公开(公告)号：USRE45466E1

公开(公告)日：2015-04-14

申请号：US13422300

申请日：2012-03-16

Applicant: Soo-Jung Jung ,  Kwang-Soon Kim ,  Byung-Han Ryu

Inventor： Soo-Jung Jung ,  Kwang-Soon Kim ,  Byung-Han Ryu

IPC: H04J3/12 ,  H04J11/00

CPC classification number: H04W72/1294 ,  H04J11/0026 ,  H04L1/1671 ,  H04L5/023 ,  H04L27/261 ,  H04W72/048 ,  H04W72/14 ,  H04W74/002 ,  H04W74/006 ,  H04W74/0833 ,  H04W74/0866

Abstract: Disclosed is a random access data transmission system and method using OFDMA. The system includes a scheduling ID into an access grant on a preamble for a random access, and transmits it together with an acknowledgment or a non-acknowledgment of the preamble, a base station uses the scheduling ID to notify the mobile station of a random access data transmittable time and a data transmission channel through a control channel, and the mobile station transmits a preamble in advance. After receiving a transmission assignment instruction corresponding to a scheduling ID through the control channel, the mobile station transmits random access data through an assigned channel.

Abstract translation: 公开了使用OFDMA的随机接入数据传输系统和方法。 该系统将调度ID包括在用于随机接入的前同步码上的接入许可中，并与前导码的确认或不确认一起发送，基站使用调度ID向移动台通知随机接入 数据发送时间和通过控制信道的数据传输信道，并且移动台预先发送前同步码。 在通过控制信道接收到与调度ID相对应的发送分配指令之后，移动站通过分配的信道发送随机接入数据。

公开(公告)号：US08422320B2

公开(公告)日：2013-04-16

申请号：US13243110

申请日：2011-09-23

Applicant: Kwang Soon Kim ,  Bok Rim Ko

Inventor： Kwang Soon Kim ,  Bok Rim Ko

IPC: G11C7/00

CPC classification number: G11C29/022 ,  G11C29/14 ,  G11C29/46

Abstract: A data strobe signal generation circuit includes: an enable signal generation unit configured to decode a test signal and generate an enable signal; an internal clock generation unit configured to generate a rising clock signal and a falling clock signal in response to the test signal; and a data strobe signal output unit configured to selectively buffer first and second powers in response to the rising clock signal and the falling clock signal, and output a data strobe signal.

Abstract translation: 数据选通信号产生电路包括：使能信号生成单元，被配置为对测试信号进行解码并产生使能信号; 内部时钟生成单元，被配置为响应于测试信号产生上升时钟信号和下降时钟信号; 以及数据选通信号输出单元，被配置为响应于上升时钟信号和下降时钟信号选择性地缓冲第一和第二功率，并且输出数据选通信号。

公开(公告)号：US20110059700A1

公开(公告)日：2011-03-10

申请号：US12874629

申请日：2010-09-02

Applicant: Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Kyu-Jong Hwang ,  Kyung-Hi Chang

Inventor： Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Kyu-Jong Hwang ,  Kyung-Hi Chang

IPC: H04B7/00

CPC classification number: H04L1/0003 ,  H04B7/0417 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0618 ,  Y02D70/1244 ,  Y02D70/142 ,  Y02D70/444

Abstract: Disclosed is an adaptive transmit and receive method and device in a multiple-antenna wireless communication system. A transmit mode comprises different main transmit modes each of which includes one or both of a sub-transmit mode based on STBC and a sub-transmit mode based on SM. A receiver calculates an STBC performance parameter and a SM performance parameter, and a transmitter uses the parameters to determine a main transmit mode with maximum data rates and select a sub-transmit mode for minimizing power consumption. The transmitter channel-encodes, modulates and antenna-maps input data according to the selected transmit mode, and outputs results to the receiver. The receiver antenna/symbol-demodulates and channel-decodes the received data.

Abstract translation: 公开了一种在多天线无线通信系统中的自适应发射和接收方法和装置。 发送模式包括不同的主发送模式，每个发送模式包括基于STBC的子发送模式和基于SM的子发送模式中的一个或两个。 接收机计算STBC性能参数和SM性能参数，发射机使用参数来确定具有最大数据速率的主发射模式，并选择用于最小化功耗的子发射模式。 发射机根据选择的发射模式对输入数据进行信道编码，调制和天线映射，并将结果输出到接收机。 接收机天线/符号解调并对接收的数据进行通道解码。

公开(公告)号：US07848296B2

公开(公告)日：2010-12-07

申请号：US11438667

申请日：2006-05-23

Applicant: Hee-Soo Lee ,  Jae-Young Ahn ,  Young-Jo Ko ,  Du-Ho Rhee ,  Kwang-Soon Kim

Inventor： Hee-Soo Lee ,  Jae-Young Ahn ,  Young-Jo Ko ,  Du-Ho Rhee ,  Kwang-Soon Kim

IPC: H04Q7/00

CPC classification number: H04W52/262 ,  H04B17/24 ,  H04B17/26 ,  H04B17/336 ,  H04B17/373 ,  H04L1/0026 ,  H04L25/0232 ,  H04L27/2601 ,  H04W52/226 ,  H04W52/247 ,  H04W52/346

Abstract: Provided are an apparatus and method for generating channel information and apparatus and method for adaptive transmission employing the same. The channel information generation apparatus comprises an estimator for estimating current channel information of a multi-carrier received signal for each path, a short-period channel information generator for predicting channel information after a predetermined minimum transmission delay time based on the current channel information estimated by the estimator to generate short-period channel information, and a long-period channel information generator for deriving statistic information of error between the channel information predicted by the short-period channel information generator and actual channel information at the time of transmission to produce long-period channel information. The invention is applied to mobile communication systems using multi-carrier.

