公开(公告)号：US08718191B2

公开(公告)日：2014-05-06

申请号：US13033202

申请日：2011-02-23

申请人： Il-Gu Lee ,  In-Kyeong Choi ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Eun-Young Choi ,  Sok-Kyu Lee

发明人： Il-Gu Lee ,  In-Kyeong Choi ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Eun-Young Choi ,  Sok-Kyu Lee

IPC分类号： H04L27/20

CPC分类号： H04L27/18 ,  H04L27/0008

摘要： A method for transmitting, by a transmitting terminal, data to a receiving terminal in a wireless communication system includes: generating a first detection field including symbols modulated by using a BPSK data tone; generating a second detection field including symbols modulated such that an even numbered subcarrier and an odd numbered subcarrier have a phase difference of 90 degrees; generating a data packet including the first detection field, the second detection field, and the data; and transmitting the data packet.

摘要翻译： 一种在无线通信系统中由发送终端向接收终端发送数据的方法包括：生成包括通过使用BPSK数据音调调制的符号的第一检测字段; 产生包括被调制的符号的第二检测场，使得偶数副载波和奇数副载波具有90度的相位差; 生成包括第一检测区域，第二检测区域和数据的数据分组; 并发送数据包。

公开(公告)号：US09042473B2

公开(公告)日：2015-05-26

申请号：US13371299

申请日：2012-02-10

申请人： Jong-Ee Oh ,  Hee-Jung Yu ,  Yu-Ro Lee ,  In-Kyeong Choi ,  Sok-Kyu Lee

发明人： Jong-Ee Oh ,  Hee-Jung Yu ,  Yu-Ro Lee ,  In-Kyeong Choi ,  Sok-Kyu Lee

IPC分类号： H04B7/08 ,  H04B7/04 ,  H04B7/06

CPC分类号： H04B7/0854 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0663

摘要： Disclosed is an apparatus for receiving data in a communication system, including: a receiving unit configured to receive data transmitted from an access point (AP) by a multi-input multi-output (MIMO) scheme; a detecting unit configured to detect a data stream of the received data using an LQ decomposition scheme; a generating unit configured to generate channel information regarding the data stream; and a transmitting unit configured to feedback the channel information to the AP.

摘要翻译： 公开了一种用于在通信系统中接收数据的装置，包括：接收单元，被配置为通过多输入多输出（MIMO）方案接收从接入点（AP）发送的数据; 检测单元，被配置为使用LQ分解方案来检测所接收的数据的数据流; 生成单元，被配置为生成关于数据流的频道信息; 以及发送单元，被配置为将所述信道信息反馈给所述AP。

公开(公告)号：US20120207236A1

公开(公告)日：2012-08-16

申请号：US13371299

申请日：2012-02-10

申请人： Jong-Ee Oh ,  Hee-Jung Yu ,  Yu-Ro Lee ,  In-Kyeong Choi ,  Sok-Kyu Lee

发明人： Jong-Ee Oh ,  Hee-Jung Yu ,  Yu-Ro Lee ,  In-Kyeong Choi ,  Sok-Kyu Lee

IPC分类号： H04B7/02

CPC分类号： H04B7/0854 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0663

摘要： Disclosed is an apparatus for receiving data in a communication system, including: a receiving unit configured to receive data transmitted from an access point (AP) by a multi-input multi-output (MIMO) scheme; a detecting unit configured to detect a data stream of the received data using an LQ decomposition scheme; a generating unit configured to generate channel information regarding the data stream; and a transmitting unit configured to feedback the channel information to the AP.

摘要翻译： 公开了一种用于在通信系统中接收数据的装置，包括：接收单元，被配置为通过多输入多输出（MIMO）方案接收从接入点（AP）发送的数据; 检测单元，被配置为使用LQ分解方案来检测所接收的数据的数据流; 生成单元，被配置为生成关于数据流的频道信息; 以及发送单元，被配置为将所述信道信息反馈给所述AP。

公开(公告)号：US08107563B2

公开(公告)日：2012-01-31

申请号：US12177655

申请日：2008-07-22

申请人： Chanho Yoon ,  Il-Gu Lee ,  Jung-Bo Son ,  Eun-Young Choi ,  Yu-Ro Lee ,  Sok-Kyu Lee

发明人： Chanho Yoon ,  Il-Gu Lee ,  Jung-Bo Son ,  Eun-Young Choi ,  Yu-Ro Lee ,  Sok-Kyu Lee

IPC分类号： H04L27/14

CPC分类号： H04B7/0851 ,  H04B7/0669 ,  H04L1/0048 ,  H04L1/0631 ,  H04L25/067 ,  H04L27/2601

摘要： Provided are a receiving apparatus for a multiple input multiple output (MIMO) system and a method thereof. The receiving apparatus includes a QR decomposing unit for calculating a single (Q) matrix vector and an upper triangle (R) matrix vector for a receiving signal vector; a first symbol estimation unit for estimating predetermined symbols using the calculated Q matrix vector and R matrix vector; a log likelihood ratio (LLR) calculating unit for calculating log likelihood ratios of unit bits for the estimated symbols; an interference removing unit for receiving a decoded signal that is decided using the calculated log likelihood ratios and removing interference from the receiving signal vector; and a second symbol estimation unit for linearly estimating remaining symbols for the interference removed signal.

摘要翻译： 提供了一种用于多输入多输出（MIMO）系统的接收装置及其方法。 接收装置包括用于计算接收信号矢量的单（Q）矩阵向量和上三角（R）矩阵向量的QR分解单元; 第一符号估计单元，用于使用所计算的Q矩阵向量和R矩阵向量来估计预定符号; 对数似然比（LLR）计算单元，用于计算估计符号的单位比特的对数似然比; 干扰去除单元，用于接收使用所计算的对数似然比决定的解码信号，并从接收信号矢量中去除干扰; 以及用于线性估计用于干扰去除信号的剩余符号的第二符号估计单元。

公开(公告)号：US08675556B2

公开(公告)日：2014-03-18

申请号：US13046423

申请日：2011-03-11

申请人： Yu-Ro Lee ,  Yun-Joo Kim ,  Jong-Ee Oh ,  Minho Cheong ,  Sok-Kyu Lee

发明人： Yu-Ro Lee ,  Yun-Joo Kim ,  Jong-Ee Oh ,  Minho Cheong ,  Sok-Kyu Lee

IPC分类号： H04W4/00

CPC分类号： H04W72/005 ,  H04W4/08

摘要： Provided a method for simultaneously transmitting data frames to a plurality of STAs in a multi-user based wireless communication system. The method includes: requesting sounding or feedback for the plurality of STAs by using a first control information frame containing first group information; receiving responses to the sounding or feedback request; reconfiguring the plurality of STAs composing the first group into a plurality of second groups on the basis of the responses such that the sum of maximum transport streams of the respective STAs composing one group becomes equal to or less than the maximum number of streams transmitted by an AP; transmitting a second control information frame containing second group information on the respective second groups to the plurality of STAs composing the first group; and transmitting data frames by using the second group information.

摘要翻译： 提供了一种用于在基于多用户的无线通信系统中同时向多个STA发送数据帧的方法。 该方法包括：通过使用包含第一组信息的第一控制信息帧来请求对多个STA的探测或反馈; 接收响应声音或反馈请求; 基于所述响应，将构成第一组的多个STA重新配置成多个第二组，使得构成一组的各个STA的最大传输流之和变得等于或小于由一 AP; 将包含关于各个第二组的第二组信息的第二控制信息帧发送到构成第一组的多个STA; 以及通过使用第二组信息发送数据帧。

公开(公告)号：US08422419B2

公开(公告)日：2013-04-16

申请号：US12615557

申请日：2009-11-10

申请人： Yun-Joo Kim ,  Jeeyon Choi ,  Yoo-Seung Song ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Minho Cheong ,  Sok-Kyu Lee

发明人： Yun-Joo Kim ,  Jeeyon Choi ,  Yoo-Seung Song ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Minho Cheong ,  Sok-Kyu Lee

IPC分类号： H04B7/14 ,  H04B7/15 ,  H04B3/36 ,  H04W4/00

CPC分类号： H04W84/12

摘要： Provided are an apparatus and method for providing a WLAN service using multiple channels. The wireless local area network (WLAN) service apparatus includes a service request receiver configured to receive service request information from a first wireless terminal accessed through a first channel, a data receiver configured to receive data from a first access point accessed through a second channel according to the service request information, a data transmitter configured to transmit the data to the first wireless terminal in a predetermined service area, and an access controller configured to control the first wireless terminal and the first access point to be accessed through different channels.

