公开(公告)号：US20090154608A1

公开(公告)日：2009-06-18

申请号：US12177655

申请日：2008-07-22

申请人： Chanho YOON ,  II-Gu LEE ,  Jung-Bo SON ,  Eun-Young CHOI ,  Yu-Ro LEE ,  Sok-Kyu LEE

发明人： Chanho YOON ,  II-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：US20090154579A1

公开(公告)日：2009-06-18

申请号：US12139904

申请日：2008-06-16

申请人： Yu-Ro LEE ,  Jung-Bo SON ,  Minho CHEONG ,  Sok-Kyu LEE

发明人： Yu-Ro LEE ,  Jung-Bo SON ,  Minho CHEONG ,  Sok-Kyu LEE

IPC分类号： H04L27/28 ,  G06F17/16

CPC分类号： H04B7/0413 ,  H04B7/0854 ,  H04L27/2601

摘要： Provided is a QR decomposition apparatus and method that can reduce the number of computers by sharing hardware in an MIMO system employing OFDM technology to simplify a structure of hardware. The QR decomposition apparatus includes a norm multiplier for calculating a norm; a Q column multiplier for calculating a column value of a unitary Q matrix to thereby produce a Q matrix vector; a first storage for storing the Q matrix vector calculated in the Q column multiplier; an R row multiplier for calculating a value of an upper triangular R matrix by multiplying the Q matrix vector by a reception signal vector; and a Q update multiplier for receiving the reception signal vector and an output of the R row multiplier, calculating an Q update value through an accumulation operation, and providing the Q update value to the Q column multiplier to calculate a next Q matrix vector.

摘要翻译： 提供了一种QR分解装置和方法，其可以通过在采用OFDM技术的MIMO系统中共享硬件来减少计算机的数量，以简化硬件的结构。 QR分解装置包括用于计算范数的标准倍数; Q列乘法器，用于计算酉矩阵的列值，从而产生Q矩阵向量; 用于存储在Q列乘法器中计算出的Q矩阵向量的第一存储器; R行乘法器，用于通过将Q矩阵向量乘以接收信号向量来计算上三角形R矩阵的值; 以及Q更新乘法器，用于接收接收信号矢量和R行乘法器的输出，通过累加操作计算Q更新值，并将Q更新值提供给Q列乘法器以计算下一个Q矩阵向量。

公开(公告)号：US20120263158A1

公开(公告)日：2012-10-18

申请号：US13458993

申请日：2012-04-27

申请人： Yu-Ro LEE ,  Jung-Bo SON ,  Sok-Kyu LEE

发明人： Yu-Ro LEE ,  Jung-Bo SON ,  Sok-Kyu LEE

IPC分类号： H04B15/00 ,  H04W84/12

CPC分类号： H04W72/0406 ,  H04B7/0452 ,  H04L1/007 ,  H04L1/0072 ,  H04L1/0606 ,  H04L1/0612 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0073 ,  H04W28/04 ,  H04W28/06 ,  H04W28/22 ,  H04W48/08 ,  H04W80/04 ,  H04W84/12

摘要： The present invention relates to a method and an apparatus for transmitting control and training symbols to improve transmission efficiency in a multi-user wireless communication system. The method for transmitting the control and training symbols in the multi-user wireless communication system according to one embodiment of the present invention comprises the steps of: determining whether a required transmission rate of each data can be satisfied through channel estimation in each of terminals when different data are simultaneously transmitted to each of the terminals; and transmitting a data frame to each of the terminals, the data frame being composed to discriminate the control and training symbols in each of the terminals using a combination of time, frequency, and code area when the required transmission rate of each data is not satisfied according to the determined result.

摘要翻译： 本发明涉及用于发送控制和训练符号以提高多用户无线通信系统中的传输效率的方法和装置。 根据本发明的一个实施例的用于在多用户无线通信系统中发送控制和训练符号的方法包括以下步骤：通过每个终端中的信道估计来确定是否可以满足每个数据的所需传输速率 不同的数据同时发送到每个终端; 并且向每个终端发送数据帧，所述数据帧被构成为当不满足每个数据的所需传输速率时，使用时间，频率和代码区域的组合来区分每个终端中的控制和训练符号 根据确定的结果。

