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    Apparatus and method for detecting packet end point in wireless communication system
    1.
    发明授权
    Apparatus and method for detecting packet end point in wireless communication system 有权
    无线通信系统中的分组终点检测装置及方法

    公开(公告)号：US08817921B2

    公开(公告)日：2014-08-26

    申请号：US12965333

    申请日：2010-12-10

    申请人： Il-Gu Lee ,  Eun-Young Choi ,  Jung-Bo Son ,  Hun-Sik Kang ,  Sok-Kyu Lee

    发明人： Il-Gu Lee ,  Eun-Young Choi ,  Jung-Bo Son ,  Hun-Sik Kang ,  Sok-Kyu Lee

    IPC分类号： H04L27/14 ,  H04L27/26

    CPC分类号： H04L27/2656 ,  H04L5/0023 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2678 ,  H04L27/2688

    摘要： 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.

    摘要翻译： 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。

    APPARATUS AND METHOD FOR DETECTING PACKET END POINT IN WIRELESS COMMUNICATION SYSTEM
    2.
    发明申请
    APPARATUS AND METHOD FOR DETECTING PACKET END POINT IN WIRELESS COMMUNICATION SYSTEM 有权
    在无线通信系统中检测分组端点的装置和方法

    公开(公告)号：US20110150149A1

    公开(公告)日：2011-06-23

    申请号：US12965333

    申请日：2010-12-10

    申请人： Il-Gu Lee ,  Eun-Young Choi ,  Jung-Bo Son ,  Hun-Sik Kang ,  Sok-Kyu Lee

    发明人： Il-Gu Lee ,  Eun-Young Choi ,  Jung-Bo Son ,  Hun-Sik Kang ,  Sok-Kyu Lee

    IPC分类号： H04L27/00

    CPC分类号： H04L27/2656 ,  H04L5/0023 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2678 ,  H04L27/2688

    摘要： 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.

    摘要翻译： 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。

    Decoding device and method for MIMO system
    3.
    发明授权
    Decoding device and method for MIMO system 有权
    MIMO系统的解码设备和方法

    公开(公告)号：US08265204B2

    公开(公告)日：2012-09-11

    申请号：US12602353

    申请日：2008-05-19

    申请人： Eun-Young Choi ,  Chan Ho Yoon ,  Jung Bo Son ,  Hun Sik Kang ,  Sok-Kyu Lee ,  Seok Hyun Yoon

    发明人： Eun-Young Choi ,  Chan Ho Yoon ,  Jung Bo Son ,  Hun Sik Kang ,  Sok-Kyu Lee ,  Seok Hyun Yoon

    IPC分类号： H04L27/06

    CPC分类号： H04L1/0631 ,  H04L1/006

    摘要： 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.

    摘要翻译： 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。

    DECODING DEVICE AND METHOD FOR MIMO SYSTEM
    4.
    发明申请
    DECODING DEVICE AND METHOD FOR MIMO SYSTEM 有权
    用于MIMO系统的解码设备和方法

    公开(公告)号：US20100189200A1

    公开(公告)日：2010-07-29

    申请号：US12602353

    申请日：2008-05-19

    申请人： Eun-Young Choi ,  Chan Ho Yoon ,  Jung Bo Son ,  Hun Sik Kang ,  Sok-Kyu Lee ,  Seok Hyun Yoon

    发明人： Eun-Young Choi ,  Chan Ho Yoon ,  Jung Bo Son ,  Hun Sik Kang ,  Sok-Kyu Lee ,  Seok Hyun Yoon

    IPC分类号： H04L27/06

    CPC分类号： H04L1/0631 ,  H04L1/006

    摘要： 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.

