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51. 发明申请

US20100103900A1 BEAMFORMING METHOD AND DEVICE 审中-公开
标题翻译：波纹形成方法和装置
公开(公告)号：US20100103900A1
公开(公告)日：2010-04-29
申请号：US12518233
申请日：2007-09-19
申请人： Choong-Il Yeh , Dong-Seung Kwon , Jee-Hwan Ahn
发明人： Choong-Il Yeh , Dong-Seung Kwon , Jee-Hwan Ahn
IPC分类号： H04W4/00
CPC分类号： H04B7/086 , H04B7/0695 , H04W74/00 , H04W88/08
摘要： The present invention relates to a beamforming device in an orthogonal frequency division multiplexing access system, and a method thereof. In the method, a switched beamforming algorithm is applied to perform downlink beamforming, and an adaptive beamforming algorithm is applied to perform uplink receiving beamforming. In addition, a half wavelength array antenna is used to simultaneously allocate the same resource to two terminals separately positioned in two different spaces, so as to support spatial division multiple access (SDMA). In this case, since a base station uses channel status information at transmitter (CSIT) for transmitting beamforming and receiving beamforming, the SDMA may be supported without obtaining additional channel status information at receiver (CSIR) when realizing the uplink receiving beamforming.
摘要翻译：本发明涉及正交频分复用接入系统中的波束成形装置及其方法。在该方法中，应用交换波束成形算法来执行下行波束成形，并且应用自适应波束成形算法来执行上行链路接收波束形成。另外，使用半波长阵列天线来将相同的资源同时分配给分开定位在两个不同空间中的两个终端，以支持空分多址（SDMA）。在这种情况下，由于基站在发射机（CSIT）处使用信道状态信息来发送波束成形和接收波束形成，所以在实现上行链路接收波束形成时，可以不在接收机（CSIR）下获得附加信道状态信息的情况下支持SDMA。

52. 发明申请

US20090067513A1 Smart antenna system and method thereof for forming uplink eigenbeam of ofdm/tdd 有权
标题翻译：智能天线系统及其形成为dm / tdd的上行本征光束的方法
公开(公告)号：US20090067513A1
公开(公告)日：2009-03-12
申请号：US11579722
申请日：2004-11-10
申请人： Seong-Rag Kim , In-Kyeong Choi , Dong-Seung Kwon , Seung-Ku Hwang
发明人： Seong-Rag Kim , In-Kyeong Choi , Dong-Seung Kwon , Seung-Ku Hwang
IPC分类号： H04L27/28 , H04J11/00
CPC分类号： H04B7/0413 , H04B7/0617 , H04B7/0619 , H04B7/086 , H04L5/023 , H04L5/1484 , H04L25/0228 , H04L25/0248 , H04L27/2647
摘要： A mobile station transmitting and receiving method and a corresponding mobile station transmitter and receiver of a smart antenna system for forming uplink eigenbeams of the OFDM/TDD (orthogonal frequency division multiplex/time division duplex), wherein OFDM symbols are received from a base station through a downlink via multiple antennas (250) and an FFT (fast Fourier transform) is performed on the received OFDM symbols by the FFT units (270). By means of a channel estimator (290) the channels are estimated and a beam weight generator (310) generates respective beam weights from the channels of the respective pilot tones of the respective subcarriers according to the channel estimation result. A beam weight multiplier (230) forms the uplink beam by multiplying the respective beam weights with the output of the signal repeater (220) and IFFT units (240) generate respective OFDM symbols which are transmitted via multiple antennas (250) through an uplink.
摘要翻译：一种用于形成OFDM / TDD（正交频分复用/时分双工）的上行固有光束的智能天线系统的移动台发射和接收方法和相应的移动台发射机和接收机，其中从基站通过通过FFT单元（270）对所接收的OFDM符号执行经由多个天线（250）和FFT（快速傅里叶变换）的下行链路。通过信道估计器（290），估计信道，并且波束权重发生器（310）根据信道估计结果从相应子载波的相应导频音调的信道生成相应的波束权重。波束权重乘法器（230）通过将各个波束权重与信号中继器（220）的输出相乘来形成上行链路波束，并且IFFT单元（240）生成经由多个天线（250）经由上行链路发送的各个OFDM符号。

