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：US07920646B2

公开(公告)日：2011-04-05

申请号：US11722049

申请日：2005-12-21

申请人： Choong-Il Yeh ,  Young-Seog Song ,  In-Kyeong Choi ,  Dong-Seung Kwon

发明人： Choong-Il Yeh ,  Young-Seog Song ,  In-Kyeong Choi ,  Dong-Seung Kwon

IPC分类号： H04L27/00

CPC分类号： H04B7/0695 ,  H04B7/0634

摘要： The present invention relates to a system for selecting a switched beam for supplying a maximum received power to a subscriber station, and a method thereof. The number of switched beams used by a base station is limited, and a weight value vector for forming the switched beam is predefined. The subscriber station uses a pilot signal for discerning transmitting antennas to estimate channel values for the respective transmitting antennas, and uses the channel values and the predefined weight value vectors to determine a switched beam for supplying a maximum signal-to-noise ratio (SNR). The subscriber station notifies the base station of an identifier of a selected beam by using a feedback channel, and the base station uses the switched beam to transmit traffic data.

摘要翻译： 本发明涉及一种用于选择向用户站提供最大接收功率的切换波束的系统及其方法。 基站使用的切换波束的数量是有限的，并且预定了用于形成切换波束的权重值向量。 用户站使用导频信号来识别发射天线以估计各个发射天线的信道值，并且使用信道值和预定权重值向量来确定用于提供最大信噪比（SNR）的切换波束， 。 用户台通过使用反馈信道向基站通知所选波束的标识符，并且基站使用切换波束来传输业务数据。

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：US07075916B2

公开(公告)日：2006-07-11

申请号：US09930217

申请日：2001-08-16

申请人： Young Wha Kim ,  Seong Rag Kim ,  In-Kyeong Choi

发明人： Young Wha Kim ,  Seong Rag Kim ,  In-Kyeong Choi

IPC分类号： H04B7/216

CPC分类号： H04B1/71075

摘要： The present invention relates to a receiver applicable to a code division multiple access system having multiple transfer rates. In a CDMA system, when performing a de-spreading process to extract information from received data in which various terminal signals or multiple path signals are asynchronously mixed, interference between a plurality of users or paths tends to occur. The present invention proposes an interference canceller for effectively canceling the interference between the users or paths. For this, the present invention implements a parallel interference canceller for estimating in parallel interference signals from asynchronously received signals and canceling the estimated interference signals from the received signals. In the present invention, when implementing a parallel interference canceller for asynchronously received signals, as bit information of the received signals is not aligned in the same time frame, the following conditions are considered. First, the accuracy of interference cancellation is maintained. Second, the time delay of signal processing is minimized to minimize the time delay of the entire system. In the present invention, in order to achieve these objects, reproduction of interference signals and the subtraction operation are optimized based on the arrival points and end points based of the fastest signal and the latest signal among the asynchronously received signals.

公开(公告)号：US08509336B2

公开(公告)日：2013-08-13

申请号：US12740896

申请日：2008-06-24

申请人： Choong il Yeh ,  In-Kyeong Choi ,  Young Seog Song ,  Seung Joon Lee ,  Byung-Jae Kwak ,  Ji Hyung Kim ,  Dong Seung Kwon ,  Joon Doo Kim ,  Ji Won Kang ,  Chung Yong Lee

发明人： Choong il Yeh ,  In-Kyeong Choi ,  Young Seog Song ,  Seung Joon Lee ,  Byung-Jae Kwak ,  Ji Hyung Kim ,  Dong Seung Kwon ,  Joon Doo Kim ,  Ji Won Kang ,  Chung Yong Lee

IPC分类号： H04L1/02

CPC分类号： H04B7/0413 ,  H04B7/0465 ,  H04L25/03343 ,  H04L2025/0342 ,  H04L2025/03426

摘要： Disclosed is a transmitting/receiving method in a multi-user multiple-input multiple-output (MU-MIMO) channel. The transmitting method includes: performing QR decomposition on a Hermitian transpose matrix of a channel matrix to obtain a first matrix and a second matrix as a triangular matrix; obtaining a preprocessing matrix by using the first matrix; and forming an effective channel based on the preprocessing matrix by a block triangulation technique.

