公开(公告)号：US08243707B2

公开(公告)日：2012-08-14

申请号：US12517753

申请日：2007-10-10

申请人： In-Kyeong Choi ,  Dong-Seung Kwon ,  Choong-Il Yeh ,  Ji-Won Kang ,  Chung-Yong Lee

发明人： In-Kyeong Choi ,  Dong-Seung Kwon ,  Choong-Il Yeh ,  Ji-Won Kang ,  Chung-Yong Lee

IPC分类号： H04B7/216

CPC分类号： H04B7/0695 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0639

摘要： The present invention relates to a method of forming a random beam, and a beam forming apparatus. A quantization preprocessor and a random unitary matrix having a predetermined pattern are used to form a beam on a mobile terminal. A base station forms a beam using a codeword index of a quantization codebook received from a mobile terminal and channel quality information corresponding to the codeword index, and the mobile terminal generates the codeword index and the channel quality information using pilot signals generated by the base station. The number of pilot signals is equal to the number of transmitting antennas. Therefore, a codebook that has been known to both the mobile terminal and the base station is used, and the mobile terminal can select the codeword index for quantization, which makes it possible to selectively give diversity and thus improve the system efficiency.

摘要翻译： 本发明涉及一种形成随机光束的方法和一种光束形成装置。 使用具有预定图案的量化预处理器和随机单位矩阵在移动终端上形成一个波束。 基站使用从移动终端接收的量化码本的码字索引和与码字索引相对应的信道质量信息来形成波束，并且移动终端使用由基站产生的导频信号来生成码字索引和信道质量信息 。 导频信号的数量等于发射天线的数量。 因此，使用了移动终端和基站都已知的码本，并且移动终端可以选择用于量化的码字索引，这使得可以选择性地给出分集并从而提高系统效率。

公开(公告)号：US20100322223A1

公开(公告)日：2010-12-23

申请号：US12517753

申请日：2007-10-10

申请人： In-Kyeong Choi ,  Dong-Seung Kwon ,  Choong-Il Yeh ,  Ji-Won Kang ,  Chung-Yong Lee

发明人： In-Kyeong Choi ,  Dong-Seung Kwon ,  Choong-Il Yeh ,  Ji-Won Kang ,  Chung-Yong Lee

IPC分类号： H04B7/216

CPC分类号： H04B7/0695 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0639

摘要： The present invention relates to a method of forming a random beam, and a beam forming apparatus. A quantization preprocessor and a random unitary matrix having a predetermined pattern are used to form a beam on a mobile terminal. A base station forms a beam using a codeword index of a quantization codebook received from a mobile terminal and channel quality information corresponding to the codeword index, and the mobile terminal generates the codeword index and the channel quality information using pilot signals generated by the base station. The number of pilot signals is equal to the number of transmitting antennas. Therefore, a codebook that has been known to both the mobile terminal and the base station is used, and the mobile terminal can select the codeword index for quantization, which makes it possible to selectively give diversity and thus improve the system efficiency.

摘要翻译： 本发明涉及一种形成随机光束的方法和一种光束形成装置。 使用具有预定图案的量化预处理器和随机单位矩阵在移动终端上形成一个波束。 基站使用从移动终端接收的量化码本的码字索引和与码字索引相对应的信道质量信息来形成波束，并且移动终端使用由基站产生的导频信号来生成码字索引和信道质量信息 。 导频信号的数量等于发射天线的数量。 因此，使用了移动终端和基站都已知的码本，并且移动终端可以选择用于量化的码字索引，这使得可以选择性地给出分集并从而提高系统效率。

公开(公告)号：US20070155336A1

公开(公告)日：2007-07-05

申请号：US11601049

申请日：2006-11-17

申请人： Seung-Hoon Nam ,  Myeon-Kyun Cho ,  Yung-Soo Kim ,  Sei-Joon Shim ,  Kyeong-Yeon Kim ,  Chung-Yong Lee

