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1. 发明申请

US20110122958A1 POWER LOADING TRANSMIT BEAMFORMING IN MIMO-OFDM WIRELESS COMMUNICATION SYSTEMS 失效
标题翻译： MIMO-OFDM无线通信系统中的功率负载发射波束
公开(公告)号：US20110122958A1
公开(公告)日：2011-05-26
申请号：US13018062
申请日：2011-01-31
申请人： Chang-Soo Koo , Nirav Shah , Robert Lind Olesen
发明人： Chang-Soo Koo , Nirav Shah , Robert Lind Olesen
IPC分类号： H04W52/00
CPC分类号： H04L25/0248 , H04B7/043 , H04B7/0434 , H04B7/0443 , H04L27/2601 , H04L27/2602 , H04W28/18 , H04W52/346 , H04W52/42
摘要： A method is disclosed for tuning a beamformed signal in wireless communications including a plurality of sub-carriers and a plurality of eigenbeams. The method includes adjusting a total gain of each of the plurality of sub-carriers and eigenbeams, and applying the adjusted total gain to each of the sub-carriers and each of the eigenbeams.
摘要翻译：公开了一种用于在包括多个子载波和多个本征波束的无线通信中调谐波束形成信号的方法。该方法包括调整多个子载波和特征波束中的每一个的总增益，以及将调整的总增益应用于每个子载波和每个本征波束。

2. 发明申请

US20070218952A1 POWER LOADING TRANSMIT BEAMFORMING IN MIMO-OFDM WIRELESS COMMUNICATION SYSTEMS 失效
标题翻译： MIMO-OFDM无线通信系统中的功率负载发射波束
公开(公告)号：US20070218952A1
公开(公告)日：2007-09-20
申请号：US11683797
申请日：2007-03-08
申请人： Chang-Soo Koo , Nirav Shah , Robert Lind Olesen
发明人： Chang-Soo Koo , Nirav Shah , Robert Lind Olesen
IPC分类号： H04M1/00
CPC分类号： H04L25/0248 , H04B7/043 , H04B7/0434 , H04B7/0443 , H04L27/2601 , H04L27/2602 , H04W28/18 , H04W52/346 , H04W52/42
摘要： In a wireless communication system including a plurality of sub-carriers and a plurality of eigenbeams, a method for tuning a beamformed signal. The method includes adjusting a total gain of each of the plurality of sub-carriers and eigenbeams, and applying the adjusted total gain to each of the sub-carriers and each of the eigenbeams.
摘要翻译：在包括多个子载波和多个本征波束的无线通信系统中，一种用于调谐波束形成信号的方法。该方法包括调整多个子载波和特征波束中的每一个的总增益，以及将调整的总增益应用于每个子载波和每个本征波束。

3. 发明授权

US07881265B2 Power loading transmit beamforming in MIMO-OFDM wireless communication systems 失效
标题翻译：功率负载发射波束成形在MIMO-OFDM无线通信系统中
公开(公告)号：US07881265B2
公开(公告)日：2011-02-01
申请号：US11683797
申请日：2007-03-08
申请人： Chang-Soo Koo , Nirav Shah , Robert Lind Olesen
发明人： Chang-Soo Koo , Nirav Shah , Robert Lind Olesen
IPC分类号： H04W4/00 , H04B7/02 , H04L1/02 , H04B7/00
CPC分类号： H04L25/0248 , H04B7/043 , H04B7/0434 , H04B7/0443 , H04L27/2601 , H04L27/2602 , H04W28/18 , H04W52/346 , H04W52/42
摘要： In a wireless communication system including a plurality of sub-carriers and a plurality of eigenbeams, a method for tuning a beamformed signal. The method includes adjusting a total gain of each of the plurality of sub-carriers and eigenbeams, and applying the adjusted total gain to each of the sub-carriers and each of the eigenbeams.
摘要翻译：在包括多个子载波和多个本征波束的无线通信系统中，一种用于调谐波束形成信号的方法。该方法包括调整多个子载波和特征波束中的每一个的总增益，以及将调整的总增益应用于每个子载波和每个本征波束。