53. 发明申请

US20080313252A1 Sphere Decoder and Decoding Method Thereof 有权
标题翻译：球体解码器及其解码方法
公开(公告)号：US20080313252A1
公开(公告)日：2008-12-18
申请号：US11722131
申请日：2005-12-21
申请人： Seong-Rag Kim , Seung-Joon Lee , Dong-Seung Kwon , Seong-Keun Oh , Hee-Goo Han
发明人： Seong-Rag Kim , Seung-Joon Lee , Dong-Seung Kwon , Seong-Keun Oh , Hee-Goo Han
IPC分类号： G06F17/16 , G06F17/30
CPC分类号： H04L25/03242 , H04L1/0045 , H04L1/06
摘要： A sphere decoder sets a Euclidean distance between a lattice vector obtained by using an MMSE or ZF estimate and a received signal as an initial radius, further reduces the initial radius, and searches lattices points included inside a hypersphere with the further reduced initial radius. In addition, one lattice vector having a minimum Euclidean distance is output. One dimension is selected to reduce an initial radius, and estimates in other dimensions are kept fixed, excluding the selected dimension. Then candidate lattice points are searched in the selected dimension, excluding a current estimate, such that a minimum Euclidean distance and a lattice point estimate corresponding to the minimum Euclidean distance are obtained. The initial radius is updated by the minimum Euclidean distance, and a final lattice vector is constructed by combining a lattice point estimate corresponding to the initial radius and the lattice point estimates in other dimensions.
摘要翻译：球体解码器设置通过使用MMSE或ZF估计获得的格子向量与作为初始半径的接收信号之间的欧氏距离，进一步减小初始半径，并且搜索包含在超球体内的具有进一步减小的初始半径的晶格点。此外，输出具有最小欧几里德距离的一个格子矢量。选择一个维度以减少初始半径，并且将其他维度的估计值保持固定，不包括所选维度。然后，在所选择的维度中搜索候选格点，排除当前估计，使得获得对应于最小欧几里德距离的最小欧几里德距离和格点估计。初始半径通过最小欧几里得距离来更新，并且通过组合对应于初始半径的网格点估计和其他维度中的格点估计来构造最终的格子矢量。

54. 发明申请

US20080291820A1 Method for Allocating Frequency Domain Spread Code in Base Station of Mc-Cdma Communication System 有权
标题翻译： Mc-Cdma通信系统基站频域扩频码分配方法
公开(公告)号：US20080291820A1
公开(公告)日：2008-11-27
申请号：US12096874
申请日：2006-07-25
申请人： Hyung-Soo Lim , Yu-Ro Lee , Dong-Seung Kwon
发明人： Hyung-Soo Lim , Yu-Ro Lee , Dong-Seung Kwon
IPC分类号： H04J14/00 , H04J13/04
CPC分类号： H04L5/0021 , H04J13/0048 , H04J13/18 , H04L5/0007 , H04L5/0039 , H04L5/0064 , H04L5/0073
摘要： The present invention relates to a method for allocating a frequency domain spread code in a base station of a multi-carrier code division multiple access (MC-CDMA) communication system. A code allocation priority is established based on interference between previously allocated spread codes and a newly allocated spread code so as to minimize the interference caused by channel fading or a synchronization error according to a transmitting or receiving timing offset when a scheduler of the base station in the MC-CDMA communication system allocates a subcarrier group to the plurality of user terminals or channels, and the spread code is allocated to the plurality of user terminals or channels according to the established priority, by the scheduler of the base station.
摘要翻译：本发明涉及一种在多载波码分多址（MC-CDMA）通信系统的基站中分配频域扩频码的方法。基于先前分配的扩展码和新分配的扩展码之间的干扰建立码分配优先级，以便当基站的调度器处于发送或接收定时偏移时，根据发送或接收定时偏移最小化由信道衰落或同步误差引起的干扰 MC-CDMA通信系统向多个用户终端或信道分配子载波组，并且由基站的调度器根据建立的优先级将扩频码分配给多个用户终端或信道。

