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41. 发明授权

US07983322B2 Method and system for codebook design of MIMO pre-coders with finite rate channel state information feedback 有权
标题翻译：具有有限速率信道状态信息反馈的MIMO预编码器的码本设计方法和系统
公开(公告)号：US07983322B2
公开(公告)日：2011-07-19
申请号：US11767071
申请日：2007-06-22
申请人： Mark Kent , Vinko Erceg , Jun Zheng
发明人： Mark Kent , Vinko Erceg , Jun Zheng
IPC分类号： H04L27/30
CPC分类号： H04B7/0645 , H04B7/0417 , H04B7/0639 , H04B7/0663 , H04L25/0204 , H04L25/0248 , H04L25/03343 , H04L2025/03426 , H04L2025/03611 , H04L2025/03802
摘要： Aspects of a method and system for codebook design of MIMO pre-coders with finite rate channel state information feedback may include quantizing channel state information in a MIMO pre-coding system onto a codebook, which include unitary matrices, using a cost function. The codebook may be iteratively updated based on at least the channel state information. The channel state information may comprise a matrix V. The cost function f(A) is defined by the following relationship: f ⁡ ( A ) = ( 1 N ⁢ ∑ j = 1 N ⁢ ⁢  a jj  2 ) where A is a matrix of size N by N and aij is element (i,j) of matrix A. Voronoi regions may be generated from the codebook for the unitary matrices. A set of matrices based on the Voronoi regions and the unitary matrices may be generated. Updating the codebook may be achieved by modifying the set of matrices into a new set of unitary matrices, where the new set of unitary matrices become the codebook.
摘要翻译：用于具有有限速率信道状态信息反馈的MIMO预编码器的码本设计的方法和系统的方面可以包括：使用成本函数将MIMO预编码系统中的信道状态信息量化到包括单位矩阵的码本上。至少基于信道状态信息可以迭代地更新码本。信道状态信息可以包括矩阵V.成本函数f（A）由以下关系定义：f⁡（A）=（1NΣj = 1 N⁢2）其中A是大小N乘以N的矩阵和aij是矩阵A的元素（i，j）。可以从用于单位矩阵的码本生成沃罗尼诺（Voronoi）区域。可以生成基于Voronoi区域和酉矩阵的一组矩阵。可以通过将矩阵集合修改为新的酉矩阵集合来实现更新码本，其中新的酉矩阵集合成为码本。

42. 发明申请

US20110164695A1 METHOD AND SYSTEM FOR SELECTING A USER GROUP USING HYBRID-QUANTIZED CHANNEL DIRECTION INFORMATION FEEDBACKS FROM MIMO CAPABLE MOBILE DEVICES 有权
标题翻译：使用来自MIMO能力移动设备的混合量化信道方向信息反馈选择用户组的方法和系统
公开(公告)号：US20110164695A1
公开(公告)日：2011-07-07
申请号：US12652137
申请日：2010-01-05
申请人： Jun Zheng , Mark Kent , Vinko Erceg
发明人： Jun Zheng , Mark Kent , Vinko Erceg
IPC分类号： H04K1/10
CPC分类号： H04L25/0242 , H04B7/086 , H04W16/28 , H04W24/00 , H04W24/10
摘要： A mobile device receives beams orthogonal to a single user downlink MIMO channel associated with a selected first user in a user group. The mobile device estimates relative channel direction information with respect to the received beams for an associated single user downlink MIMO channel. The estimated relative channel direction information is hybrid-quantized to generate a semi-orthogonal matrix transmitted to the base station over a finite-rate feedback link. The mobile device receives downlink data transmission according to the hybrid-quantized relative channel direction information. The base station receives multiple semi-orthogonal matrices from remaining mobile devices to generate a semi-orthogonal group for the selected first user. A mobile device having the strongest quantized projected channel capacity is selected from the generated semi-orthogonal group as a second user. Mutual channel capacity information for the selected first and second users is determined to schedule corresponding downlink data transmissions, accordingly.
摘要翻译：移动设备接收与用户组中与所选择的第一用户相关联的单个用户下行MIMO信道正交的波束。移动设备针对相关联的单用户下行MIMO信道估计相对于所接收的波束的相对信道方向信息。估计的相对信道方向信息被混合量化以产生通过有限速率反馈链路发送到基站的半正交矩阵。移动设备根据混合量化的相对信道方向信息接收下行链路数据传输。基站从剩余的移动设备接收多个半正交矩阵，以生成所选择的第一用户的半正交组。作为第二用户，从所生成的半正交组中选择具有最强量化的投影信道容量的移动设备。确定所选择的第一和第二用户的相互信道容量信息相应地调度相应的下行链路数据传输。