Abstract translation: 提供一种用于产生信道信息的装置和方法，以及采用该信道信息的自适应传输的装置和方法。 信道信息生成装置包括：估计器，用于估计每个路径的多载波接收信号的当前信道信息;短周期信道信息发生器，用于基于由当前信道信息估计的预定最小传输延迟时间来预测信道信息; 用于产生短周期信道信息的估计器和用于导出由短周期信道信息发生器预测的信道信息与传输时的实际信道信息之间的误差的统计信息的长周期信道信息发生器， 期间频道信息。 本发明应用于使用多载波的移动通信系统。

公开(公告)号：US07627050B2

公开(公告)日：2009-12-01

申请号：US10848921

申请日：2004-05-19

Applicant: Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

Inventor： Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

IPC: H04B7/02

CPC classification number: H04L1/0026 ,  H04B7/0626 ,  H04B7/066 ,  H04L1/0693 ,  H04W52/241 ,  H04W52/247

Abstract: Disclosed is an adaptive transmitting and receiving device and method using frequency division duplexing. A transmitter transmits a preamble or a pilot to a receiver. The receiver estimates a received SNR from the preamble or pilot, determines parameters (received log likelihood ratio parameters) of determining the distribution of the received log likelihood ratio, and feeds them back to the transmitter. The transmitter adaptively determines an antenna method, a modulation method, and a transmit power according to the parameters, and adaptively transmits traffic data to the receiver according to the determined antenna method, the modulation method, and the transmit power.

Abstract translation: 公开了一种使用频分双工的自适应发射和接收装置和方法。 发射机向接收机发射前导码或导频。 接收机估计来自前置码或导频的接收到的SNR，确定确定接收到的对数似然比的分布的参数（接收对数似然比参数），并将其馈送给发射机。 发射机根据参数自适应地确定天线方法，调制方式和发射功率，并根据确定的天线方法，调制方式和发射功率自适应地将业务数据发送到接收机。

公开(公告)号：US07460466B2

公开(公告)日：2008-12-02

申请号：US10539166

申请日：2003-06-02

Applicant: Sok-Kyu Lee ,  Kwang-Soon Kim ,  Kyung-Hi Chang

Inventor： Sok-Kyu Lee ,  Kwang-Soon Kim ,  Kyung-Hi Chang

IPC: H04Q7/00

CPC classification number: H04J11/0026 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/006 ,  H04L5/0085 ,  H04L5/06 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2602

Abstract: Disclosed are an adaptive pilot symbol assignment method that flexibly controls the number of transmit antennas according to each user's moving speed, channel status, or user request, and assigns proper pilot symbols in the downlink of an OFDMA (Orthogonal Frequency Division Multiplexing Access) based cellular system; and a sub-carrier allocation method for high-speed mobile that allocates some sub-carriers to assign proper pilot symbols for ultrahigh-speed mobile users, and the rest of the sub-carriers to the other users to assign proper pilot symbols to the users, on the assumption that the ultrahigh-speed mobile users have a traffic volume almost insignificant to the whole traffic volume.

Abstract translation: 公开了一种根据每个用户的移动速度，信道状态或用户请求灵活地控制发射天线数量的自适应导频符号分配方法，并且在基于OFDMA（正交频分复用接入）的蜂窝小区的下行链路中分配适当的导频符号 系统; 以及用于高速移动的子载波分配方法，其分配一些子载波以为超高速移动用户分配适当的导频符号，并且将剩余的子载波分配给其他用户以向用户分配适当的导频符号 假设超高速移动用户的流量对整个流量几乎无关紧要。

公开(公告)号：US07395494B2

公开(公告)日：2008-07-01

申请号：US10964122

申请日：2004-10-12

Applicant: Sang-Hyun Lee ,  Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

Inventor： Sang-Hyun Lee ,  Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

IPC: G06F11/00

CPC classification number: H03M13/6362 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/1174 ,  H03M13/118

Abstract: An LDPC code encoding apparatus includes: a code matrix generator for generating and transmitting a parity-check matrix comprising a combination of square matrices having a unique value on each row and column thereof; an encoding means encoding block LDPC codes according to the parity-check matrix received from the code matrix generator; and a codeword selector for puncturing the encoded result of the encoding means to generate an LDPC codeword. The code matrix generator divides an information word to be encoded into block matrices having a predetermined length to generate a vector information word. The encoding means encodes the block LDPC codes using the parity-check matrix divided into the block matrices and a Tanner graph divided into smaller graphs in correspondence to the parity-check matrix.