55. 发明申请

US20080285677A1 Apparatus and Method For Transmitting Signals With Multiple Antennas 有权
标题翻译：用于发射具有多个天线的信号的装置和方法
公开(公告)号：US20080285677A1
公开(公告)日：2008-11-20
申请号：US12091664
申请日：2006-10-27
申请人： Seung-Joon Lee , Jong-Ee Oh , Yu-Ro Lee , Dong-Seung Kwon
发明人： Seung-Joon Lee , Jong-Ee Oh , Yu-Ro Lee , Dong-Seung Kwon
IPC分类号： H04L27/00
CPC分类号： H01L23/3128 , H01L25/105 , H01L2225/1023 , H01L2225/1058 , H01L2924/0002 , H01L2924/3511 , H01L2924/00
摘要： An apparatus for transmitting signals with multiple antennas is disclosed. The multiple antenna transmission apparatus performs space-time encoding or space-frequency encoding, and cyclically delays the encoded symbol with a plurality of delay-values to generate a plurality of delayed symbols. The multiple antenna transmission apparatus transmits the plurality of delayed symbols to the channel through a plurality of antennas. By changing the number of space areas for encoding and the number of delay-values for delaying, the number of antennas for the multiple antenna transmission apparatus is easily expanded.
摘要翻译：公开了一种用多个天线发射信号的装置。多天线发送装置执行空时编码或空间频率编码，并且以多个延迟值循环地延迟编码符号，以生成多个延迟符号。多天线发送装置通过多个天线将多个延迟符号发送到信道。通过改变用于编码的空间区域的数量和用于延迟的延迟值的数量，多天线发送装置的天线数量容易扩大。

56. 发明申请

US20080267111A1 Data Transmitting Method in Wireless Communication System 审中-公开
标题翻译：无线通信系统中的数据传输方法
公开(公告)号：US20080267111A1
公开(公告)日：2008-10-30
申请号：US12094549
申请日：2006-11-24
申请人： Hyoung-Soo Lim , Dong-Seung Kwon , Chung-Gu Kang , Hyun-Seok Ryu
发明人： Hyoung-Soo Lim , Dong-Seung Kwon , Chung-Gu Kang , Hyun-Seok Ryu
IPC分类号： H04B7/14
CPC分类号： H04B7/0671 , H04B7/15592
摘要： In a method for transmitting data from a first node to a second node through first and second relay units in a wireless communication system: a) a first symbol is transmitted from the first node to the second node and the first relay unit during a first time slot section; b) the first symbol, which is received from the first node, is transmitted from the first relay unit to the second node during a second time slot section; c) a second symbol is transmitted from the first node to the second node and the second relay unit during the second time slot section; and d) the second symbol, which is received from the first node, is transmitted from the second relay unit to the second node during a third time slot section.
摘要翻译：一种用于在无线通信系统中通过第一和第二中继单元从第一节点传送数据到第二节点的方法：a）第一符号在第一时间从第一节点发射到第二节点和第一中继单元槽部分 b）在第二时隙部分期间从第一节点接收的第一符号从第一中继单元发送到第二节点; c）在第二时隙部分期间从第一节点向第二节点和第二中继单元发送第二符号; 以及d）在第三时隙部分期间从第一中继单元向第二节点发送从第一节点接收的第二符号。

