1/02

    Abstract: A method for detecting a multi-dimensional symbol and a soft decision employing the same are provided to enable parallel processing by independently performing soft decision on each bit of a symbol. Reception symbol vectors and estimated channel models are received from a demodulator and a channel estimator(S110). The first transmittable arbitrary multi-dimensional symbol is initialized(S120). The rate of change of a distance function with respect to each symbol constituting the first multi-dimensional symbol is calculated(S130). A certain symbol having a negative rate of change is selected and updated in the opposite direction to the calculated rate of change(S140). It is checked whether the first multi-dimensional symbol setting step, a step of calculating the rate of change, and a updating step should be repeatedly performed(S150). When the repeated operation is not performed, the second multi-dimensional symbol including the updated symbol is outputted(S160).

    Abstract translation: 提供了一种用于检测多维符号的方法和采用该方法的软判决，以通过对符号的每个比特独立地执行软判决来实现并行处理。 从解调器和信道估计器接收接收符号向量和估计信道模型（S110）。 第一可发送的任意多维符号被初始化（S120）。 计算距离函数相对于构成第一多维符号的每个符号的变化率（S130）。 以与计算出的变化率相反的方向选择并更新具有负的变化率的某个符号（S140）。 检查是否应重复执行第一多维符号设置步骤，计算变化率的步骤和更新步骤（S150）。 当不执行重复操作时，输出包括更新符号的第二多维符号（S160）。

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