4. 发明授权

US09160492B2 Method and apparatus for combining space-frequency block coding spatial multiplexing and beamforming in a MIMO-OFDM system 有权
标题翻译：用于在MIMO-OFDM系统中组合空间频率块编码空间复用和波束成形的方法和装置
公开(公告)号：US09160492B2
公开(公告)日：2015-10-13
申请号：US13369768
申请日：2012-02-09
申请人： Jaeyoung Kwak , Chang-Soo Koo , Robert Lind Olesen , Aykut Bultan , Fatih Ozluturk
发明人： Jaeyoung Kwak , Chang-Soo Koo , Robert Lind Olesen , Aykut Bultan , Fatih Ozluturk
IPC分类号： H04K1/10 , H04L27/28 , H04L1/06 , H04B7/04 , H04B7/06 , H04L1/04 , H04L27/26 , H04L1/00 , H04L25/02
CPC分类号： H04L1/0606 , H04B7/0408 , H04B7/0413 , H04B7/0697 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/04 , H04L5/0007 , H04L25/0248 , H04L27/2601 , H04L27/2626 , H04L27/2647
摘要： A method and apparatus for combining space-frequency block coding (SFBC) and frequency shift transmit diversity (FSTD) in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system.
摘要翻译：一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC）和频移发射分集（FSTD）的方法和装置。

5. 发明申请

US20120140845A1 METHOD AND APPARATUS FOR COMBINING SPACE-FREQUENCY BLOCK CODING SPATIAL MULTIPLEXING AND BEAMFORMING IN A MIMO-OFDM SYSTEM 审中-公开
标题翻译：在MIMO-OFDM系统中组合空间块编码空间多路复用和波束成形的方法与装置
公开(公告)号：US20120140845A1
公开(公告)日：2012-06-07
申请号：US13369768
申请日：2012-02-09
申请人： Jaeyoung Kwak , Chang-Soo Koo , Robert Lind Olesen , Aykut Bultan , Fatih Ozluturk
发明人： Jaeyoung Kwak , Chang-Soo Koo , Robert Lind Olesen , Aykut Bultan , Fatih Ozluturk
IPC分类号： H04L27/04
CPC分类号： H04L1/0606 , H04B7/0408 , H04B7/0413 , H04B7/0697 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/04 , H04L5/0007 , H04L25/0248 , H04L27/2601 , H04L27/2626 , H04L27/2647
摘要： A method and apparatus for combining space-frequency block coding (SFBC) and frequency shift transmit diversity (FSTD) in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system.
摘要翻译：一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC）和频移发射分集（FSTD）的方法和装置。

6. 发明授权

US08295401B2 Method and apparatus for implementing space time processing with unequal modulation and coding schemes 有权
标题翻译：用于实现具有不等调制和编码方案的时空处理的方法和装置
公开(公告)号：US08295401B2
公开(公告)日：2012-10-23
申请号：US11621755
申请日：2007-01-10
申请人： Robert Lind Olesen , Eldad M. Zeira , Peter J. Voltz , Yongwen E. Yang , Qingyuan Dai , Chang-Soo Koo , I-Tai Lu , KunJu Tsai
发明人： Robert Lind Olesen , Eldad M. Zeira , Peter J. Voltz , Yongwen E. Yang , Qingyuan Dai , Chang-Soo Koo , I-Tai Lu , KunJu Tsai
IPC分类号： H04L27/00 , H04B7/10
CPC分类号： H04L1/0643 , H04B7/0456 , H04B7/0619 , H04B7/0626 , H04B7/0669 , H04B7/0697 , H04B7/0837 , H04B7/0891 , H04B17/336 , H04L1/0003 , H04L1/0009 , H04L1/0606 , H04L1/0625 , H04L1/0631 , H04L27/2626 , H04L27/2647 , H04W84/12
摘要： A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.
摘要翻译：公开了一种用于实现具有不等调制和编码方案（MCS）或流依赖MCS的空间处理的方法和装置。输入数据可以被解析成多个数据流，并且对数据流执行空间处理以产生多个空间流。独立地选择每个数据流的MCS。空间流通过多个发射天线发射。可以对空间时间块编码（STBC），空间频率块编码（SFBC），准正交Alamouti编码，时间反转空间时间块编码，线性空间处理和循环延迟分集（CDD）的技术中的至少一种进行数据/空间流。然后可以将天线映射矩阵应用于空间流。空间流通过多个发射天线发射。可以基于与数据流相关联的每个空间流的信噪比来确定每个数据流的MCS。