57. 发明申请

US20080240276A1 Multi-Input Multi-Output System For Enhancing Transmission Performance 失效
标题翻译：用于提高传输性能的多输入多输出系统
公开(公告)号：US20080240276A1
公开(公告)日：2008-10-02
申请号：US11667711
申请日：2005-08-10
申请人： Young-Seog Song , Seong-Rag Kim , In-Kyeong Choi , Choong-ll Yeh , Seung-Joon Lee , Hyoung-Soo Lim , Kwang-Jae Lim , Yu-Ro Lee , Jong-Ee Oh , Dong-Seung Kwon , Seung-Ku Hwang , Chung-Yong Lee , Myeong-Cheol Shin
发明人： Young-Seog Song , Seong-Rag Kim , In-Kyeong Choi , Choong-ll Yeh , Seung-Joon Lee , Hyoung-Soo Lim , Kwang-Jae Lim , Yu-Ro Lee , Jong-Ee Oh , Dong-Seung Kwon , Seung-Ku Hwang , Chung-Yong Lee , Myeong-Cheol Shin
IPC分类号： H04L5/12 , H04L27/28
CPC分类号： H04B7/061 , H04B7/0669 , H04B7/0691 , H04B7/08 , H04L1/0003 , H04L1/0637 , H04L1/0675
摘要： The present invention relates to a multi-input multi-output (MIMO) system for enhancing transmission performance. The MIMO system uses space-time encoding and transmit antenna selection methods, and includes a transmitter (100) and a receiver (200). The transmitter (100) includes N transmit antennas (130-1, 130-4) that are more than M tansrni antennas (130-1, 130-3) used for transmitting a signal to space channel, selects the M transmit antennas (130-1, 130-3) among the N transmit antennas (130-3 130-4), and transmits symbol by space-time encoding the symbol. The receiver (200) includes M receive antenna (120-1, 210-2) for receiving a signal from the space channel, detects an information symbol by using the signal received through the receive antenna (210-1, 210-2), generates transmit antenna selection information for selecting M transmit antennas (130-1, 130-3) among transmit antennas (i30-1, . . . 7130-4) with reference to a channel estimate, and returns the information to the transmitter.
摘要翻译：本发明涉及用于增强传输性能的多输入多输出（MIMO）系统。 MIMO系统使用时空编码和发射天线选择方法，并且包括发射机（100）和接收机（200）。发射机（100）包括比用于将信号发射到空间信道的M多个天线（130-1,30-3）多的N个发射天线（130-1,140-4），选择M个发射天线（130 -1,130-3），并且通过对该符号进行时空编码来发送符号。接收器（200）包括用于从空间信道接收信号的M个接收天线（120-1,210-2），通过使用通过接收天线（210-1,210-2）接收的信号来检测信息符号，生成用于参考信道估计在发射天线（i 30-1，...，7130-4）中选择M个发射天线（130-1,130-3）的发射天线选择信息，并将该信息返回给发射机。

58. 发明申请

US20080081669A1 METHOD AND DEVICE FOR OPTIMIZING CODEBOOK FOR QUANTIZED PRECODER BY USING STEEPEST DESCENT ALGORITHM 有权
标题翻译：通过使用STEEPEST DESCAL算法优化定量预处理器的代码的方法和设备
公开(公告)号：US20080081669A1
公开(公告)日：2008-04-03
申请号：US11743147
申请日：2007-05-02
申请人： Dong-Seung Kwon , Young-Seog Song , In-Kyeong Choi , Chungyong Lee , Myeongcheol Shin , Myoung-Seok Kim , Seung-Joon Lee
发明人： Dong-Seung Kwon , Young-Seog Song , In-Kyeong Choi , Chungyong Lee , Myeongcheol Shin , Myoung-Seok Kim , Seung-Joon Lee
IPC分类号： H04B1/38
CPC分类号： H04B7/0658 , H04B7/0634 , H04B7/0639
摘要： In a method for optimizing a codebook including a quantized channel between a base station transmitter and a portable terminal: a) select the codebook to be optimized; b) a steepest descent algorithm is applied to respective codewords of the codebook selected in a), wherein the codewords are transformed so that a correlation between the codewords is minimized, and a function indicating the correlation between the codewords is differentiated and is multiplied by a predetermined step size and is used for a parameter for generating a new codeword in the steepest descent algorithm; c) it is determined whether the codebook including the codewords transformed in b) is optimized; and d) the codebook is stored when it is determined in c) that the codebook is optimized.
摘要翻译：一种用于优化包括基站发射机和便携式终端之间的量化信道的码本的方法：a）选择要优化的码本; b）将最陡下降算法应用于在a）中选择的码本的相应码字，其中对码字进行变换，使得码字之间的相关性最小化，并且指示码字之间的相关性的函数被区分，并乘以用于在最速下降算法中生成新码字的参数; c）确定包括在b）中变换的码字的码本是否被优化; 以及d）当在c）中确定码本被优化时，存储码本。