摘要翻译： 公开了一种多用户多输入多输出（MU-MIMO）信道中的发送/接收方法。 发送方法包括：对信道矩阵的厄米转置矩阵执行QR分解以获得第一矩阵和第二矩阵作为三角矩阵; 通过使用第一矩阵获得预处理矩阵; 并通过块三角测量技术形成基于预处理矩阵的有效信道。

公开(公告)号：US20100310001A1

公开(公告)日：2010-12-09

申请号：US12740896

申请日：2008-06-24

申请人： Choong il Yeh ,  In-Kyeong Choi ,  Young Seog Song ,  Seung Joon Lee ,  Byung-Jae Kwak ,  Ji Hyung Kim ,  Dong Seung Kwon ,  Joon Doo Kim ,  Ji Won Kang ,  Chung Yong Lee

发明人： Choong il Yeh ,  In-Kyeong Choi ,  Young Seog Song ,  Seung Joon Lee ,  Byung-Jae Kwak ,  Ji Hyung Kim ,  Dong Seung Kwon ,  Joon Doo Kim ,  Ji Won Kang ,  Chung Yong Lee

IPC分类号： H04L1/02

CPC分类号： H04B7/0413 ,  H04B7/0465 ,  H04L25/03343 ,  H04L2025/0342 ,  H04L2025/03426

摘要： Disclosed is a transmitting/receiving method in a multi-user multiple-input multiple-output (MU-MIMO) channel. The transmitting method includes: performing QR decomposition on a Hermitian transpose matrix of a channel matrix to obtain a first matrix and a second matrix as a triangular matrix; obtaining a preprocessing matrix by using the first matrix; and forming an effective channel based on the preprocessing matrix by a block triangulation technique.

摘要翻译： 公开了一种多用户多输入多输出（MU-MIMO）信道中的发送/接收方法。 发送方法包括：对信道矩阵的厄米转置矩阵执行QR分解以获得第一矩阵和第二矩阵作为三角矩阵; 通过使用第一矩阵获得预处理矩阵; 并通过块三角测量技术形成基于预处理矩阵的有效信道。

公开(公告)号：US07634030B2

公开(公告)日：2009-12-15

申请号：US10334634

申请日：2002-12-31

申请人： Seong Rag Kim ,  Young Ho Jung ,  In-Kyeong Choi ,  Yong Hoon Lee

发明人： Seong Rag Kim ,  Young Ho Jung ,  In-Kyeong Choi ,  Yong Hoon Lee

IPC分类号： H04L27/06

CPC分类号： H04B7/0413 ,  H04B7/0613 ,  H04B7/0851 ,  H04B7/0854

摘要： A transmission apparatus for a DS/CDMA system including a multiple-input multiple output MIMO antenna system is disclosed. The apparatus includes a transmitter for transmitting data by applying a different scramble code to each transmitted data through a plurality of transmitting antennas. The apparatus also includes a receiver for receiving the transmitted data by obtaining a diversity gain based on the maximum order of the diversity in order to effectively detect the data. The present invention achieves an excellent detection performance by receiving data with a full order of diversity, which is a multiple of the number of receiving antennas and the number of multipath, without complicated operation such as a decision feed equalizer.

摘要翻译： 公开了一种包括多输入多输出MIMO天线系统的DS / CDMA系统的发送装置。 该装置包括：发射机，用于通过多个发射天线向每个发送的数据应用不同的密码来发送数据。 该装置还包括接收器，用于通过基于分集的最大顺序获得分集增益来接收所发送的数据，以便有效地检测数据。 本发明通过以分集的全部数量接收数据来实现优异的检测性能，分集数是接收天线的数量和多径的数量，而无需诸如决策馈送均衡器的复杂操作。

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。

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。

公开(公告)号：US08107514B2

公开(公告)日：2012-01-31

申请号：US11721110

申请日：2005-12-09

申请人： Seung-Joon Lee ,  Dong-Seung Kwon ,  Seong-Rag Kim ,  In-Kyeong Choi

发明人： Seung-Joon Lee ,  Dong-Seung Kwon ,  Seong-Rag Kim ,  In-Kyeong Choi

IPC分类号： H04B1/38

CPC分类号： H04L25/0208 ,  H04L1/0631 ,  H04L1/0668

摘要： A receiver according to an exemplary embodiment of the present invention receives a transmitted signal, converts the signal to a predetermined symbol, and estimates channel information including a channel gain of a channel of the transmitted signal. In addition, the receiver generates an intermediate processing value for decoding the signal based on the estimated channel information and the symbol, and normalizes the intermediate processing value to the channel gain to generate a reference value. The generated reference value is used for a soft-decision value for decoding the signal. In addition, when the signal is decoded by using a hard-decision value, a constellation point value that is closest to the reference values is generated and set as the hard-decision value.

摘要翻译： 根据本发明的示例性实施例的接收机接收发送信号，将该信号转换成预定符号，并且估计包括发送信号的信道的信道增益的信道信息。 此外，接收器基于估计的信道信息和符号生成用于对信号进行解码的中间处理值，并且将中间处理值归一化为信道增益以生成参考值。 生成的参考值用于解码信号的软判决值。 此外，当通过使用硬判决值来解码信号时，生成最接近参考值的星座点值并将其设置为硬判定值。