公开(公告)号：US20110150148A1

公开(公告)日：2011-06-23

申请号：US12965282

申请日：2010-12-10

申请人： Jung-Bo SON ,  Eun-Young CHOI ,  Sok-Kyu LEE

发明人： Jung-Bo SON ,  Eun-Young CHOI ,  Sok-Kyu LEE

IPC分类号： H04L27/06

CPC分类号： H04L27/3863 ,  H04L5/0023 ,  H04L5/005 ,  H04L27/2647

摘要： The apparatus includes a radio frequency (RF) unit configured to arrange a plurality of symbols received through an antenna at a frequency domain, an analog to digital (AD) converter configured to converts the plurality of symbols arranged at the frequency domain to digital symbols, a fast Fourier transform (FFT) unit configured to transform the digital symbols through a fast Fourier transform scheme, a compensator configured to compensate a gain mismatch between an I-channel and a Q-channel of the transformed digital symbols, a mapping unit configured to the compensated digital symbols to a constellation diagram, and a detector configured to correlate the mapped symbols, extract correlation results, and detect a high throughput (HT) signal using the extracted correlation results.

摘要翻译： 该装置包括：射频（RF）单元，被配置为布置以频域通过天线接收的多个符号;模拟数字（AD）转换器，被配置为将在频域处布置的多个符号转换为数字符号; 被配置为通过快速傅里叶变换方案对数字符号进行变换的快速傅立叶变换（FFT）单元，配置为补偿经变换的数字符号的I信道和Q信道之间的增益失配的补偿器，配置为 将经补偿的数字符号转换成星座图，以及检测器，被配置为使所映射的符号相关，提取相关结果，并使用提取的相关结果检测高吞吐量（HT）信号。

公开(公告)号：US20110149766A1

公开(公告)日：2011-06-23

申请号：US12868636

申请日：2010-08-25

申请人： Eun-Young CHOI ,  Jung-Bo SON ,  Sok-Kyu LEE

发明人： Eun-Young CHOI ,  Jung-Bo SON ,  Sok-Kyu LEE

IPC分类号： H04L12/26

CPC分类号： H04W48/16 ,  H04L43/0817 ,  H04W72/0473 ,  H04W84/12

摘要： An association supporting apparatus in a wireless communication system includes: a transmission/reception unit configured to scan associable access points (APs) among a plurality of APs existing in a plurality of station (STA) wireless networks, and receive state information from the scanned APs; a calculation unit configured to calculate transmit opportunity (TXOP) periods with respect to the APs by using the received state information of the APs; and a determination unit configured to determine a predetermined AP among the plurality of scanned APs, considering usable power levels of the APs and the number of associable STAs during the calculated TXOP periods.

摘要翻译： 无线通信系统中的关联支持装置包括：发送/接收单元，被配置为扫描存在于多个站（STA）无线网络中的多个AP之间的相关接入点（AP），并从所扫描的AP接收状态信息 ; 计算单元，被配置为通过使用接收到的接收到的状态信息来计算关于AP的发送机会（TXOP）周期; 以及确定单元，被配置为在所计算的TXOP周期期间考虑AP的可用功率电平和可关联STA的数量来确定多个扫描AP中的预定AP。

公开(公告)号：US20090158113A1

公开(公告)日：2009-06-18

申请号：US12208006

申请日：2008-09-10

申请人： Chanho YOON ,  Jung-Bo SON ,  Hun-Sik KANG ,  Sok-Kyu LEE

发明人： Chanho YOON ,  Jung-Bo SON ,  Hun-Sik KANG ,  Sok-Kyu LEE

IPC分类号： H03M13/05 ,  G06F11/07

CPC分类号： H03M13/1188 ,  H03M13/1111 ,  H03M13/6502

摘要： Provided is an apparatus and method for encoding a Low Density Parity Check (LDPC) code using a message passing algorithm. The apparatus, includes: a parity calculating unit for operating a check node value on an input bit and a predetermined parity bit according to the message passing algorithm and calculating a parity bit; a parity correcting unit for correcting the calculated parity bit according to a parity check result of the calculated parity bit; and an output transform unit for combining the input bit and the corrected parity bit.

摘要翻译： 提供了一种使用消息传递算法对低密度奇偶校验（LDPC）码进行编码的装置和方法。 该装置包括：奇偶校验计算单元，用于根据消息传递算法操作输入比特和预定奇偶校验位上的校验节点值，并计算奇偶校验位; 奇偶校验单元，用于根据所计算的奇偶校验位的奇偶校验结果校正所计算的奇偶校验位; 以及输出变换单元，用于组合输入位和校正奇偶校验位。