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    • 75. 发明授权
    • Double search algorithm of user group selection for multiuser MIMO downlink transmission
    • 用户组选择双用户MIMO下行链路传输的双重搜索算法
    • US08121567B2
    • 2012-02-21
    • US13037611
    • 2011-03-01
    • Jun ZhengChengjin ZhangSeverine Catreux-ErcegVinko ErcegPieter RouxPieter van Rooyen
    • Jun ZhengChengjin ZhangSeverine Catreux-ErcegVinko ErcegPieter RouxPieter van Rooyen
    • H04B1/18
    • H04B7/0697H04B7/0452H04B7/0626
    • A method and system for a double search algorithm of user group selection for multiuser MIMO downlink transmission are provided. The use of optimal brute-force user group selection may require high computational expense. A first search operation may be based on a first user having a channel gain greater than that of other users, while a second search operation may be based on a second user having a channel gain greater than that of the remaining users. A maximized system capacity may be determined based on the maximized system capacities determined in the first and second search loop. A receiver pair associated with the maximized system capacity may be selected as the user group. The double search algorithm may reduce the computational complexity while achieving performances that may exceed the TDMA scheme and be similar to that of systems with ideal CSI at the transmitter.
    • 提供了一种用于多用户MIMO下行链路传输的用户组选择双重搜索算法的方法和系统。 使用最佳暴力用户组选择可能需要较高的计算费用。 第一搜索操作可以基于具有大于其他用户的信道增益的信道增益的第一用户,而第二搜索操作可以基于具有大于剩余用户的信道增益的信道增益的第二用户。 可以基于在第一和第二搜索循环中确定的最大化的系统容量来确定最大化的系统容量。 可以选择与最大系统容量相关联的接收机对作为用户组。 双重搜索算法可以降低计算复杂度,同时实现可能超过TDMA方案的性能,并且类似于在发射机处具有理想CSI的系统的性能。
    • 76. 发明申请
    • Method and System for Single Weight (SW) Antenna System for Single Channel (SC) MIMO
    • 用于单通道(SC)MIMO的单重(SW)天线系统的方法和系统
    • US20110280237A1
    • 2011-11-17
    • US13190085
    • 2011-07-25
    • Mark KentVinko ErcegUri LandauPieter van Rooyen
    • Mark KentVinko ErcegUri LandauPieter van Rooyen
    • H04B7/216
    • H04B7/0615
    • Methods and systems for processing signals in a receiver are disclosed herein and may comprise receiving WCDMA signals via M receive antennas, tracking a plurality of received clusters within the received WCDMA signals, and estimating a complex phase and amplitude of a portion of each of the received clusters. A single cluster may comprise an aggregate of received WCDMA signal paths and (M−1) phase shifters may be utilized for the estimating of the complex phase. Complex waveforms, comprising in-phase (I) and quadrature (Q) components for the received clusters within the received WCDMA signals, may be processed. The processed complex waveforms comprising the in-phase and quadrature components may be filtered to a WCDMA baseband bandwidth. A phase and/or amplitude for at least one of the received WCDMA signals may be adjusted utilizing the estimated complex phase and amplitude. The phase and/or amplitude may be adjusted continuously and/or at discrete intervals.
    • 在本文中公开了用于处理接收机中的信号的方法和系统,并且可以包括经由M个接收天线接收WCDMA信号,跟踪所接收的WCDMA信号内的多个接收到的簇,以及估计接收到的每个的一部分的复相位和振幅 集群。 单个群集可以包括接收到的WCDMA信号路径的聚合,并且可以使用(M-1)移相器来估计复数相位。 可以处理包括接收到的WCDMA信号内接收到的簇的同相(I)和正交(Q)分量的复杂波形。 包括同相和正交分量的经处理的复合波形可以被滤波到WCDMA基带带宽。 可以使用估计的复相位和幅度来调整所接收的WCDMA信号中的至少一个的相位和/或幅度。 可以连续地和/或以离散的间隔调整相位和/或振幅。
    • 80. 发明授权
    • Method and system for channel estimation in a spatial multiplexing MIMO system
    • 空间复用MIMO系统中信道估计的方法和系统
    • US07995537B2
    • 2011-08-09
    • US12427206
    • 2009-04-21
    • Mark KentVinko ErcegUri M LandauPieter van Rooyen
    • Mark KentVinko ErcegUri M LandauPieter van Rooyen
    • H04Q7/00
    • H04L25/0204H04L25/0242
    • