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    • 1. 发明授权
    • Obstruction-determining apparatus for preventing mobile robot from becoming obstructed and boundary-estimation method and medium using the obstruction-determining apparatus
    • 用于防止移动机器人被阻挡的障碍物确定装置和使用障碍物确定装置的边界估计方法和介质
    • US08521329B2
    • 2013-08-27
    • US11898060
    • 2007-09-07
    • Ji-young ParkSeok-won BangEun-Young Choi
    • Ji-young ParkSeok-won BangEun-Young Choi
    • G05B19/418G06F19/00
    • G05D1/0227A47L11/4061A47L11/4072A47L2201/04
    • An obstruction-determining apparatus for preventing a mobile robot from being obstructed in a niche and a boundary-estimation method and medium using the obstruction-determining apparatus are disclosed. More particularly, an obstruction-determining apparatus which can determine whether a mobile robot is obstructed in a niche, and enable a mobile robot to easily escape from an obstacle if the mobile robot is determined to be obstructed in the niche, and a boundary-estimation method and medium for estimating the boundaries of an obstacle with a niche using the obstruction-determining apparatus. The obstruction-determining apparatus includes a contact module which collides with an obstacle above the mobile robot, a contact-operating module which rotates or moves linearly as a result of the collision between the contact module and the obstacle, and a sensing module which detects the rotation or the linear movement of the contact-operating module and determines whether the mobile robot is obstructed in a niche.
    • 公开了一种用于防止移动机器人在利基中被阻碍的障碍物确定装置和使用障碍物确定装置的边界估计方法和介质。 更具体地,涉及一种障碍物判定装置,其能够判断移动机器人是否受到利基的阻碍,并且如果移动机器人被确定为在利基中被阻碍,则能够使移动机器人容易地从障碍物逃脱,并且边界估计 方法和介质,用于使用障碍物确定装置估计具有利基的障碍物的边界。 障碍物确定装置包括与移动机器人上方的障碍物相撞的接触模块,由于接触模块与障碍物之间的碰撞而线性旋转或移动的接触操作模块,以及检测模块 旋转或接触操作模块的线性移动,并确定移动机器人是否在利基中被阻挡。
    • 2. 发明申请
    • Obstruction-determining apparatus for preventing mobile robot from becoming obstructed and boundary-estimation method and medium using the obstruction-determining apparatus
    • 用于防止移动机器人被阻挡的障碍物确定装置和使用障碍物确定装置的边界估计方法和介质
    • US20080084284A1
    • 2008-04-10
    • US11898060
    • 2007-09-07
    • Ji-young ParkSeok-won BangEun-Young Choi
    • Ji-young ParkSeok-won BangEun-Young Choi
    • G05B15/00B60Q1/00G05B19/00
    • G05D1/0227A47L11/4061A47L11/4072A47L2201/04
    • An obstruction-determining apparatus for preventing a mobile robot from being obstructed in a niche and a boundary-estimation method and medium using the obstruction-determining apparatus are disclosed. More particularly, an obstruction-determining apparatus which can determine whether a mobile robot is obstructed in a niche, and enable a mobile robot to easily escape from an obstacle if the mobile robot is determined to be obstructed in the niche, and a boundary-estimation method and medium for estimating the boundaries of an obstacle with a niche using the obstruction-determining apparatus. The obstruction-determining apparatus includes a contact module which collides with an obstacle above the mobile robot, a contact-operating module which rotates or moves linearly as a result of the collision between the contact module and the obstacle, and a sensing module which detects the rotation or the linear movement of the contact-operating module and determines whether the mobile robot is obstructed in a niche.
    • 公开了一种用于防止移动机器人在利基中被阻碍的障碍物确定装置和使用障碍物确定装置的边界估计方法和介质。 更具体地,涉及一种障碍物判定装置,其能够判断移动机器人是否受到利基的阻碍,并且如果移动机器人被确定为在利基中被阻碍,则能够使移动机器人容易地从障碍物逃脱,并且边界估计 方法和介质,用于使用障碍物确定装置估计具有利基的障碍物的边界。 障碍物确定装置包括与移动机器人上方的障碍物相撞的接触模块,由于接触模块与障碍物之间的碰撞而线性旋转或移动的接触操作模块,以及检测模块 旋转或接触操作模块的线性移动,并确定移动机器人是否在利基中被阻挡。
    • 3. 发明授权
    • Apparatus and method for detecting signal in wireless communication system
    • 无线通信系统信号检测装置及方法
    • US08817920B2
    • 2014-08-26
    • US12965282
    • 2010-12-10
    • Jung-Bo SonEun-Young ChoiSok-Kyu Lee
    • Jung-Bo SonEun-Young ChoiSok-Kyu Lee
    • H04L27/06
    • H04L27/3863H04L5/0023H04L5/005H04L27/2647
    • 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.
    • 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,并使用所提取的相关结果检测高吞吐量(HT)信号。
    • 5. 发明授权
    • Decoding device and method for MIMO system
    • MIMO系统的解码设备和方法
    • US08265204B2
    • 2012-09-11
    • US12602353
    • 2008-05-19
    • Eun-Young ChoiChan Ho YoonJung Bo SonHun Sik KangSok-Kyu LeeSeok Hyun Yoon
    • Eun-Young ChoiChan Ho YoonJung Bo SonHun Sik KangSok-Kyu LeeSeok Hyun Yoon
    • H04L27/06
    • H04L1/0631H04L1/006
    • The present invention relates to a decoding device and method for a MIMO system. A linear process is applied to a received signal vector by using a channel matrix estimated from the received signal vector and a poly-diagonalized matrix, and a soft decision value is acquired through a trellis decode by using the linear process result. Since the linear preprocess is performed by using the poly-diagonalized matrix, it is possible to receive a MIMO signal having good packet error rate performance and less complexity. Also, since the tail-biting trellis decoding method is used based on the poly-diagonalized matrix that is generated by poly-diagonalizing the effective channel matrix during the process for eliminating the signal interference, the soft decision value for the symbol can be generated with a simple hardwired device and less operation complexity.