7. 发明授权

US07602855B2 Method and apparatus for singular value decomposition of a channel matrix 失效
标题翻译：用于信道矩阵的奇异值分解的方法和装置
公开(公告)号：US07602855B2
公开(公告)日：2009-10-13
申请号：US11392025
申请日：2006-03-29
申请人： Chang-Soo Koo , Robert Lind Olesen
发明人： Chang-Soo Koo , Robert Lind Olesen
IPC分类号： H04B7/02
CPC分类号： H04B7/0417 , G06F17/16 , H04B7/0408 , H04B7/0617 , H04B7/0634 , H04B7/0663 , H04L25/0208 , H04L25/0248 , H04L27/2647
摘要： A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated for channels between transmit antennas and receive antennas. A Hermitian matrix A=HHH or A=HHH is created. A Jacobi process is cyclically performed on the matrix A to obtain Q and DA matrixes such that A=QDAQH. DA is a diagonal matrix obtained by singular value decomposition (SVD) on the A matrix. In each Jacobi transformation, real part diagonalization is performed to annihilate real parts of off-diagonal elements of the matrix and imaginary part diagonalization is performed to annihilate imaginary parts of off-diagonal elements of the matrix after the real part diagonalization. U, V and DH matrixes of H matrix are then calculated from the Q and DA matrices. DH is a diagonal matrix comprising singular values of the H matrix.
摘要翻译：公开了一种在无线通信系统中分解信道矩阵的方法和装置。为发射天线和接收天线之间的信道生成信道矩阵H. 创建Hermitian矩阵A = HHH或A = HHH。在矩阵A上循环执行Jacobi过程以获得Q和DA矩阵，使得A = QDAQH。 DA是通过在A矩阵上的奇异值分解（SVD）获得的对角矩阵。在每个雅可比变换中，执行实部对角化以湮灭矩阵的非对角元素的实部，并且执行虚部对角化以在实部对角化之后湮灭矩阵的非对角元素的虚部。然后从Q和DA矩阵计算H矩阵的U，V和DH矩阵。 DH是包括H矩阵的奇异值的对角矩阵。

8. 发明申请

US20080195917A1 METHOD AND APPARATUS FOR LOW COMPLEXITY SOFT OUTPUT DECODING FOR QUASI-STATIC MIMO CHANNELS 审中-公开
标题翻译：用于准静态MIMO信道的低复杂度软输出解码的方法和装置
公开(公告)号：US20080195917A1
公开(公告)日：2008-08-14
申请号：US12028612
申请日：2008-02-08
申请人： Chang-Soo Koo , Nirav B. Shah , Robert Lind Olesen
发明人： Chang-Soo Koo , Nirav B. Shah , Robert Lind Olesen
IPC分类号： H03M13/00
CPC分类号： H03M13/451 , H04L1/0631 , H04L25/03203 , H04L25/03318 , H04L2025/03426
摘要： A method and apparatus for soft output decoding of multi-input multi-output (MIMO) channels in order to improve throughput performance is provided. In particular, a low-cost alternative to exhaustive brute-force maximum-likelihood search by using a variant of list decoding that exploits pre-coder linearity to reduce the computational complexity in generating a list of candidate codewords for decoding is disclosed.
摘要翻译：提供了一种用于多输入多输出（MIMO）信道的软输出解码以便提高吞吐量性能的方法和装置。特别地，公开了通过使用利用预编码器线性度的列表解码的变体以减少生成用于解码的候选码字列表的计算复杂度的穷举强力最大似然搜索的低成本替代方案。

