Method and system for using non-uniform channel quantization for a feedback-based communication system
    1.
    发明授权
    Method and system for using non-uniform channel quantization for a feedback-based communication system 有权
    用于基于反馈的通信系统使用非均匀信道量化的方法和系统

    公开(公告)号:US09356674B2

    公开(公告)日:2016-05-31

    申请号:US12652150

    申请日:2010-01-05

    摘要: A mobile device estimates channel state information (CSI) comprising, for example, CQI and/or SNR, for a downlink channel. The estimated CSI is non-uniformly quantized and transmitted to the base station over a finite-rate feedback channel. Different portions of the estimated CSI are quantized using different quantization step sizes, which are determined according to a performance metric function such as a channel capacity function of the estimated CSI. A quantization step size for a portion of the estimated CSI is increased if a low distribution probability is indicated by the portion of the estimated CSI. A quantization step size for a portion of the estimated CSI is decreased if a high distribution probability is indicated. The mobile device quantizes the estimated CSI using the determined quantization step sizes to transmit to the base station over the finite-rate feedback channel. Downlink data transmission is received according to the transmitted CSI.

    摘要翻译: 移动设备针对下行链路信道估计包括例如CQI和/或SNR的信道状态信息(CSI)。 估计的CSI被不均匀地量化,并通过有限速率反馈信道发送到基站。 使用不同的量化步长量化估计的CSI的不同部分,这些量化步长根据诸如估计的CSI的信道容量函数的性能度量功能来确定。 如果估计的CSI的部分指示低分布概率,则估计的CSI的一部分的量化步长增加。 如果指示高分配概率,则估计CSI的一部分的量化步长减小。 移动设备使用确定的量化步长量化估计的CSI,以便通过有限速率反馈信道向基站发送。 根据发送的CSI接收下行链路数据传输。

    Method and system for an alternating delta quantizer for limited feedback MIMO pre-coders
    2.
    发明授权
    Method and system for an alternating delta quantizer for limited feedback MIMO pre-coders 有权
    用于有限反馈MIMO预编码器的交替Δ量化器的方法和系统

    公开(公告)号:US08817899B2

    公开(公告)日:2014-08-26

    申请号:US13310872

    申请日:2011-12-05

    IPC分类号: H04L27/28

    摘要: Aspects of a method and system for an alternating delta quantizer for limited feedback MIMO pre-coders may comprise quantizing a change in channel state information in a MIMO pre-coding system onto at least a first and a second codebook, each of which comprises one or more unitary matrices, using a cost function; feeding back, in an alternating manner, an index to an element of at least the first codebook or the second codebook, associated with the quantizing, from a receiver to a transmitter in said MIMO pre-coding system, and generating the at least first and second codebook based on at least the channel state information. The channel state information may be a matrix V and the cost function 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: 用于有限反馈MIMO预编码器的交替式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改变量化到至少第一和第二码本上,每个码本包括一个或 更多的单位矩阵,使用成本函数; 以交替的方式,向所述MIMO预编码系统中的从接收机到发射机的与量化相关联的至少第一码本或第二码本的元素的索引进行反馈,并且生成至少第一和 至少基于信道状态信息的第二码本。 信道状态信息可以是矩阵V,并且成本函数可以由以下关系定义:f⁡(A)=(1NΣj = 1 Na jj her 2)其中A是大小的矩阵 N是N,aij是矩阵A的元素(i,j)。

    Method and system for codebook design for pre-coding techniques
    3.
    发明授权
    Method and system for codebook design for pre-coding techniques 有权
    用于预编码技术的码本设计方法和系统

    公开(公告)号:US08184732B2

    公开(公告)日:2012-05-22

    申请号:US12111299

    申请日:2008-04-29

    IPC分类号: H04B7/02

    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,每个码本可以包括可以具有相同矩阵等级的一个或多个码本元素。 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。

    Method and System for an Alternating Delta Quantizer for Limited Feedback MIMO Pre-Coders
    4.
    发明申请
    Method and System for an Alternating Delta Quantizer for Limited Feedback MIMO Pre-Coders 有权
    用于有限反馈MIMO预编码的交替Delta量化器的方法和系统

