公开(公告)号：US08767863B1

公开(公告)日：2014-07-01

申请号：US13932862

申请日：2013-07-01

Applicant: Marvell International Ltd.

Inventor： Arul Durai Murugan Palanivelu ,  Hui-Ling Lou ,  Kedar Shirali ,  Rohit U. Nabar ,  Atul Salhotra

IPC: H04B7/02 ,  H04B1/40

CPC classification number: H04B7/0678 ,  H04L1/06

Abstract: A transceiver utilizes a spatial spreading matrix to distribute two or more encoded spatial data streams to multiple antennas. The spatial spreading matrix satisfies one or more of the following two constraints: (a) the ratio of squared norms of the sum of the components of a row, for different rows of the spatial spreading matrix, is equal to a first constant sequence, and (b) the ratio of squared norms of the sum of a symbol Sl to be transmitted, when the symbol Sl is equal to 1 or −1, multiplied by each of the components of a row, for different rows of the spatial spreading matrix, is equal to a second constant sequence.

Abstract translation: 收发器利用空间扩展矩阵将两个或多个编码空间数据流分配到多个天线。 空间扩展矩阵满足以下两个约束中的一个或多个：（a）对于空间扩展矩阵的不同行，行的分量之和的平方的比率等于第一常数序列，并且 （b）对于空间扩展矩阵的不同行，当符号S1等于1或-1时，要发送的符号S1的和的平方范数与行的每个分量相乘， 等于第二个常数序列。

公开(公告)号：US08611476B1

公开(公告)日：2013-12-17

申请号：US13706164

申请日：2012-12-05

Applicant: Marvell International Ltd.

Inventor： Rohit U. Nabar ,  Kedar Shirali

IPC: H04L27/06

CPC classification number: H04L25/0206 ,  H04L25/022 ,  H04L25/0224

Abstract: A method and apparatus for estimating a frequency response of a channel. The method includes adjusting phase components of estimates of the frequency response to provide phase-adjusted estimates; performing a smoothing operation on the phase-adjusted estimates to provide smoothed phase-adjusted estimates; and generating an output of a reverse phase adjustment, wherein the reverse phase adjustment is performed on the smoothed phase-adjusted estimates.

Abstract translation: 一种用于估计频道的频率响应的方法和装置。 该方法包括调整频率响应的估计的相位分量以提供相位调整的估计; 对经过调整后的估计进行平滑运算，以提供平滑的相位调整估计; 并产生反向相位调整的输出，其中对平滑的相位调整的估计执行反向相位调整。