公开(公告)号：US20090190683A1

公开(公告)日：2009-07-30

申请号：US12367971

申请日：2009-02-09

申请人： Geert A. Awater ,  Brian Wong

发明人： Geert A. Awater ,  Brian Wong

IPC分类号： H04L5/12 ,  H04L27/06

CPC分类号： H04L25/0246 ,  H04B7/0413 ,  H04B7/0851 ,  H04B7/0854 ,  H04L1/06 ,  H04L2025/03426

摘要： A MIMO receiver is provided with a preprocessor for performing QR decomposition of a channel matrix H wherein the factored reduced matrix R is used in place of H and Q*y is used in place of the received vector y in a maximum likelihood detector (“MLD”). The maximum likelihood detector might be a hard-decision MLD or a soft-decision MLD. A savings of computational complexity can be used to provide comparable results more quickly, using less circuitry, and/or requiring less consumed energy, or performance can be improved for a fixed amount of time, circuitry and/or energy. Where the MLD uses approximations, such as finite resolution calculations (fixed point or the like) or L1 Norm approximations, the reduced number of operations resulting from using the reduced matrix results in improved approximations as a result of the finite resolution operations. Other methods of reducing the channel matrix might be used for suitable and/or cumulative advantages.

摘要翻译： MIMO接收机设置有用于执行信道矩阵H的QR分解的预处理器，其中使用因子减小矩阵R代替H，并且使用Q * y代替最大似然检测器（“MLD”）中的接收向量y “）。 最大似然检测器可能是硬判决MLD或软判决MLD。 可以使用较少的电路和/或需要更少的消耗的能量来节省更多的计算复杂度来提供可比较的结果，或者可以在固定的时间，电路和/或能量的情况下提高性能。 在MLD使用近似值（例如有限分辨率计算（固定点等）或L1 Norm近似）的情况下，由于使用简化矩阵导致的减少的操作数导致由于有限分辨率操作而导致的改进的近似。 降低通道矩阵的其他方法可用于合适和/或累积的优点。

公开(公告)号：US07489746B1

公开(公告)日：2009-02-10

申请号：US11112068

申请日：2005-04-22

申请人： Geert A. Awater ,  Brian Wong

发明人： Geert A. Awater ,  Brian Wong

IPC分类号： H03D1/00 ,  H04L27/06

CPC分类号： H04L25/0246 ,  H04B7/0413 ,  H04B7/0851 ,  H04B7/0854 ,  H04L1/06 ,  H04L2025/03426

摘要： A MIMO receiver is provided with a preprocessor for performing QR decomposition of a channel matrix H wherein the factored reduced matrix R is used in place of H and Q*y is used in place of the received vector y in a maximum likelihood detector (“MLD”). The maximum likelihood detector might be a hard-decision MLD or a soft-decision MLD. A savings of computational complexity can be used to provide comparable results more quickly, using less circuitry, and/or requiring less consumed energy, or performance can be improved for a fixed amount of time, circuitry and/or energy. Where the MLD uses approximations, such as finite resolution calculations (fixed point or the like) or L1 Norm approximations, the reduced number of operations resulting from using the reduced matrix results in improved approximations as a result of the finite resolution operations. Other methods of reducing the channel matrix might be used for suitable and/or cumulative advantages.

摘要翻译： MIMO接收机设置有用于执行信道矩阵H的QR分解的预处理器，其中使用因子减小矩阵R代替H，并且使用Q * y代替最大似然检测器（“MLD”）中的接收向量y “）。 最大似然检测器可能是硬判决MLD或软判决MLD。 可以使用较少的电路和/或需要更少的消耗的能量来节省更多的计算复杂度来提供可比较的结果，或者可以在固定的时间，电路和/或能量的情况下提高性能。 在MLD使用近似值（例如有限分辨率计算（固定点等）或L1 Norm近似）的情况下，由于使用简化矩阵导致的减少的操作数导致由于有限分辨率操作而导致的改进的近似。 降低通道矩阵的其他方法可用于合适和/或累积的优点。

公开(公告)号：US5390176A

公开(公告)日：1995-02-14

申请号：US126146

申请日：1993-09-23

申请人： Frederik C. Schoute ,  Geert A. Awater

发明人： Frederik C. Schoute ,  Geert A. Awater

IPC分类号： H04Q3/52 ,  H03K17/00 ,  H04L12/54 ,  H04L12/70 ,  H04L12/933 ,  H04Q11/04 ,  H04L12/56

CPC分类号： H04L12/5601 ,  H04L49/108 ,  H04L2012/5647 ,  H04L2012/5649 ,  H04L2012/5651 ,  H04L2012/5679 ,  H04L2012/5681 ,  H04L2012/5682

摘要： An ATM switching arrangement in which two types of cells are distinguished. A first type of cells is marked as low loss cells and a second type of cells is marked as low delay cells. In the switching arrangement a cell buffer (9) is subdivided into a first memory area (LL) for the low loss cells and a second area (LD) for the low delay cells. In the case of the cell buffer (9) being completely filled, low loss cells get read-in priority over low delay cells. In reading out from the cell buffer low delay cells take priority over low loss cells, unless the low delay area is empty. It is also possible to set a threshold value for the content of the low loss area; when the content of the low loss area exceeds the threshold value outputting of the low loss cells can then be started.

摘要翻译： 一种区分两种类型的小区的ATM交换装置。 第一类细胞被标记为低损耗细胞，第二类细胞标记为低延迟细胞。 在切换装置中，单元缓冲器（9）被细分为用于低损耗单元的第一存储区（LL）和低延迟单元的第二区（LD）。 在单元缓冲器（9）被完全填充的情况下，低损耗单元在低延迟单元上被优先读取。 在从单元缓冲器中读出低延迟单元优先于低损耗单元，除非低延迟区域为空。 也可以设定低损耗区域的内容的阈值; 当低损耗区域的内容超过阈值时，可以开始输出低损耗单元。