摘要翻译： 提供了一种用于使用多个信道来提供WLAN服务的装置和方法。 无线局域网（WLAN）服务设备包括：服务请求接收器，被配置为从通过第一信道访问的第一无线终端接收服务请求信息;数据接收器，被配置为从通过第二信道访问的第一接入点接收数据， 服务请求信息;数据发送器，被配置为将数据发送到预定服务区域中的第一无线终端;以及接入控制器，被配置为控制要通过不同信道访问的第一无线终端和第一接入点。

公开(公告)号：US08396102B2

公开(公告)日：2013-03-12

申请号：US12808179

申请日：2008-11-28

申请人： Minho Cheong ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee

发明人： Minho Cheong ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee

IPC分类号： H04B1/38

CPC分类号： H04B1/40

摘要： Provided is a transmitter and a receiver for a high-throughput wireless communication system. The transmitter includes a baseband transmitter, a DIF transmitter, and a RF transmitter. The baseband transmitter performs a MAC protocol process on transmission signals and reception signals and processes the transmission signals by dividing an entire transmission band into n bands in a physical layer process of the transmission data, where n is a natural number. The DIF transmitter combines transmission signals of each band from the baseband transmitter and outputs m channel signals corresponding to a number of transmission antennas, where m is a natural number. The RF transmitter modulates each of the channel signals transferred from the DIF transmitter and transmits the modulated signals through m antennas.

摘要翻译： 提供了一种用于高吞吐量无线通信系统的发射机和接收机。 发射机包括基带发射机，DIF发射机和RF发射机。 基带发射机对传输信号和接收信号执行MAC协议处理，并且通过在传输数据的物理层处理中将整个传输频带划分成n个频带来处理传输信号，其中n是自然数。 DIF发射机组合来自基带发射机的每个频带的传输信号，并输出对应于多个发射天线的m个信道信号，其中m是自然数。 RF发射机调制从DIF发射机传送的每个信道信号，并通过m个天线发送调制信号。

公开(公告)号：US20100037119A1

公开(公告)日：2010-02-11

申请号：US12517455

申请日：2007-12-05

申请人： Jong-Ee Oh ,  Yu-Ro Lee ,  Chanho Yoon ,  Minho Cheong ,  Sok-Kyu Lee ,  Yoo-Seung Song ,  Younggyun Kim

发明人： Jong-Ee Oh ,  Yu-Ro Lee ,  Chanho Yoon ,  Minho Cheong ,  Sok-Kyu Lee ,  Yoo-Seung Song ,  Younggyun Kim

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/1122 ,  H03M13/1117 ,  H03M13/112 ,  H03M13/6527 ,  H03M13/6544 ,  H03M13/6577 ,  H03M13/658 ,  H03M13/6583

摘要： An apparatus and method for updating a check node of a low-density parity check (LDPC) code in order to decode the LDPC code are provided. The method includes the operations of: (a) obtaining a first bit of a first minimum value among input values, the number of input values being equal to the number of degrees of the check node, by performing an AND operation on first bits of the input values, the first bits being most significant bits of the input values; (b) obtaining result values by switching and sequentially performing an XOR operation and an OR operation on the first bit of the first minimum value and each of the first bits of the input values; and (c) performing operations (a) and (b) on the result values set as input values and performing operations (a) and (b) a number of times corresponding to the number of bits of each input value, that is, repeating until last bits are set as input values, to thereby obtain the first minimum value, the last bits being least significant bits of the input values. Accordingly, the complexity of hardware is reduced, and super high-speed processing is possible.

摘要翻译： 提供了一种用于更新低密度奇偶校验（LDPC）码的校验节点以便解码LDPC码的装置和方法。 该方法包括以下操作：（a）通过对所述校验节点的第一比特执行“与”运算，获得输入值中的第一最小值的第一比特，输入值的数目等于校验节点的度数。 输入值，第一位是输入值的最高有效位; （b）通过对所述第一最小值的所述第一位和所述输入值的所述第一位中的每一个进行切换和顺序执行异或运算和或运算来获得结果值; 和（c）对设置为输入值的结果值执行操作（a）和（b），并且执行操作（a）和（b）与每个输入值的位数相对应的次数，即重复 直到最后的位被设置为输入值为止，从而获得第一最小值，最后的位是输入值的最低有效位。 因此，硬件的复杂度降低，超高速处理成为可能。

