公开(公告)号：US20110154168A1

公开(公告)日：2011-06-23

申请号：US12971180

申请日：2010-12-17

Applicant: Yong Ho LEE ,  Dae lg CHANG ,  Ho Jin LEE

Inventor： Yong Ho LEE ,  Dae lg CHANG ,  Ho Jin LEE

IPC: G06F11/10

CPC classification number: H04L1/0057 ,  H03M13/116 ,  H03M13/1185 ,  H03M13/6527 ,  H03M13/6544 ,  H04L1/0041

Abstract: Disclosed is an effective high-speed encoding method using a parity-check matrix proposed in an IEEE 802.1x standard for high-speed low-density parity-check encoding. In the prior art, encoding was performed by blocking and dividing the parity-check matrix of the LDPC code and through relevant matrix equations, or encoding was performed by an encoding apparatus that divides a matrix multiplication operation of a generated matrix acquired by using an arbitrary parity-check matrix of a quasi-cyclic (QC) LDPC code and information vectors into two sequential steps and implements each step as a cyclic shift-register. Unlike the prior art, the present invention provides an effective high-speed encoding method having low additional complexity by using a quasi-cyclic characteristic of a parity-check matrix as well as an encoding method through generation of a temporary parity bit, generation of a correction bit, and correction of a parity bit by using the parity-check matrix having a dual-diagonal parity structure proposed in the standard.

Abstract translation: 公开了一种使用IEEE 802.1x标准中提出的用于高速低密度奇偶校验编码的奇偶校验矩阵的有效的高速编码方法。 在现有技术中，通过阻塞和划分LDPC码的奇偶校验矩阵并通过相关的矩阵方程来执行编码，或者由编码装置执行编码，该编码装置将通过使用任意的所获得的生成矩阵的矩阵乘法运算 准循环（QC）LDPC码的奇偶校验矩阵和信息向量分成两个连续步骤，并且实现每个步骤作为循环移位寄存器。 与现有技术不同，本发明通过使用奇偶校验矩阵的准循环特性以及通过生成临时奇偶校验位的编码方法来提供具有低附加复杂度的有效高速编码方法， 校正位，以及通过使用在标准中提出的具有双对角奇偶校验结构的奇偶校验矩阵来校正奇偶校验位。

公开(公告)号：US20100158138A1

公开(公告)日：2010-06-24

申请号：US12554429

申请日：2009-09-04

Applicant: Joon-Gyu RYU ,  Dae-lg CHANG ,  Ho-Jin LEE

Inventor： Joon-Gyu RYU ,  Dae-lg CHANG ,  Ho-Jin LEE

IPC: H04H20/74 ,  H04B1/034 ,  H04L27/00

CPC classification number: H04B7/18534 ,  H04B7/18513 ,  H04B7/18523 ,  H04L27/183 ,  H04L27/3488

Abstract: Provided is a satellite broadcasting terminals. The satellite broadcasting terminal includes: a first antenna receiving a radio signal of a first band or a second band; a second antenna receiving a radio signal of a third band; a first stream demodulating unit demodulating a first stream signal received through the first band; a second stream demodulating unit demodulating a second stream signal received through the second band; a playing unit playing the demodulated first or second stream signal; and a gap filler receiving unit selectively providing the first stream signal to the first stream demodulating unit in response to a radio signal intensity of the third band, the first stream signal being received through the third band.

Abstract translation: 提供卫星广播终端。 卫星广播终端包括：接收第一频带或第二频带的无线电信号的第一天线; 接收第三频带的无线电信号的第二天线; 解调通过第一频带接收的第一流信号的第一流解调单元; 解调通过第二频带接收的第二流信号的第二流解调单元; 播放单元播放解调的第一或第二流信号; 间隙填充接收单元响应于第三频带的无线电信号强度，选择性地将第一流信号提供给第一流解调单元，第一流信号通过第三频带接收。

公开(公告)号：US20110164565A1

公开(公告)日：2011-07-07

申请号：US12996925

申请日：2008-11-05

Applicant: Nam Kyung Lee ,  Dae Lg Chang ,  Ho Jin Lee ,  Dong Jun Lee

Inventor： Nam Kyung Lee ,  Dae Lg Chang ,  Ho Jin Lee ,  Dong Jun Lee

IPC: H04W40/00

CPC classification number: H04W40/28 ,  H04L45/123 ,  H04L45/125

Abstract: A method of routing a wireless network is provided. The method is performed by each of a group of nodes and includes: receiving a routing request signal; determining whether a node itself is a destination node, by referring to a traffic distribution table showing traffic throughput of the group of nodes and an intermediate-node weight table showing weights of intermediate nodes on all paths between the group of nodes and a source node, wherein a route path is selected by referring to the weights of intermediate nodes; and when it is determined that the node itself is the destination node transmitting a routing response signal to the source node that has transmitted the routing request signal, and receiving a packet from the source node, wherein the transmitting and receiving are performed by the determined destination node. By using the method, traffic in wireless network extreme communications can be distributed at intermediate nodes as well as at destination nodes. Therefore, all the networks can be effectively used in extreme circumstances.