发明人： Seung-Hoon Nam ,  Myeon-Kyun Cho ,  Yung-Soo Kim ,  Sei-Joon Shim ,  Kyeong-Yeon Kim ,  Chung-Yong Lee

IPC分类号： H04B7/00 ,  H04M1/00

CPC分类号： H04B7/0408 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0639

摘要： Provided are an apparatus and method for eliminating multi-user interference in a codebook-based beamforming system. A transmitter for providing a service to multi-users in the codebook-based beamforming system includes a beamformer for generating beamformed user signals by multiplying transmit data of users, to whom the service is to be provided, by corresponding weighting factor vectors using feedback information; a null space generator for generating a null space matrix orthogonal to weighting factor vectors of other users; and a projector for projecting the beamformed user signals on the corresponding null space matrix and transmitting the resulting signals through a plurality of antennas. Because the multi-user signals can maintain orthogonality, the performance degradation caused by the multi-user interference can be prevented.

摘要翻译： 提供了一种用于消除基于码本的波束成形系统中的多用户干扰的装置和方法。 用于在基于码本的波束成形系统中为多用户提供服务的发射机包括波束形成器，用于通过使用反馈信息将相应的加权因子向量乘以要提供服务的用户的发送数据来生成波束形成的用户信号; 零空间生成器，用于生成与其他用户的加权因子矢量正交的零空间矩阵; 以及用于将波束形成的用户信号投影在相应的零空间矩阵上并通过多个天线发送所得到的信号的投影仪。 因为多用户信号可以保持正交性，所以可以防止由多用户干扰引起的性能下降。

公开(公告)号：US06766340B2

公开(公告)日：2004-07-20

申请号：US10154747

申请日：2002-05-24

申请人： Chung-Yong Lee

发明人： Chung-Yong Lee

IPC分类号： G06F1710

CPC分类号： G06F17/18 ,  H03H17/0261

摘要： A method for filtering signals from a nonlinear dynamical system is provided. An initial enhanced point is set to a noisy point obtained from the signals. An intermediate enhanced point is estimated. A new enhanced point is calculated using the estimated point and a weighting constant. Estimation of an intermediate enhanced point and calculation of a new enhanced point are iterated until the computed point converges to a true enhanced point which represents a noise reduced signal to provide filtered signals, wherein the new enhanced point is computed by the equation {circumflex over (x)}n(i)={circumflex over (x)}n(i−1)+K3[{circumflex over (x)}n(i,temp)−{circumflex over (x)}n(i−1)] wherein {circumflex over (x)}n(i) is the new enhanced point, {circumflex over (x)}n(i-temp) is the intermediate enhanced point for iteration i, {circumflex over (x)}n(i−1) is the enhanced point at iteration i−1, and K3 is a weighing constant.

摘要翻译： 提供了一种从非线性动力系统滤波信号的方法。 将初始增强点设置为从信号获得的噪声点。 估计中间增强点。 使用估计点和加权常数计算新的增强点。 迭代中间增强点的估计和新的增强点的计算，直到计算的点收敛到表示降噪信号以提供滤波信号的真实增强点，其中新的增强点由xn <（i ）是新的增强点，xn <（i-temp）>是迭代i的中间增强点，xn <（i-1）>是迭代i-1的增强点，K3是称重常数。

公开(公告)号：US20120020425A1

公开(公告)日：2012-01-26

申请号：US13262485

申请日：2010-04-02

申请人： Joo-Hyun Lee ,  Sunghwan Kim ,  Jong-Hyeuk Lee ,  Chung-Yong Lee ,  Myoung-Seok Kim ,  Hoon-Dong Noh

发明人： Joo-Hyun Lee ,  Sunghwan Kim ,  Jong-Hyeuk Lee ,  Chung-Yong Lee ,  Myoung-Seok Kim ,  Hoon-Dong Noh

IPC分类号： H04B7/02

CPC分类号： H04B7/0639 ,  H04B7/024 ,  H04L25/0228 ,  H04L25/0246

摘要： The present invention relates to performance improvement in a cell edge, particularly, to a method for selecting a precoder for a terminal in a multiple antenna system, wherein the method comprises: performing channel estimation for reference signals of a serving base station and another base station; determining a minimum singular value by using the channel estimation result; and if a complete collaborative feedback structure is used, feeding back a table of the determined, minimum singular value to the base stations.