公开(公告)号：US20100031116A1

公开(公告)日：2010-02-04

申请号：US12443688

申请日：2007-10-01

申请人： Chan-Ho Yoon ,  Jong-Ee Oh ,  Min-Ho Cheong ,  Yu-Ro Lee ,  Sok-Kyu Lee ,  Hee-Jung Yu ,  Seung-Chan Bang

发明人： Chan-Ho Yoon ,  Jong-Ee Oh ,  Min-Ho Cheong ,  Yu-Ro Lee ,  Sok-Kyu Lee ,  Hee-Jung Yu ,  Seung-Chan Bang

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/116 ,  H03M13/1185 ,  H03M13/1188

摘要： There is provided to a method for encoding an LDPC (Low Density Parity Check) code using the result of checking a previously specified parity, including the steps of: forming a parity bit check matrix having a dual diagonal structure consisting of (N-K) rows for check nodes and (N-K) columns on the basis of the H matrix; calculating the values of all the parity bits by inserting a given binary value in sub-blocks, with the parity bit check matrix formed on the H matrix; if the values of the parity bits are incorrect, checking the parity bit corresponding to the sub-block located in the last part of the H matrix; searching the parity bit parts where the parity bit check result is represented as “1”; performing an XOR operation in sub-blocks on the parity bit part obtained through a simultaneous equation between the parity bits of the searched parity bit parts and the parity bit parts; and determining the value of the parity bit satisfying the condition that the value obtained by multiplying the H matrix by a code word vector.

摘要翻译： 提供了一种使用检查先前指定的奇偶校验的结果来编码LDPC（低密度奇偶校验）码的方法，包括以下步骤：形成具有由（NK）行组成的双对角线结构的奇偶校验位校验矩阵，用于 基于H矩阵检查节点和（NK）列; 通过在H块中形成奇偶校验位校验矩阵，在子块中插入给定的二进制值来计算所有奇偶校验位的值; 如果奇偶校验位的值不正确，则检查与位于H矩阵的最后部分中的子块相对应的奇偶校验位; 搜索奇偶校验位检查结果被表示为“1”的奇偶校验位部分; 在通过搜索到的奇偶校验位部分的奇偶校验位与奇偶校验位部分之间的联立方程获得的奇偶校验位部分的子块中执行异或运算; 以及确定所述奇偶校验位的值满足将所述H矩阵乘以码字矢量而获得的值的条件。

公开(公告)号：US09246563B2

公开(公告)日：2016-01-26

申请号：US13504925

申请日：2010-10-30

申请人： Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee

发明人： Yu-Ro Lee ,  Jong-Ee Oh ,  Sok-Kyu Lee

IPC分类号： H04W4/00 ,  H04B7/04 ,  H04L25/02

CPC分类号： H04B7/0452 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/08 ,  H04L25/0204

摘要： The present invention particularly relates to a method and an apparatus for improving the efficiency of data transmission in a multi-user wireless transmission system. According to one embodiment of the present invention, the method, which is a transmission method of data in a multi-user wireless communication system, comprises the steps of: estimating channel states of each terminal through sounding or feedback information received from the terminals, and selecting terminals to which individual data are to be transmitted at the same time; determining a signal to noise ratio of the selected terminals, and calculating a precoding matrix; calculating a modulation and coding scheme (MCS) of each terminal and the number of symbols of data fields in accordance with the MCS of each terminal; dividing an area according to the number of terminals to which the data fields are to be simultaneously transmitted, if there are two or more selected terminals; and recalculating a reception signal to interference and noise ratio (SINR) for each area of each terminal, configuring a packet by resetting the MCS according to the recalculated SINR, and transmitting the configured packet.

摘要翻译： 本发明特别涉及一种用于提高多用户无线传输系统中的数据传输效率的方法和装置。 根据本发明的一个实施例，作为多用户无线通信系统中的数据的传输方法的方法包括以下步骤：通过从终端接收的探测或反馈信息来估计每个终端的信道状态，以及 选择要同时发送单个数据的终端; 确定所选终端的信噪比，并计算预编码矩阵; 根据每个终端的MCS计算每个终端的调制和编码方案（MCS）和数据字段的符号数; 如果存在两个或更多个所选择的终端，则根据要同时发送数据字段的终端数量划分一个区域; 并重新计算每个终端的每个区域的接收信号与干扰和噪声比（SINR），通过根据重新计算的SINR重新设置MCS来配置分组，并发送配置的分组。