    摘要翻译： 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。

    Transmitting and receiving systems for increasing service coverage in orthogonal frequency division multiplexing wireless local area network, and method thereof
    7.
    发明申请
    Transmitting and receiving systems for increasing service coverage in orthogonal frequency division multiplexing wireless local area network, and method thereof 有权
    用于在正交频分复用无线局域网中增加服务覆盖的发射和接收系统及其方法

    公开(公告)号：US20070115802A1

    公开(公告)日：2007-05-24

    申请号：US11635927

    申请日：2006-12-08

    申请人： Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

    发明人： Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

    IPC分类号： H04J11/00

    CPC分类号： H04L5/0046 ,  H04L27/2613 ,  H04L27/2627 ,  H04L27/2649 ,  H04W28/14 ,  H04W72/04 ,  H04W84/12

    摘要： The present invention relates to an orthogonal frequency division multiplexing wireless local area network (LAN) transmitting/receiving system for providing expanded service coverage, and a method thereof. According to the present invention, first OFDM modulation is performed for an even-numbered time, and second OFDM modulation is performed by changing subcarrier allocation positions of first OFDM modulated symbols for an odd-numbered time. In addition, a transmitting frame including a plurality of signal fields according to the first and second OFDM modulation is transmitted. The receiving system determines a format configuration of the received frame to determine whether a signal field is repeatedly generated in the frame. When it is determined that the signal field is not repeatedly generated, corresponding demodulation is performed. When it is determined that the signal field is repeatedly performed, the signal field is demodulated by using first bit allocation information and is demodulated by using second bit allocation information having a 1/2 value of the first bit allocation information. A data field is demodulated according to the demodulated signal field.

    摘要翻译： 本发明涉及一种用于提供扩展业务覆盖的正交频分复用无线局域网（LAN）发送/接收系统及其方法。 根据本发明，对于偶数时间执行第一OFDM调制，并且通过改变奇数时间的第一OFDM调制符号的副载波分配位置来执行第二OFDM调制。 此外，发送包括根据第一和第二OFDM调制的多个信号字段的发送帧。 接收系统确定接收到的帧的格式配置，以确定帧中是否重复产生信号字段。 当确定信号域不被重复产生时，执行相应的解调。 当确定重复执行信号场时，通过使用第一比特分配信息解调信号场，并且通过使用具有第一比特分配信息的1/2值的第二比特分配信息进行解调。 根据解调信号字段对数据字段进行解调。

    Receiving apparatus and method for MIMO system
    8.
    发明授权
    Receiving apparatus and method for MIMO system 有权
    MIMO系统的接收装置和方法

    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。

    Automatic gain control device having variable gain control interval and method thereof
    10.
    发明申请
    Automatic gain control device having variable gain control interval and method thereof 失效
    具有可变增益控制间隔的自动增益控制装置及其方法

    公开(公告)号：US20070135071A1

    公开(公告)日：2007-06-14

    申请号：US11636201

    申请日：2006-12-08

    申请人： Il-Gu Lee ,  Sok-Kyu Lee ,  Hee-jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Deuk-Su Lyu ,  Seung-Wook Min ,  Tae-hyun Jeon ,  Seung-Chan Bang ,  Seung-Ku Hwang

    发明人： Il-Gu Lee ,  Sok-Kyu Lee ,  Hee-jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Deuk-Su Lyu ,  Seung-Wook Min ,  Tae-hyun Jeon ,  Seung-Chan Bang ,  Seung-Ku Hwang

    IPC分类号： H04B1/06 ,  H04B7/00

    CPC分类号： H04W52/52

    摘要： An exemplary automatic gain control device includes: a radio frequency receiver for receiving a plurality of first signals through a plurality of antennas, respectively controlling gains of the plurality of first received signals, and outputting the plurality of the first signals having the controlled gain as a plurality of second signals; a signal saturation detecting unit for outputting a saturation index determination value when the number of plurality of second signals that are greater than a threshold value is greater than a predetermined number; and a gain controlling unit for comparing power values of the plurality of second signals to detect one power value, and outputting a gain value determined based on a detected power value and a saturation index determination value to the radio frequency receiver.

    摘要翻译： 示例性的自动增益控制装置包括：射频接收器，用于通过多个天线接收多个第一信号，分别控制多个第一接收信号的增益，并将具有受控增益的多个第一信号作为 多个第二信号; 信号饱和检测单元，当大于阈值的多个第二信号的数量大于预定数量时，输出饱和度指标确定值; 以及增益控制单元，用于对所述多个第二信号的功率值进行比较，以检测一个功率值，并将基于检测到的功率值和饱和度指标确定值确定的增益值输出到所述射频接收器。