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：US08923261B2

公开(公告)日：2014-12-30

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 ,  H04L1/00 ,  H04W48/08 ,  H04L5/00 ,  H04W28/22 ,  H04W28/06 ,  H04W28/04

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：US08068560B2

公开(公告)日：2011-11-29

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： H04L27/14 ,  H04L1/02

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：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。

公开(公告)号：US20070133446A1

公开(公告)日：2007-06-14

申请号：US11636448

申请日：2006-12-11

申请人： Chan-Ho Yoon ,  Hee-Jung Yu ,  Eun-Young Choi ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Kwhang-Hyun Ryu ,  Kyoung-Ju Noh ,  Yun-Joo Kim ,  Kyoung-Hee Song ,  Sok-Kyu Lee ,  Seung-chan Bang ,  Seung-Ku Hwang

发明人： Chan-Ho Yoon ,  Hee-Jung Yu ,  Eun-Young Choi ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Kwhang-Hyun Ryu ,  Kyoung-Ju Noh ,  Yun-Joo Kim ,  Kyoung-Hee Song ,  Sok-Kyu Lee ,  Seung-chan Bang ,  Seung-Ku Hwang

IPC分类号： H04B7/00

CPC分类号： H04L1/0026 ,  H04L1/0003 ,  H04L1/0059 ,  H04L1/0075 ,  H04L1/08 ,  H04L1/188

摘要： The present invention relates to a transmitting apparatus of a wireless communication system, and a method thereof. The transmitting apparatus monitors receiving of response data for data that has been transmitted to a receiving end, and sets a first parameter for counting successful receipts according to receiving on the response data. The transmitting apparatus demodulates the response data and extracts the number of demodulated data that satisfies a first set value. Subsequently, it is determined whether the first parameter satisfies a second set value and the number of demodulated data satisfies a predetermined ratio of a referential amount of packets. According to the present invention, an efficient transmission mode for a channel state can be provided with reference to an extracted number of soft-decision data from response data received at a receiving end. In addition, a transmission mode can be determined by using only response data according to the present invention.

摘要翻译： 无线通信系统的发送装置技术领域本发明涉及无线通信系统的发送装置及其方法。 发送装置监视已经发送到接收端的数据的响应数据的接收，并且根据对响应数据的接收，设置用于计数成功收据的第一参数。 发送装置解调响应数据，并提取满足第一设定值的解调数据的数量。 随后，确定第一参数是否满足第二设定值，并且解调数据的数量满足分组的参考量的预定比率。 根据本发明，可以参照从接收端接收到的响应数据提取的软判决数据数来提供用于信道状态的有效传输模式。 此外，可以通过仅使用根据本发明的响应数据来确定传输模式。

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。

公开(公告)号：US08817920B2

公开(公告)日：2014-08-26

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，并使用所提取的相关结果检测高吞吐量（HT）信号。

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。

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。

公开(公告)号：US20110149856A1

公开(公告)日：2011-06-23

申请号：US12970157

申请日：2010-12-16

申请人： Jung-Bo Son ,  Sok-Kyu Lee ,  Hyun-Kyu Chung

发明人： Jung-Bo Son ,  Sok-Kyu Lee ,  Hyun-Kyu Chung

IPC分类号： H04W40/00

CPC分类号： H04W74/008 ,  H04B7/0408 ,  H04W72/046 ,  H04W74/0833

摘要： A data receiving apparatus includes a receiving unit configured to receive a beacon packet from at least one base station, a searching unit configured to search an index of a subchannel including an optimal channel state among subchannels allocated to a sector divided through spatial multiplexing based on the base station using the beacon packet, a calculating unit configured to calculate a final back off time by adding a slot time of the subchannel index and a random time, and a transmitting unit configured to include the searched subchannel index in a beacon response packet and transmit the beacon response packet after the calculated final back off time.

摘要翻译： 一种数据接收装置，包括：接收单元，被配置为从至少一个基站接收信标分组;搜索单元，被配置为基于所述接收单元搜索分配给通过空间复用划分的扇区的子信道中包括最佳信道状态的子信道的索引 基站，使用所述信标分组的计算单元，被配置为通过添加所述子信道索引的时隙时间和随机时间来计算最终退避时间，以及发送单元，被配置为将搜索到的子信道索引包括在信标响应分组中并发送 信标响应包后计算出最终退出时间。