43. 发明授权

US07894506B2 Method and system for a delta quantizer for MIMO pre-coders with finite rate channel state information feedback 有权
标题翻译：用于具有有限速率信道状态信息反馈的MIMO预编码器的Δ量化器的方法和系统
公开(公告)号：US07894506B2
公开(公告)日：2011-02-22
申请号：US11767123
申请日：2007-06-22
申请人： Mark Kent , Vinko Erceg , Jun Zheng
发明人： Mark Kent , Vinko Erceg , Jun Zheng
IPC分类号： H04L27/30
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0639 , H04B7/0641
摘要： Aspects of a method and system for a delta quantizer for MIMO pre-coders with finite rate channel state information feedback may include quantizing a change in channel state information in a MIMO pre-coding system onto a codebook, which comprises one or more unitary matrices, using a cost function. The codebook may be generated based on at least the channel state information. The channel state information may comprise a matrix V and the cost function f(A) may be defined by the following relationship: f ⁡ ( A ) = ( 1 N ⁢ ∑ j = 1 N ⁢  a jj  2 ) where A is a matrix of size N by N and aij is element (i,j) of matrix A. One or more unitary matrices may be generated from at least a first set of matrices and a second set of matrices, where the first set of matrices may comprise one or more Givens matrices. A dynamic range and a resolution of the codebook may be modified.
摘要翻译：用于具有有限速率信道状态信息反馈的MIMO预编码器的Δ量化器的方法和系统的方面可以包括将MIMO预编码系统中的信道状态信息的变化量化到包括一个或多个酉矩阵的码本上，使用成本函数。码本可以至少基于信道状态信息生成。信道状态信息可以包括矩阵V，并且成本函数f（A）可以由以下关系定义：f⁡（A）=（1NΣj = 1 Na jj钟2）其中A是尺寸N乘N的矩阵和aij是矩阵A的元素（i，j）。可以从至少第一组矩阵和第二组矩阵生成一个或多个酉矩阵，其中第一组矩阵可以包括一个或多个Givens矩阵。可以修改码本的动态范围和分辨率。

44. 发明申请

US20080272953A1 METHOD AND SYSTEM FOR CODEBOOK DESIGN FOR PRE-CODING TECHNIQUES 有权
标题翻译：用于预编码技术的编码设计的方法和系统
公开(公告)号：US20080272953A1
公开(公告)日：2008-11-06
申请号：US12111299
申请日：2008-04-29
申请人： Jun Zheng , Vinko Erceg , Mark Kent
发明人： Jun Zheng , Vinko Erceg , Mark Kent
IPC分类号： H04L17/02
CPC分类号： H04L25/03343 , H04L25/0204 , H04L25/0248 , H04L27/18 , H04L2025/03401 , H04L2025/03426
摘要： Aspects of a method and system for codebook design for pre-coding techniques may include generating one or more matrices whose matrix elements are from a constant amplitude signal constellation, wherein each of the one or more generated matrices may comprise one or more orthonormal columns, and one of the generated one or more matrices may be an identity matrix. Any two of the generated one or more matrices may be separated by at least a minimum pairwise distance. One or more pre-coding codebooks may be generated, each of which may comprise one or more codebook elements that may be of a same matrix rank. Each of the codebook elements may be generated from a subset of columns from one of the generated one or more matrices. A signal may be pre-coded for transmission using the one or more pre-coding codebooks.
摘要翻译：用于预编码技术的码本设计的方法和系统的方面可以包括生成其矩阵元素来自恒定幅度信号星座的一个或多个矩阵，其中所述一个或多个生成的矩阵中的每一个可以包括一个或多个正交列，以及生成的一个或多个矩阵中的一个可以是单位矩阵。生成的一个或多个矩阵中的任何两个可以被至少最小成对距离分开。可以生成一个或多个预编码码本，每个码本可以包括一个或多个可以具有相同矩阵等级的码本元素。可以从所生成的一个或多个矩阵之一的列的子集生成每个码本元素。可以使用一个或多个预编码码本来预先编码用于传输的信号。

45. 发明申请

US20080192704A1 METHOD AND SYSTEM FOR AN ALTERNATING CHANNEL DELTA QUANTIZER FOR MIMO PRE-CODERS WITH FINITE RATE CHANNEL STATE INFORMATION FEEDBACK 有权
标题翻译：用于具有有限速率信道状态信息反馈的MIMO预编码器的交替通道量测器的方法和系统
公开(公告)号：US20080192704A1
公开(公告)日：2008-08-14
申请号：US11847647
申请日：2007-08-30
申请人： Mark Kent , Vinko Erceg , Jun Zheng , Uri Landau
发明人： Mark Kent , Vinko Erceg , Jun Zheng , Uri Landau
IPC分类号： H04B7/216
CPC分类号： H04B7/0434 , H04B7/0417 , H04B7/0626 , H04B7/0639 , H04B7/0641 , H04B7/065 , H04L1/06
摘要： Aspects of a method and system for an alternating channel delta quantizer for MIMO pre-coders with finite rate channel state information feedback may include quantizing a change in channel state information in a MIMO pre-coding system onto a codebook using a cost function and selecting the codebook from a set of codebooks; and generating the set of codebooks from a plurality of codebooks, where each may comprise one or more unitary matrices. The channel state information may be a matrix V that may be generated using Singular Value Decomposition (SVD) and/or Geometric Mean Decomposition (GMD). The selecting of the codebooks may be enabled by alternating between the elements of the set of codebooks. The cost function f(A) may be defined by the following relationship: f  ( A ) = ( 1 N  ∑ j = 1 N   a jj  2 ) where A is a matrix of size N by N and aij is element (i,j) of matrix A.
摘要翻译：用于具有有限速率信道状态信息反馈的MIMO预编码器的交替信道增量量化器的方法和系统的方面可以包括使用成本函数量化MIMO预编码系统中的信道状态信息到码本上的选择来自一组码本的码本; 以及从多个码本生成所述码本集合，其中每个码本可以包括一个或多个酉矩阵。信道状态信息可以是可以使用奇异值分解（SVD）和/或几何平均分解（GMD）生成的矩阵V. 可以通过在该码本集合的元素之间交替来启用码本的选择。成本函数f（A）可以由以下关系定义： $f（A）=（1N>/ MI>2其中A是大小为N的矩阵，N是矩阵A的元素（i，j）。$

46. 发明申请

US20080165870A1 METHOD AND SYSTEM FOR A DELTA QUANTIZER FOR MIMO PRE-CODERS WITH FINITE RATE CHANNEL STATE INFORMATION FEEDBACK 有权
标题翻译：用于具有有限速率信道状态信息反馈的MIMO预编码器的DELTA量子的方法和系统
公开(公告)号：US20080165870A1
公开(公告)日：2008-07-10
申请号：US11767123
申请日：2007-06-22
申请人： Mark Kent , Vinko Erceg , Jun Zheng
发明人： Mark Kent , Vinko Erceg , Jun Zheng
IPC分类号： H04L27/28
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0639 , H04B7/0641
摘要： Aspects of a method and system for a delta quantizer for MIMO pre-coders with finite rate channel state information feedback may include quantizing a change in channel state information in a MIMO pre-coding system onto a codebook, which comprises one or more unitary matrices, using a cost function. The codebook may be generated based on at least the channel state information. The channel state information may comprise a matrix V and the cost function f(A) may be defined by the following relationship: f  ( A ) = ( 1 N  ∑ j = 1 N   a jj  2 ) where A is a matrix of size N by N and aij is element (i,j) of matrix A. One or more unitary matrices may be generated from at least a first set of matrices and a second set of matrices, where the first set of matrices may comprise one or more Givens matrices. A dynamic range and a resolution of the codebook may be modified.
摘要翻译：用于具有有限速率信道状态信息反馈的MIMO预编码器的Δ量化器的方法和系统的方面可以包括将MIMO预编码系统中的信道状态信息的变化量化到包括一个或多个酉矩阵的码本上，使用成本函数。码本可以至少基于信道状态信息生成。信道状态信息可以包括矩阵V，并且成本函数f（A）可以由以下关系定义： $/ MROW> =（1MFRAC>Σj=1N>>其中A是N大小的矩阵，aij是矩阵A的元素（i，j）。一个或多个酉矩阵可以从至少第一组矩阵和第二组矩阵，其中第一组矩阵可以包括一个或多个Givens矩阵。可以修改码本的动态范围和分辨率。$