    公开(公告)号:US20120076223A1

    公开(公告)日:2012-03-29

    申请号:US13310872

    申请日:2011-12-05

    IPC分类号: H04K1/10

    摘要: Aspects of a method and system for an alternating delta quantizer for limited feedback MIMO pre-coders may comprise quantizing a change in channel state information in a MIMO pre-coding system onto at least a first and a second codebook, each of which comprises one or more unitary matrices, using a cost function; feeding back, in an alternating manner, an index to an element of at least the first codebook or the second codebook, associated with the quantizing, from a receiver to a transmitter in said MIMO pre-coding system, and generating the at least first and second codebook based on at least the channel state information. The channel state information may be a matrix V and the cost function 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: 用于有限反馈MIMO预编码器的交替式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改变量化到至少第一和第二码本上,每个码本包括一个或 更多的单位矩阵,使用成本函数; 以交替的方式,向所述MIMO预编码系统中的从接收机到发射机的与量化相关联的至少第一码本或第二码本的元素的索引进行反馈,并且生成至少第一和 至少基于信道状态信息的第二码本。 信道状态信息可以是矩阵V,并且可以通过以下关系来定义成本函数:f(A)=(1NΣΣ= 1 Na jj her 2)其中A是大小的矩阵 N是N,aij是矩阵A的元素(i,j)。

    Method and system for adaptive allocation of feedback resources for CQI and transmit pre-coding
    5.
    发明授权
    Method and system for adaptive allocation of feedback resources for CQI and transmit pre-coding 有权
    用于CQI的反馈资源的自适应分配和发送预编码的方法和系统

    公开(公告)号:US08086242B2

    公开(公告)日:2011-12-27

    申请号:US11864638

    申请日:2007-09-28

    IPC分类号: H04W72/00

    摘要: Aspects of a method and system for adaptive allocation of feedback resources for CQI and transmit pre-coding may include assigning a bandwidth and a feedback period to one or more CQI reporting units and a bandwidth and a feedback period to one or more PMI reporting units. One or more feedback messages may be generated based at least on channel state information associated with the bandwidth and the feedback period assigned to the one or more CQI reporting units and with the bandwidth and the feedback period assigned to the one or more PMI reporting units. The bandwidth and the feedback period of the CQI reporting units and/or the PMI reporting units may be adjusted dynamically and/or adaptively. Based on the channel state information or as a function of a feedback rate, the bandwidth and/or the feedback period may be assigned.

    摘要翻译: 用于CQI的反馈资源和发送预编码的自适应分配的方法和系统的方面可以包括将带宽和反馈周期分配给一个或多个CQI报告单元以及带宽和反馈周期到一个或多个PMI报告单元。 可以至少基于与分配给一个或多个CQI报告单元的带宽和反馈周期相关联的信道状态信息以及分配给一个或多个PMI报告单元的带宽和反馈周期来生成一个或多个反馈消息。 可以动态地和/或自适应地调整CQI报告单元和/或PMI报告单元的带宽和反馈周期。 基于信道状态信息或作为反馈速率的函数,可以分配带宽和/或反馈周期。

    Method and system for an efficient channel quantization method for MIMO pre-coding systems
    6.
    发明授权
    Method and system for an efficient channel quantization method for MIMO pre-coding systems 有权
    用于MIMO预编码系统的有效信道量化方法的方法和系统

    公开(公告)号:US08085833B2

    公开(公告)日:2011-12-27

    申请号:US13091903

    申请日:2011-04-21

    IPC分类号: H04L27/30

    摘要: A method and system for processing communication signals is provided and may comprise, minimizing a cost function in a MIMO pre-coding system by choosing a smallest scalar cost from a plurality of scalar costs, wherein each one of the scalar costs is generated from one or more sums and one or more products of elements of a product matrix, and wherein the product matrix is generated from one of the plurality of unitary matrices, a matrix comprising the channel estimate, and their respective Hermitian Transposes. The codebook is selected based on the minimized cost function. The channel estimate is quantized onto the selected codebook.

    摘要翻译: 提供了一种用于处理通信信号的方法和系统,并且可以包括通过从多个标量成本中选择最小标量成本来最小化MIMO预编码系统中的成本函数,其中每个标量成本是从一个或 更多的和和产品矩阵的元素的一个或多个乘积,并且其中,产品矩阵从多个单一矩阵中的一个生成,包括信道估计的矩阵以及它们各自的厄米转移。 基于最小化成本函数选择码本。 信道估计量被量化到选定的码本上。

    METHOD AND SYSTEM FOR BEST-M CQI FEEDBACK TOGETHER WITH PMI FEEDBACK
    7.
    发明申请
    METHOD AND SYSTEM FOR BEST-M CQI FEEDBACK TOGETHER WITH PMI FEEDBACK 有权
    具有PMI反馈的最佳M CQI反馈的方法和系统