Abstract translation: LDPC码编码装置包括：码矩阵生成器，用于生成和发送奇偶校验矩阵，该奇偶校验矩阵包括在其每一行和每一列上具有唯一值的方阵的组合; 编码装置，根据从码矩阵发生器接收到的奇偶校验矩阵，对块LDPC码进行编码; 以及用于对编码装置的编码结果进行删截以生成LDPC码字的码字选择器。 代码矩阵发生器将要编码的信息字划分成具有预定长度的块矩阵以生成向量信息字。 编码装置使用划分为块矩阵的奇偶校验矩阵和对应于奇偶校验矩阵划分成较小图的Tanner图，对块LDPC码进行编码。

公开(公告)号：US20070127359A1

公开(公告)日：2007-06-07

申请号：US10579892

申请日：2004-09-08

Applicant: Jae-Young Ahn ,  Kwang-Soon Kim

Inventor： Jae-Young Ahn ,  Kwang-Soon Kim

IPC: H04J1/00 ,  H04J11/00

CPC classification number: H04L5/023 ,  H04L27/2608 ,  H04W72/06

Abstract: Disclosed is a method for partitioning resource spaces, and allocating physical channels and power in an OFDMA-based cellular system. A resource within a slot is partitioned into resource spaces in common in a plurality of adjacent cells, and the partitioned resource spaces are partitioned into resource sets according to sizes of physical channels in the adjacent cells. The physical channels classified by predetermined characteristics are respectively assigned to the partitioned resource sets within the resource space. Further, the resource space for transmitting traffic channels between two different cells is partitioned into resource spaces so that the traffic channels in the same subspace may be collided with each other, and a power control is applied between the collided channels to control the interference from the adjacent cells.

Abstract translation: 公开了一种在基于OFDMA的蜂窝系统中分配资源空间以及分配物理信道和功率的方法。 时隙内的资源在多个相邻小区中共同划分为资源空间，并且根据相邻小区中的物理信道的大小将划分的资源空间划分为资源集。 通过预定特性分类的物理信道分别分配给资源空间内的分区资源集。 此外，用于在两个不同小区之间传输业务信道的资源空间被划分为资源空间，使得相同子空间中的业务信道可能相互冲突，并且在冲突信道之间应用功率控制以控制来自 相邻细胞。

公开(公告)号：US07103084B2

公开(公告)日：2006-09-05

申请号：US10183355

申请日：2002-06-28

Applicant: Il-Soon Jang ,  Kwang Soon Kim ,  Kyoung Seok Lee ,  Sun Sim Chun ,  Deuk Su Lyu

Inventor： Il-Soon Jang ,  Kwang Soon Kim ,  Kyoung Seok Lee ,  Sun Sim Chun ,  Deuk Su Lyu

IPC: H04B15/00 ,  H04K1/00 ,  H04L27/30

CPC classification number: H04B1/70754

Abstract: An apparatus and method of searching a preamble signal in a search window for reducing a chip size of a preamble searcher in a transceiver of a base station is enclosed. By using a plurality of small window preamble searchers searching the preamble signal in a small search window, which is a division of a large search windows of a conventional preamble searcher divided by search start times, the preamble searcher of the entire search window can be implemented and the size of semiconductor chip is reduced by implementing distributing small preamble searcher in a small semiconductor chips.

公开(公告)号：US20050149840A1

公开(公告)日：2005-07-07

申请号：US10964122

申请日：2004-10-12

Applicant: Sang-Hyun Lee ,  Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

Inventor： Sang-Hyun Lee ,  Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

IPC: G06F11/00 ,  H03M13/00 ,  H03M13/11

CPC classification number: H03M13/6362 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/1174 ,  H03M13/118

Abstract: An LDPC code encoding apparatus includes: a code matrix generator for generating and transmitting a parity-check matrix comprising a combination of square matrices having a unique value on each row and column thereof; an encoding means encoding block LDPC codes according to the parity-check matrix received from the code matrix generator; and a codeword selector for puncturing the encoded result of the encoding means to generate an LDPC codeword. The code matrix generator divides an information word to be encoded into block matrices having a predetermined length to generate a vector information word. The encoding means encodes the block LDPC codes using the parity-check matrix divided into the block matrices and a Tanner graph divided into smaller graphs in correspondence to the parity-check matrix.

Abstract translation: LDPC码编码装置包括：码矩阵生成器，用于生成和发送奇偶校验矩阵，该奇偶校验矩阵包括在其每一行和每一列上具有唯一值的方阵的组合; 编码装置，根据从码矩阵发生器接收到的奇偶校验矩阵，对块LDPC码进行编码; 以及用于对编码装置的编码结果进行删截以生成LDPC码字的码字选择器。 代码矩阵发生器将要编码的信息字划分成具有预定长度的块矩阵以生成向量信息字。 编码装置使用划分为块矩阵的奇偶校验矩阵和对应于奇偶校验矩阵划分成较小图的Tanner图，对块LDPC码进行编码。