    • 本发明涉及MIMO系统的解码装置和方法。 通过使用从接收信号向量和多对角化矩阵估计的信道矩阵将线性处理应用于接收信号向量,并且通过使用线性处理结果通过网格解码获取软判决值。 由于通过使用多对角化矩阵来执行线性预处理,所以可以接收具有良好的分组错误率性能和较低复杂度的MIMO信号。 另外,由于基于在消除信号干扰的处理期间通过对有效信道矩阵进行多对角化而产生的多对角化矩阵使用尾巴格状解码方法,所以可以生成符号的软判决值, 简单的硬连线设备,操作复杂度较低。
    • 6. 发明授权
    • Apparatus and method for decoding LDPC code based on prototype parity check matrixes
    • 基于原型奇偶校验矩阵对LDPC码进行解码的装置和方法
    • US08214717B2
    • 2012-07-03
    • US12166866
    • 2008-07-02
    • Jong-Ee OhChanho YoonCheol-Hui RyuEun-Young ChoiSok-Kyu Lee
    • Jong-Ee OhChanho YoonCheol-Hui RyuEun-Young ChoiSok-Kyu Lee
    • H03M13/00
    • H03M13/116H03M13/1137H03M13/1185H03M13/1188H03M13/6516
    • Provided is an apparatus and method for decoding a Low Density Parity Check (LDPC) code based on prototype parity check matrixes. The apparatus, includes: a parity check matrix selecting means for determining multiple prototype parity check matrixes according to a sub-matrix size and a parallelization figure for processing the parity check matrix; a bit input means for receiving a log likelihood probability value for input bit according to the sub-matrix size and the parallelization figure; a check matrix process means for sequentially performing a partial parallel process on the parity check matrix based on the received log likelihood probability value and the determined multiple prototype parity check matrixes; and a bit process means for determining a bit level based on the partial-parallel processed parity check matrix value and recovering the input bit according to the sub-matrix size and the parallelization figure.
    • 提供了一种基于原型奇偶校验矩阵对低密度奇偶校验(LDPC)码进行解码的装置和方法。 该装置包括:奇偶校验矩阵选择装置,用于根据子矩阵大小确定多个原型奇偶校验矩阵;以及用于处理奇偶校验矩阵的并行化图; 用于根据子矩阵大小和并行化图形接收输入比特的对数似然概率值的位输入装置; 校验矩阵处理装置,用于基于所接收的对数似然概率值和所确定的多原型奇偶校验矩阵,顺序对奇偶校验矩阵执行部分并行处理; 以及位处理装置,用于基于部分并行处理的奇偶校验矩阵值确定位电平,并根据子矩阵大小和并行化图形恢复输入位。
    • 7. 发明授权
    • Receiving apparatus and method for MIMO system
    • MIMO系统的接收装置和方法
    • US08107563B2
    • 2012-01-31
    • US12177655
    • 2008-07-22
    • Chanho YoonIl-Gu LeeJung-Bo SonEun-Young ChoiYu-Ro LeeSok-Kyu Lee
    • Chanho YoonIl-Gu LeeJung-Bo SonEun-Young ChoiYu-Ro LeeSok-Kyu Lee
    • H04L27/14
    • H04B7/0851H04B7/0669H04L1/0048H04L1/0631H04L25/067H04L27/2601
    • 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.
    • 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。
    • 8. 发明申请
    • APPARATUS AND METHOD FOR DETECTING PACKET END POINT IN WIRELESS COMMUNICATION SYSTEM
    • 在无线通信系统中检测分组端点的装置和方法
    • US20110150149A1
    • 2011-06-23
    • US12965333
    • 2010-12-10
    • Il-Gu LeeEun-Young ChoiJung-Bo SonHun-Sik KangSok-Kyu Lee
    • Il-Gu LeeEun-Young ChoiJung-Bo SonHun-Sik KangSok-Kyu Lee
    • H04L27/00
    • H04L27/2656H04L5/0023H04L27/2657H04L27/2675H04L27/2678H04L27/2688
    • An apparatus for detecting a packet end point in a wireless communication system includes: a signal reception unit configured to receive a signal from an outside, convert the signal into a baseband signal, perform analog-digital conversion of the baseband signal, and perform a digital front end; a storage unit configured to store an output of the signal reception unit; a frequency offset estimation unit configured to estimate a frequency offset using the output of the storage unit; a frequency offset correction unit configured to compensate for a frequency error using the estimated frequency offset; an offset correlation unit configured to calculate correlation of the frequency offset and a cyclic prefix; an auto-correlation operation unit configured to calculate auto-correlation of the cyclic prefix; and a packet end detection unit configured to check a packet end point using the auto-correlation.
    • 一种用于在无线通信系统中检测分组终点的装置包括:信号接收单元,被配置为从外部接收信号,将该信号转换为基带信号,执行基带信号的模数转换,并执行数字 前端; 存储单元,被配置为存储所述信号接收单元的输出; 频率偏移估计单元,被配置为使用所述存储单元的输出来估计频率偏移; 频率偏移校正单元,被配置为使用所估计的频率偏移来补偿频率误差; 偏移相关单元,被配置为计算所述频率偏移和循环前缀的相关性; 自相关操作单元,被配置为计算所述循环前缀的自相关; 以及分组结束检测单元,被配置为使用所述自相关来检查分组结束点。