    公开(公告)号:US20080268862A1

    公开(公告)日:2008-10-30

    申请号:US11864661

    申请日:2007-09-28

    IPC分类号: H04Q7/20

    摘要: Aspects of a method and system for best-M CQI feedback together with PMI feedback may include generating a plurality of feedback messages, which may be communicated from a mobile station to a base station, wherein at least one of the generated plurality of feedback messages may be associated with each corresponding selected one of a plurality of Channel Quality Indicator (CQI) reporting units. The at least one of the generated feedback messages may comprise CQI information and Pre-coding Matrix Index (PMI) information, which may both be associated with the selected one of the plurality of CQI reporting units. At least one other of the generated plurality of feedback messages may comprise an aggregate CQI information, which is based on one or more of the plurality of CQI reporting units.

    摘要翻译: 用于最佳M CQI反馈的方法和系统以及PMI反馈的方面可以包括生成可以从移动台传送到基站的多个反馈消息,其中所生成的多个反馈消息中的至少一个可以 与多个信道质量指示符(CQI)报告单元中的每个相应选择的一个相关联。 所生成的反馈消息中的至少一个可以包括CQI信息和预编码矩阵索引(PMI)信息,其可以都与多个CQI报告单元中的所选择的一个相关联。 所生成的多个反馈消息中的至少另一个可以包括基于多个CQI报告单元中的一个或多个的聚合CQI信息。

    Method and system for rate reduction pre-coding matrices
    8.
    发明授权
    Method and system for rate reduction pre-coding matrices 有权
    速率降低预编码矩阵的方法和系统

    公开(公告)号:US08687715B2

    公开(公告)日:2014-04-01

    申请号:US11847683

    申请日:2007-08-30

    IPC分类号: H04L27/28

    摘要: Aspects of a method and system for a delta quantizer for rate reduction pre-coding matrices may include quantizing a change in channel state information in a MIMO pre-coding system onto a codebook and generating a pre-coding matrix based on at least the channel state information. The channel state information may be a matrix V and one or more associated singular values. The matrix V may be generated using Singular Value Decomposition (SVD) or Geometric Mean Decomposition (GMD). One or more columns of the matrix V may be selected based on the one or more associated singular values and may be combined to enable the generation of the pre-coding matrix. The codebook may comprise one or more unitary matrices. An index of an element of the codebook, onto which the change in channel state information is quantized, may be transmitted from a receiver to a transmitter.

    摘要翻译: 用于速率降低预编码矩阵的delta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码本上,并且至少基于信道状态生成预编码矩阵 信息。 信道状态信息可以是矩阵V和一个或多个相关联的奇异值。 矩阵V可以使用奇异值分解(SVD)或几何平均分解(GMD)来生成。 可以基于一个或多个相关联的奇异值来选择矩阵V的一个或多个列,并且可以组合以使得能够生成预编码矩阵。 码本可以包括一个或多个酉矩阵。 信道状态信息的变化被量化的码本的元素的索引可以从接收器发送到发送器。

    Method and system for codebook design of MIMO pre-coders with finite rate channel state information feedback
    9.
    发明授权
    Method and system for codebook design of MIMO pre-coders with finite rate channel state information feedback 有权
    具有有限速率信道状态信息反馈的MIMO预编码器码本设计方法和系统

    公开(公告)号:US08472506B2

    公开(公告)日:2013-06-25

    申请号:US13185787

    申请日:2011-07-19

    IPC分类号: H04L27/30

    摘要: Channel state information in a multiple-input multiple-output (MIMO) pre-coding system is quantized onto a codebook, which comprises one or more unitary matrices, using a cost function. Voronoi regions are computed from the codebook. The codebook may be updated based on the computed Voronoi regions. 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: 多输入多输出(MIMO)预编码系统中的信道状态信息使用成本函数量化到包括一个或多个酉矩阵的码本上。 Voronoi区域是从码本计算的。 可以基于所计算的Voronoi区域来更新码本。 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a jj钟2)其中A是 尺寸N乘N的矩阵,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诺维域。 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。

    Method and system for a delta quantizer for MIMO pre-coders with finite rate channel state information feedback
    10.
    发明授权
    Method and system for a delta quantizer for MIMO pre-coders with finite rate channel state information feedback 有权
    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:US08411728B2

    公开(公告)日:2013-04-02

    申请号:US13031768

    申请日:2011-02-22

    IPC分类号: H04B1/00

    摘要: A MIMO pre-coding 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MIMO预编码系统可以包括将MIMO预编码系统中的信道状态信息的改变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。