47. 发明申请

US20090268833A1 METHOD AND SYSTEM FOR PREDICTING CHANNEL QUALITY INDEX (CQI) VALUES FOR MAXIMUM LIKELIHOOD (ML) DETECTION IN A 2X2 MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) WIRELESS SYSTEM 失效
标题翻译：用于预测2X2多输入多输出（MIMO）无线系统中最大比特率（ML）检测的信道质量指数（CQI）值的方法和系统
公开(公告)号：US20090268833A1
公开(公告)日：2009-10-29
申请号：US12430286
申请日：2009-04-27
申请人： Sirikiat Ariyavisitakul , Eric Ojard , Jun Zheng
发明人： Sirikiat Ariyavisitakul , Eric Ojard , Jun Zheng
IPC分类号： H04L5/12 , H04L27/06
CPC分类号： H04L25/0204 , H04B7/0854 , H04B17/24 , H04B17/336 , H04B17/373 , H04L1/0009 , H04L1/0016 , H04L1/0025 , H04L1/0026 , H04L1/20 , H04L25/0228 , H04L25/0248 , H04L25/03343 , H04L25/067 , H04L27/2601 , H04L2025/03426 , H04L2025/03802
摘要： Aspects of a method and system for predicting CQI values for ML detection in a 2×2 MIMO system are presented. In one aspect of the system, a CQI value for a MIMO communication system may be computed based on a computed channel realization by reverse mapping the computed channel realization to a corresponding CQI value. Based on the computed CQI value, a coding rate may be selected. The coding rate may be selected from a lookup table, wherein the computed CQI value is utilized as an index to the lookup table. The reverse mapping may utilize a function, which is computed using radial basis function networks. In another aspect of the system, a joint mutual information value may be computed for the MIMO communication system. The joint mutual information value may be computed based on a Shannon mutual information value and a matched filter mutual information value.
摘要翻译：提出了一种用于在2x2 MIMO系统中预测ML检测的CQI值的方法和系统的方面。在该系统的一个方面，可以基于所计算的信道实现，通过将计算的信道实现反向映射到相应的CQI值来计算MIMO通信系统的CQI值。基于所计算的CQI值，可以选择编码率。编码率可以从查找表中选择，其中所计算的CQI值被用作查找表的索引。反向映射可以利用使用径向基函数网络来计算的函数。在系统的另一方面，可以为MIMO通信系统计算联合互信息值。可以基于香农互信息值和匹配滤波器互信息值来计算联合互信息值。

48. 发明授权

US08750089B2 Method and system for iterative discrete fourier transform (DFT) based channel estimation using minimum mean square error (MMSE) techniques 有权
标题翻译：使用最小均方误差（MMSE）技术的迭代离散傅里叶变换（DFT）信道估计的方法和系统
公开(公告)号：US08750089B2
公开(公告)日：2014-06-10
申请号：US12732975
申请日：2010-03-26
申请人： Sirikiat Ariyavisitakul , Jun Zheng
发明人： Sirikiat Ariyavisitakul , Jun Zheng
IPC分类号： H04J11/00 , H04L25/02 , H04L25/03 , H04L1/00
CPC分类号： H04L25/0204 , H04L1/005 , H04L5/0005 , H04L25/0206 , H04L25/024 , H04L25/0242 , H04L2025/03611 , H04W24/00 , H04W84/12
摘要： A method and system for iterative discrete Fourier transform (DFT) based channel estimation using minimum mean square error (MMSE) techniques are presented. Aspects of the method and system include a procedure for computing channel estimates in both the time domain and frequency domain (or mixed domain) using an iterative DFT method based on MMSE techniques. One aspect of the method and system may achieve low computational complexity and produce more accurate channel estimate values in low signal to noise ratio (SNR) regimes in comparison to conventional DFT-based channel estimation methods, which utilize least squares (LS) techniques. The method and system disclosed herein may be practiced in connection with a wide range of orthogonal frequency division multiplexing (OFDM) based systems, for example wireless local area networks (WLAN, for example IEEE 802.11 WLAN systems), and LTE systems.
摘要翻译：提出了使用最小均方误差（MMSE）技术的基于迭代离散傅里叶变换（DFT）的信道估计的方法和系统。该方法和系统的方面包括使用基于MMSE技术的迭代DFT方法计算时域和频域（或混合域）中的信道估计的过程。与使用最小二乘（LS）技术的传统的基于DFT的信道估计方法相比，该方法和系统的一个方面可以实现低计算复杂度并且在低信噪比（SNR）方案中产生更准确的信道估计值。本文公开的方法和系统可以结合宽范围的基于正交频分复用（OFDM）的系统，例如无线局域网（WLAN，例如IEEE 802.11 WLAN系统）和LTE系统来实施。