Abstract translation: 提供了一种路由无线网络的方法。 该方法由一组节点中的每一个执行，并且包括：接收路由请求信号; 通过参考示出节点组的流量的流量分布表和表示节点组和源节点之间的所有路径上的中间节点的权重的中间节点权重表来确定节点本身是否是目的地节点， 其中通过参考中间节点的权重来选择路由路径; 并且当确定节点本身是目的地节点向已经发送了路由请求信号的源节点发送路由响应信号，并且从源节点接收分组时，由确定的目的地执行发送和接收 节点。 通过使用该方法，可以在中间节点以及目的地节点处分配无线网络极端通信中的业务。 因此，所有网络都可以在极端情况下有效使用。

公开(公告)号：US20110116587A1

公开(公告)日：2011-05-19

申请号：US12942350

申请日：2010-11-09

Applicant: Joon-Gyu RYU ,  Dae-lg Chang

Inventor： Joon-Gyu RYU ,  Dae-lg Chang

IPC: H03D3/24 ,  H03L7/08

CPC classification number: H03L7/185 ,  H03L7/099 ,  H03L2207/12

Abstract: A phase locked loop includes: a loop filter; a voltage controlled oscillating unit configured to output a frequency varying according to an output voltage of the loop filter; a frequency down-converting unit configured to down-convert an output frequency of the voltage controlled oscillating unit according to a band of the output frequency of the voltage controlled oscillating unit; and a frequency divider configured to divide a frequency down-converted by the frequency down-converting unit. The output frequency of the voltage controlled oscillating unit varies according to the output voltage of the loop filter and a control signal compensating the frequency down-converted by the frequency down-converting unit.

Abstract translation: 锁相环包括：环路滤波器; 电压控制振荡单元，被配置为输出根据所述环路滤波器的输出电压而变化的频率; 降频转换单元，被配置为根据压控振荡单元的输出频率的频带对压控振荡单元的输出频率进行下变频; 以及分频器，被配置为对由下变频单元进行下变频的频率进行分频。 电压控制振荡单元的输出频率根据环路滤波器的输出电压和补偿由下变频单元下变频的频率的控制信号而变化。

公开(公告)号：US20100322366A1

公开(公告)日：2010-12-23

申请号：US12518103

申请日：2007-10-30

Applicant: Pan-Soo Kim ,  Dae-lg Chang ,  Deock-Gil Oh ,  Seokheon Kang ,  Deokchang Kang ,  Wonjin Sung

Inventor： Pan-Soo Kim ,  Dae-lg Chang ,  Deock-Gil Oh ,  Seokheon Kang ,  Deokchang Kang ,  Wonjin Sung

IPC: H04L7/04

CPC classification number: H04L27/2656 ,  H04L7/042 ,  H04L27/2675

Abstract: Provided is a method for detecting frame sync and frame structure in a satellite broadcasting system, which acquires an estimated value for detecting frame structure and frame sync and overcomes distortion of correlation analysis values by summing differential correlation values for SOF positions in consideration of the variable frame length, and selecting a maximum value in a channel environment with low signal-to-noise ratio and high frequency error. SOF is a sync word indicating the start point of a frame. The method includes the steps of: acquiring SOF differential correlation value sequences; acquiring sums (di,t) of the correlation values normalized for SOF positions based on the number of symbols per frame by using the above-generated SOF differential correlation value sequences; and selecting a maximum value (dz,x) among the sums of correlation values, detecting z as a frame sync position, and detecting x as a frame structure index.

Abstract translation: 提供了一种用于检测卫星广播系统中的帧同步和帧结构的方法，其获取用于检测帧结构和帧同步的估计值，并通过将SOF位置的差分相关值相加考虑到可变帧来克服相关分析值的失真 长度，并在低信噪比和高频误差的信道环境中选择最大值。 SOF是指示帧起始点的同步字。 该方法包括以下步骤：获取SOF差分相关值序列; 通过使用上述生成的SOF差分相关值序列，基于每帧的符号数，获取针对SOF位置归一化的相关值的和（di，t） 并且选择相关值之和中的最大值（dz，x），检测z作为帧同步位置，并且检测x作为帧结构索引。