59. 发明申请

US20070263743A1 Method for Allocating Data and Pilots, and Transmitting Method and Device and Receiving Method and Device Using the Same in Orthogonal Frequency Division Multiple Access System 有权
标题翻译：分配数据和导频的方法，以及正交频分多址系统的发送方法及装置及其接收方法及装置
公开(公告)号：US20070263743A1
公开(公告)日：2007-11-15
申请号：US10583593
申请日：2004-07-22
申请人： Yu-Ro Lee , Jonge-Ee Oh , Choong-Il Yeh , Hyoung-Soo Lim , Dong-Seung Kwon
发明人： Yu-Ro Lee , Jonge-Ee Oh , Choong-Il Yeh , Hyoung-Soo Lim , Dong-Seung Kwon
IPC分类号： H04B7/02
CPC分类号： H04B7/12 , H04L5/0044 , H04L5/0048 , H04W72/00
摘要： Disclosed is a method for allocating data and pilots, a transmitting method and device, a receiving method and device in an OFDMA system. A terminal partitions subcarrier groups and symbols from an uplink channel based on a basic pilot pattern generated by a specific reference, receives at least one subchannel based on the partitioned subcarrier groups and symbols, hops the subcarrier groups caused by the subchannel according to hopping patterns, allocates data, and differently positions the pilots per subcarrier group based on the basic pilot pattern. Accordingly, the probability of pilot collision between adjacent cells is reduced, and accuracy of channel estimation is increased through boosting the pilot subcarrier power.
摘要翻译：公开了一种在OFDMA系统中分配数据和导频的方法，发送方法和设备，接收方法和设备。终端基于由特定基准产生的基本导频模式，从上行链路信道分割子载波组和符号，根据划分的子载波组和符号接收至少一个子信道，根据跳频图案跳过由子信道引起的子载波组，分配数据，并且基于基本导频模式不同地定位每个子载波组的导频。因此，相邻小区之间的导频冲突的概率降低，并且通过提升导频副载波功率来增加信道估计的精度。

60. 发明申请

US20070140104A1 System and method for timing acquisition and carrier frequency offset estimation in wireless communication based on OFDM 有权
标题翻译：基于OFDM的无线通信定时采集和载波频率偏移估计的系统和方法
公开(公告)号：US20070140104A1
公开(公告)日：2007-06-21
申请号：US11521171
申请日：2006-09-14
申请人： Hyoung-Soo Lim , Dong-Seung Kwon
发明人： Hyoung-Soo Lim , Dong-Seung Kwon
IPC分类号： H04J11/00 , H04J3/06
CPC分类号： H04L27/2657 , H04L27/0014 , H04L27/2656 , H04L27/2662 , H04L27/2679 , H04L2027/0046 , H04L2027/0067
摘要： The present invention relates to a method for timing acquisition and carrier frequency offset estimation of an OFDM communication system and an apparatus using the same. For this purpose the present invention provides a method for calculating at least one auto-correlation and calculating an observation value by performing a sliding sum on the at least one auto-correlation, and calculating a peak point of an absolute value of the observation as frame timing. In addition, the present invention provides a method for generating a third OFDM symbol that is generated by delaying a second OFDM symbol, calculating an observation value through the second and third OFDM symbols, and calculating a phase difference from a result of multiplication of the observation value and a conjugate complex value of the observation value such that a carrier frequency offset can be estimated. According to the present invention, the number of OFDM symbols is sufficient for obtaining timing acquisition with high reliability, and the offset estimation algorithm having a lower implementation complexity is provided such that superior performance is expected and carrier frequency offset with high reliability can be achieved.
摘要翻译：本发明涉及一种用于OFDM通信系统的定时获取和载波频率偏移估计的方法及其使用方法。为此，本发明提供了一种通过对至少一个自相关执行滑移和来计算至少一个自相关并计算观测值的方法，并且将观测的绝对值的峰值计算为帧定时。另外，本发明提供一种生成通过延迟第二OFDM符号而产生的第三OFDM符号的方法，通过第二和第三OFDM符号来计算观测值，并且从观测的乘法结果中计算出相位差值和观测值的共轭复值，使得可以估计载波频率偏移。根据本发明，OFDM符号的数量足以获得具有高可靠性的定时获取，并且提供具有较低实现复杂度的偏移估计算法，从而可以期待优异的性能，并且可以实现具有高可靠性的载波频率偏移。

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