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    • 1. 发明授权
    • Apparatus and method for supporting access in communication system
    • 支持通信系统接入的装置和方法
    • US08761139B2
    • 2014-06-24
    • US13336869
    • 2011-12-23
    • Minho CheongSok-Kyu Lee
    • Minho CheongSok-Kyu Lee
    • H04W4/00
    • H04W48/16H04W48/20
    • Disclosed are an apparatus and a method for supporting access for a multi user to perform communication through a multi node by efficiently using a multi channel in a communication system of a multi user environment having the multi node, in which bands usable by STAs that intend to access an access point are searched in a multi channel; a transmission band for packet transmission is determined in the searched usable bands; and access to the access point is supported through the determined transmission band, and the transmission band is determined by performing ad-hoc through an ad-hoc media access control (MAC) protocol in the searched usable bands.
    • 公开了一种用于支持多用户的访问以通过在具有多个节点的多用户环境的通信系统中有效地使用多信道来通过多节点执行通信的装置和方法,其中可用于STA的可用频带 在多频道中搜索接入点; 在所搜索的可用频带中确定分组传输的传输频带; 并且通过确定的传输频带来支持对接入点的接入,并且通过在所搜索的可用频带中的自组织媒体接入控制(MAC)协议来执行ad-hoc来确定传输频带。
    • 2. 发明授权
    • Method of transmitting data frame to multi-user in wireless communication systems
    • 在无线通信系统中向多用户发送数据帧的方法
    • US08675556B2
    • 2014-03-18
    • US13046423
    • 2011-03-11
    • Yu-Ro LeeYun-Joo KimJong-Ee OhMinho CheongSok-Kyu Lee
    • Yu-Ro LeeYun-Joo KimJong-Ee OhMinho CheongSok-Kyu Lee
    • H04W4/00
    • H04W72/005H04W4/08
    • 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.
    • 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。
    • 4. 发明授权
    • Method and apparatus for receiving signal for MIMO system
    • 用于MIMO系统接收信号的方法和装置
    • US08406349B2
    • 2013-03-26
    • US12808726
    • 2008-06-05
    • Yuro LeeJong-Ee OhMinho CheongSok-Kyu Lee
    • Yuro LeeJong-Ee OhMinho CheongSok-Kyu Lee
    • H04L27/06
    • H04L25/03318H04L25/0242H04L25/03305H04L2025/03414H04L2025/03426H04L2025/03624
    • Provided is a method and apparatus for receiving a signal for a MIMO system. The receiving apparatus includes: a QR decomposer for calculating a unitary matrix Q, an upper triangle matrix R, and a vector size for a received signal; a multiple dimension detector for calculating a first LLR for an output of the QR decomposer through multiple dimension detection; an inverse matrix and weight calculator for calculating an inverse matrix for the upper triangle matrix R and a weight; an interference remover for regenerating a symbol for a demodulated data stream using the fist LLR and removing interference from an output vector of the QR decomposer using the regenerated symbol; and a weight zero forcing unit for performing zero forcing on the interference removed output vector from the interference remover using the inverse matrix of the upper triangle matrix R and the weight and calculating a second LLR.
    • 提供了一种用于接收MIMO系统的信号的方法和装置。 接收装置包括:QR分解器,用于计算酉矩阵Q,上三角矩阵R和接收信号的向量大小; 多维度检测器,用于通过多维度检测计算QR分解器的输出的第一LLR; 用于计算上三角矩阵R和权重的逆矩阵的逆矩阵和权重计算器; 干扰去除器,用于使用第一LLR再生用于解调数据流的符号,并使用再生符号去除来自QR分解器的输出向量的干扰; 以及加权零强制单元,用于使用上三角矩阵R和权重的逆矩阵和权重对来自干扰去除器的干扰去除输出向量执行零强制并计算第二LLR。
    • 5. 发明授权
    • Transmitter and receiver for giga-bps high-throughput wireless communication system with multiple antennas and multiple bands
    • 用于giga-bps高吞吐量无线通信系统的发射机和接收机,具有多个天线和多个频带
    • US08396102B2
    • 2013-03-12
    • US12808179
    • 2008-11-28
    • Minho CheongYu-Ro LeeJong-Ee OhSok-Kyu Lee
    • Minho CheongYu-Ro LeeJong-Ee OhSok-Kyu Lee
    • H04B1/38
    • H04B1/40
    • 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.
    • 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。
    • 7. 发明申请
    • APPARATUS AND METHOD FOR RECEPTION IN MULTI-INPUT MULTI-OUTPUT SYSTEM
    • 在多输入多输出系统中接收的装置和方法
    • US20100150281A1
    • 2010-06-17
    • US12633919
    • 2009-12-09
    • Yu-Ro LEEMinho CheongJong-Eo OhJeevon ChoiSok-Kyu Lee
    • Yu-Ro LEEMinho CheongJong-Eo OhJeevon ChoiSok-Kyu Lee
    • H04L27/06
    • H04L25/067H04L25/03006H04L2025/03426
    • Provided are an apparatus and method for reception in a MIMO system. An apparatus for calculating a signal weight, includes: at least two multiplexers configured to receive, a data stream corresponding to a weight inputted and multiplex the received data stream prior to output; a multiplexing control unit configured to control the outputs of the respective multiplexers and provide a clock of a predetermined rate and a clock of a double rate two times higher than the predetermined rate; a first multiplier configured to receive multiplexed data outputted from the respective multiplexers and multiply the multiplexed data; a first storage unit configured to latch the multiplication result of the first multiplier by the double-rate clock prior to output; an adder configured to add the output of the first storage unit and the output of the first multiplier; and a second storage unit configured to latch the addition.
    • 提供了一种用于MIMO系统中的接收的装置和方法。 一种用于计算信号权重的装置,包括:至少两个多路复用器,被配置为在输出之前接收与所输入的权重相对应的数据流并对所接收的数据流进行多路复用; 复用控制单元,被配置为控制各个多路复用器的输出,并提供预定速率的时钟和比预定速率高两倍的双倍速率的时钟; 第一乘法器,被配置为接收从各个多路复用器输出的多路复用数据并乘以多路复用数据; 第一存储单元,被配置为在输出之前将所述第一乘法器的乘法结果锁存为双速率时钟; 加法器,被配置为将第一存储单元的输出和第一乘法器的输出相加; 以及第二存储单元,被配置为锁存所述相加。
    • 8. 发明申请
    • APPARATUS AND METHOD FOR UPDATING CHECK NODE OF LOW-DENSITY PARITY CHECK CODES
    • 检查低密度奇偶校验码代码的装置和方法
    • US20100037119A1
    • 2010-02-11
    • US12517455
    • 2007-12-05
    • Jong-Ee OhYu-Ro LeeChanho YoonMinho CheongSok-Kyu LeeYoo-Seung SongYounggyun Kim
    • Jong-Ee OhYu-Ro LeeChanho YoonMinho CheongSok-Kyu LeeYoo-Seung SongYounggyun Kim
    • H03M13/05G06F11/10
    • H03M13/1122H03M13/1117H03M13/112H03M13/6527H03M13/6544H03M13/6577H03M13/658H03M13/6583
    • 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.
    • 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。