9. 发明授权

US08705389B2 Quality control scheme for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems 有权
标题翻译：用于多输入多输出（MIMO）正交频分复用（OFDM）系统的质量控制方案
公开(公告)号：US08705389B2
公开(公告)日：2014-04-22
申请号：US12983491
申请日：2011-01-03
申请人： Chang-Soo Koo , Robert Lind Olesen
发明人： Chang-Soo Koo , Robert Lind Olesen
IPC分类号： H04J1/16 , H04L1/00
CPC分类号： H04B7/0417 , H04B17/336 , H04L1/0002 , H04L1/0026 , H04L5/0023 , H04L5/0046 , H04L5/006 , H04L5/0064 , H04L27/2601 , Y02D50/10
摘要： A method and apparatus for optimizing the system capacity of an Orthogonal Frequency Division Multiplexing (OFDM) system that uses with Multiple-Input Multiple-Output (MIMO) antennas. In a receiver, a target quality of service (QoS) metric and reference data rate are set. The target QoS metric may be set to a predetermined value and/or may be adjusted dynamically with respect to packet error rate (PER) by a slow outer-loop control processor. The QoS of received signals are compared to the target QoS. Depending on the comparison, the receiver generates a channel quality indicator (CQI) which is sent to the transmitter. The CQI is a one or two bit indicator which indicates to the transmitter to disable, adjust or maintain data transmission rates of particular sub-carriers, groups of sub-carriers per transmit antenna, or groups of sub-carriers across all transmit antennas. At the transmitter, the transmitted data rate is disabled, adjusted or maintained.
摘要翻译：一种用于优化与多输入多输出（MIMO）天线一起使用的正交频分复用（OFDM）系统的系统容量的方法和装置。在接收机中，设置目标服务质量（QoS）度量和参考数据速率。可以将目标QoS度量设置为预定值和/或可以通过慢速外部环路控制处理器相对于分组错误率（PER）动态地调整。将接收到的信号的QoS与目标QoS进行比较。根据比较，接收机产生发送到发射机的信道质量指示符（CQI）。 CQI是一个或两个比特指示符，其向发射机指示禁用，调整或维持特定子载波，每个发射天线的子载波组或跨所有发射天线的子载波组的数据传输速率。在发射机处，传输的数据速率被禁用，调整或维护。

10. 发明授权

US08019036B2 Method and apparatus for correcting sampler clock frequency offset in OFDM MIMO systems 失效
标题翻译： OFDM MIMO系统中校准采样器时钟频率偏移的方法和装置
公开(公告)号：US08019036B2
公开(公告)日：2011-09-13
申请号：US11681341
申请日：2007-03-02
申请人： Peter J. Voltz , Robert Lind Olesen , I-Tai Lu , Chang-Soo Koo , Qingyuan Dai , Yongwen E. Yang , Hui-Yuan Teng
发明人： Peter J. Voltz , Robert Lind Olesen , I-Tai Lu , Chang-Soo Koo , Qingyuan Dai , Yongwen E. Yang , Hui-Yuan Teng
IPC分类号： H03D3/24
CPC分类号： H04L27/2662 , H04L5/0023 , H04L25/0244 , H04L27/0014 , H04L27/266 , H04L27/2672
摘要： In an orthogonal frequency division multiplexed (OFDM) multiple-in multiple-out (MIMO) wireless communication system, a method for correcting sampler clock frequency offset in a receiver comprises acquiring the frequency offset and symbol timing in a received signal by the receiver. The estimated value of a fractional offset is computed, and a correction in the frequency domain based upon the estimated value of the fractional offset is performed.
摘要翻译：在正交频分多路复用（OFDM）多输入多输出（MIMO）无线通信系统中，用于在接收机中校正采样器时钟频率偏移的方法包括：由接收机获取接收信号中的频率偏移和符号定时。计算分数偏移的估计值，并且基于分数偏移的估计值执行频域中的校正。

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