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    Full search MIMO detector for recovering single or multiple data stream in a multiple antenna receiver
    21.
    发明授权
    Full search MIMO detector for recovering single or multiple data stream in a multiple antenna receiver 有权
    全搜索MIMO检测器，用于在多天线接收机中恢复单个或多个数据流

    公开(公告)号：US09059828B1

    公开(公告)日：2015-06-16

    申请号：US13897447

    申请日：2013-05-20

    申请人： Jose Marcelo Lima Duarte ,  Shue Lee Chang ,  Wee Peng Goh

    发明人： Jose Marcelo Lima Duarte ,  Shue Lee Chang ,  Wee Peng Goh

    IPC分类号： H04L27/06 ,  H04L1/00

    CPC分类号： H04L1/0054 ,  H04L1/06 ,  H04L25/03242 ,  H04L25/03318 ,  H04L25/03891 ,  H04L2025/03598

    摘要： This invention discloses an optimum form maximum likelihood MIMO detector (SFS ML Detector) that computes the LLR of the most likely received bit sequence from the received signal y, which consist of multiple signal stream from a MIMO channel H and an estimate of H. Through 5 simple steps of QR factorization, computation of partial Euclidean distance, sorting of the partial Euclidean distance, selection of surviving hypothesis by a set of algorithmic rule and computation of the full Euclidean distance of the survivors, and computation of the maximum likelihood from the surviving full Euclidean distance, the LLR of the received bit sequence can be obtained with a significantly lower number of computation and comparison than that is implied in the theoretical form of the maximum likelihood (ML) detector. There is no loss in performance of the SFS ML detector from the theoretical ML detector.

    摘要翻译： 本发明公开了一种最佳形式最大似然MIMO检测器（SFS ML检测器），其从接收信号y计算最可能接收的比特序列的LLR，其由来自MIMO信道H的多个信号流和H的估计组成。通过 QR分解的5个简单步骤，部分欧几里德距离的计算，部分欧几里德距离的排序，通过一组算法规则选择存活假设和计算幸存者的完整欧几里德距离，以及计算幸存者的最大似然 完全欧几里德距离，可以以比最大似然（ML）检测器的理论形式暗示的计算和比较数明显减少得到接收到的位序列的LLR。 来自理论ML检测器的SFS ML检测器的性能没有损失。

    Intercell interference mitigation
    23.
    发明授权
    Intercell interference mitigation 有权
    小区干扰减轻

    公开(公告)号：US08626072B2

    公开(公告)日：2014-01-07

    申请号：US13472040

    申请日：2012-05-15

    申请人： Hari Sankar ,  Ron Porat ,  Danjie Pan ,  Wee Peng Goh ,  Srikanth Gummadi ,  Lei Wang

    发明人： Hari Sankar ,  Ron Porat ,  Danjie Pan ,  Wee Peng Goh ,  Srikanth Gummadi ,  Lei Wang

    IPC分类号： H04B1/00

    CPC分类号： H04L5/0032 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0057 ,  H04L5/0062 ,  H04L5/0066 ,  H04L25/0204 ,  H04W72/0406 ,  H04W72/0453 ,  H04W72/048 ,  H04W72/082

    摘要： Methods and apparatus are described for mitigating intercell interference in wireless communication systems utilizing substantially the same operating frequency band across multiple neighboring coverage areas. The operating frequency band may be shared across multiple neighboring or otherwise adjacent cells, such as in a frequency reuse one configuration. The wireless communication system can synchronize one or more resource allocation regions or zones across the multiple base stations, and can coordinate a permutation type within each resource allocation zone. The base stations can coordinate a pilot configuration in each of a plurality of coordinated resource allocation regions. Subscriber stations can be assigned resources in a coordinated resource allocation region based on interference levels. A subscriber station can determine a channel estimate for each of multiple base stations in the coordinated resource allocation region to mitigate interference.

    摘要翻译： 描述了用于减轻跨越多个相邻覆盖区域的基本上相同的工作频带的无线通信系统中的小区间干扰的方法和装置。 操作频带可以在多个相邻或相邻的小区之间共享，例如在频率重用一个配置中。 无线通信系统可以跨多个基站同步一个或多个资源分配区域或区域，并且可以协调每个资源分配区域内的置换类型。 基站可以协调多个协调资源分配区域中的每一个中的导频配置。 可以基于干扰级别在协调的资源分配区域中为用户站分配资源。 订户站可以确定协调资源分配区域中的多个基站中的每个基站的信道估计以减轻干扰。