49. 发明授权

US08472543B2 Method and system for predicting channel quality index (CQI) values for maximum likelihood (ML) detection in a 2×2 multiple input multiple output (MIMO) wireless system 失效
标题翻译：用于在2×2多输入多输出（MIMO）无线系统中预测用于最大似然（ML）检测的信道质量指数（CQI）值的方法和系统
公开(公告)号：US08472543B2
公开(公告)日：2013-06-25
申请号：US12430286
申请日：2009-04-27
申请人： Sirikiat Ariyavisitakul , Eric Ojard , Jun Zheng
发明人： Sirikiat Ariyavisitakul , Eric Ojard , Jun Zheng
IPC分类号： H04L23/02
CPC分类号： H04L25/0204 , H04B7/0854 , H04B17/24 , H04B17/336 , H04B17/373 , H04L1/0009 , H04L1/0016 , H04L1/0025 , H04L1/0026 , H04L1/20 , H04L25/0228 , H04L25/0248 , H04L25/03343 , H04L25/067 , H04L27/2601 , H04L2025/03426 , H04L2025/03802
摘要： Aspects of a method and system for predicting CQI values for ML detection in a 2×2 MIMO system are presented. In one aspect of the system, a CQI value for a MIMO communication system may be computed based on a computed channel realization by reverse mapping the computed channel realization to a corresponding CQI value. Based on the computed CQI value, a coding rate may be selected. The coding rate may be selected from a lookup table, wherein the computed CQI value is utilized as an index to the lookup table. The reverse mapping may utilize a function, which is computed using radial basis function networks. In another aspect of the system, a joint mutual information value may be computed for the MIMO communication system. The joint mutual information value may be computed based on a Shannon mutual information value and a matched filter mutual information value.
摘要翻译：提出了一种用于在2×2 MIMO系统中预测ML检测的CQI值的方法和系统的方面。在该系统的一个方面，可以基于所计算的信道实现，通过将计算的信道实现反向映射到相应的CQI值来计算MIMO通信系统的CQI值。基于所计算的CQI值，可以选择编码率。编码率可以从查找表中选择，其中所计算的CQI值被用作查找表的索引。反向映射可以利用使用径向基函数网络来计算的函数。在系统的另一方面，可以为MIMO通信系统计算联合互信息值。可以基于香农互信息值和匹配滤波器互信息值来计算联合互信息值。

50. 发明申请

US20090268834A1 METHOD AND SYSTEM FOR PREDICTING CHANNEL QUALITY INDEX (CQI) VALUES FOR MAXIMUM LIKELIHOOD (ML) DETECTION IN A KXK MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) WIRELESS SYSTEM 审中-公开
标题翻译：用于在KXK多输入多输出（MIMO）无线系统中用于最大似然（ML）检测的信道质量指数（CQI）值的预测方法和系统
公开(公告)号：US20090268834A1
公开(公告)日：2009-10-29
申请号：US12430294
申请日：2009-04-27
申请人： Sirikiat Ariyavisitakul , Eric Ojard , Jun Zheng
发明人： Sirikiat Ariyavisitakul , Eric Ojard , Jun Zheng
IPC分类号： H04L5/12 , H04L27/06
CPC分类号： H04L25/0204 , H04B7/0854 , H04B17/373 , H04L1/0009 , H04L1/0025 , H04L1/0618 , H04L1/20 , H04L25/0248 , H04L25/03343 , H04L25/067 , H04L2025/03426 , H04L2025/03802
摘要： Aspects of a method and system for predicting CQI values for ML detection in a K×K MIMO system are presented. In one aspect of the system, a CQI value for a K×K MIMO communication system may be computed by decomposing the K×K MIMO system into a series of 2×2 MIMO systems. For each 2×2 MIMO system a CQI value may be computed by reverse mapping a PER computed for the 2×2 MIMO system and an SNR value for a SISO communication system. By summing CQI values among the series of 2×2 MIMO systems a CQI value for the K×K MIMO system may be computed. Based on the computed CQI value for the K×K MIMO system, a coding rate may be selected. The selected coding rate may be selected to maximize a computed information throughput rate at a MIMO receiver that utilizes ML detection.
摘要翻译：提出了一种用于预测KxK MIMO系统中ML检测的CQI值的方法和系统的方面。在该系统的一个方面，可以通过将KxK MIMO系统分解成一系列2x2MIMO系统来计算用于KxK MIMO通信系统的CQI值。对于每个2x2 MIMO系统，可以通过对针对2x2 MIMO系统计算的PER和SISO通信系统的SNR值进行反映射来计算CQI值。通过对2×2 MIMO系统的CQI值进行求和，可以计算K×K MIMO系统的CQI值。基于所计算的KxK MIMO系统的CQI值，可以选择编码率。可以选择所选择的编码率以使利用ML检测的MIMO接收机处的计算的信息吞吐率最大化。

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