摘要翻译： 本发明涉及小区边缘的性能改进，特别涉及用于选择多天线系统中的终端的预编码器的方法，其中该方法包括：对服务基站和另一基站的参考信号执行信道估计 ; 通过使用信道估计结果确定最小奇异值; 并且如果使用完整的协作反馈结构，则将确定的最小奇异值的表反馈给基站。

公开(公告)号：US20100189002A1

公开(公告)日：2010-07-29

申请号：US12677630

申请日：2008-09-11

申请人： In-Kyeong Choi ,  Dong Seung Kwon ,  Ji Won Kang ,  Chung Yong Lee

发明人： In-Kyeong Choi ,  Dong Seung Kwon ,  Ji Won Kang ,  Chung Yong Lee

IPC分类号： H04J1/16 ,  H04B7/216

CPC分类号： H04B7/0617

摘要： The present invention relates to a beamforming method and apparatus. A beamforming method for use in a base station for transmitting a plurality of streams through a plurality of antennas includes: receiving feedback information including information on a first codeword selected from a codebook including a plurality of codewords from each of a plurality of user terminals; grouping the plurality of user terminals by use of the feedback information from each user terminal; determining a user terminal to which a plurality of streams will be assigned of the plurality of user terminals, and determining a second codeword to be used for beamforming from the codebook by use of the feedback information of each user terminal and grouping information; and multiplying data to be transmitted through the plurality of steams by the second codeword and a unitary matrix.

摘要翻译： 本发明涉及一种波束形成方法和装置。 一种在基站中用于通过多个天线发送多个流的波束成形方法包括：从多个用户终端中的每一个接收包括从包括多个码字的码本中选择的第一码字的信息的反馈信息; 通过使用来自每个用户终端的反馈信息对多个用户终端进行分组; 确定将分配多个用户终端的多个流的用户终端，以及通过使用每个用户终端的反馈信息和分组信息来确定要用于来自码本的波束形成的第二码字; 以及将通过所述多个蒸汽发送的数据乘以所述第二码字和酉矩阵。

公开(公告)号：US07746936B2

公开(公告)日：2010-06-29

申请号：US11743147

申请日：2007-05-02

申请人： Dong-Seung Kwon ,  Young-Seog Song ,  In-Kyeong Choi ,  Chung-Yong Lee ,  Myeong-Cheol Shin ,  Myoung-Seog Kim ,  Seung-Joon Lee

发明人： Dong-Seung Kwon ,  Young-Seog Song ,  In-Kyeong Choi ,  Chung-Yong Lee ,  Myeong-Cheol Shin ,  Myoung-Seog Kim ,  Seung-Joon Lee

IPC分类号： H04B14/04 ,  H04L7/02

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。

公开(公告)号：US07630380B2

公开(公告)日：2009-12-08

申请号：US11392407

申请日：2006-03-29

申请人： Jae-Hak Chung ,  Ji-Won Kang ,  Ye-Hoon Lee ,  Seung-Hoon Nam ,  Chung-Yong Lee ,  Hak-Ju Lee

发明人： Jae-Hak Chung ,  Ji-Won Kang ,  Ye-Hoon Lee ,  Seung-Hoon Nam ,  Chung-Yong Lee ,  Hak-Ju Lee

IPC分类号： H04L12/28

CPC分类号： H04W72/1257 ,  H04B7/0452 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0075 ,  H04W72/1231

摘要： Provided is a scheduling apparatus and method for allocating resources to individual users in a multiantenna system. The method includes determining a ratio of time slots to be allocated according to a ratio desired by each of the terminals in every specific time slot interval, calculating a channel capacity average and a standard deviation for each terminal according to channel capacity reported from each terminal for a specific time, and determining, based on the determined ratio of time slots, a terminal to which a specific time slot is to be allocated according to the channel capacity average and the standard deviation, calculated for each terminal, and the last reported channel capacity.

摘要翻译： 提供了一种用于在多天线系统中向各个用户分配资源的调度装置和方法。 该方法包括根据每个特定时隙间隔中的每个终端所期望的比率来确定要分配的时隙的比率，根据从每个终端报告的信道容量来计算每个终端的信道容量平均值和标准偏差 并且根据所确定的时隙比例，根据对每个终端计算的信道容量平均值和标准偏差以及最后报告的信道容量来确定要分配特定时隙的终端 。

公开(公告)号：US20080013642A1

公开(公告)日：2008-01-17

申请号：US11777361

申请日：2007-07-13

申请人： Seung-Hoon Nam ,  Dae-Young Park ,  Chung-Yong Lee ,  Jae-Sang Ham ,  Kyeong-Yeon Kim ,  Bal-Geum Chol

发明人： Seung-Hoon Nam ,  Dae-Young Park ,  Chung-Yong Lee ,  Jae-Sang Ham ,  Kyeong-Yeon Kim ,  Bal-Geum Chol

IPC分类号： H04B7/02

CPC分类号： H04B7/0619 ,  H04B7/0669 ,  H04B7/0673 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0625

摘要： An apparatus and method for selecting a Space-Time Coding (STC) scheme in a Multiple-Input Multiple-Output (MIMO) system are provided. Upon generation of a data transmission event, a transmitter receives a feedback signal, encodes transmission data using an STC scheme indicated by the feedback signal, and transmits the code symbols to a receiver, and the receiver measures interference factors of available STC schemes using the received code symbols, selects an STC scheme with a smaller interference factor, and notifies the transmitter of the selected STC scheme by a feedback signal.

摘要翻译： 提供了一种用于在多输入多输出（MIMO）系统中选择时空编码（STC）方案的装置和方法。 在生成数据传输事件时，发射机接收反馈信号，使用由反馈信号指示的STC方案对传输数据进行编码，并将代码符号发送到接收机，并且接收机使用接收到的方法来测量可用STC方案的干扰因子 代码符号，选择具有较小干扰因子的STC方案，并通过反馈信号向发射机通知所选择的STC方案。

公开(公告)号：US20060203777A1

公开(公告)日：2006-09-14

申请号：US11374735

申请日：2006-03-14

申请人： Eung-sun Kim ,  Jee-Sang Ham ,  Jong-Hyeuk Lee ,  Chung-Yong Lee ,  Sei-Joon Shim ,  Kyeong-Yeon Kim

发明人： Eung-sun Kim ,  Jee-Sang Ham ,  Jong-Hyeuk Lee ,  Chung-Yong Lee ,  Sei-Joon Shim ,  Kyeong-Yeon Kim

IPC分类号： H04Q7/00 ,  H04L1/02 ,  H04B1/02 ,  H04B17/02

CPC分类号： H04L1/0675 ,  H04L1/0003 ,  H04L1/0656

摘要： A user allocating apparatus and method in a multiple antenna mobile communication system supporting multi-user diversity is provided. Each user calculates effective Signal-to-Interference Noise Ratios (SINRs) and bit loading over every possible detection order and selects a detection order maximizing the number of channels with a minimum product of the minimum symbol distance of a modulation scheme and an effective SINR, thereby minimizing an average error probability. A base station receives detection orders from users and selects a user with a maximum detection order value. The base station then transmits data to the selected user using modulation schemes determined by the user for the transmit antennas.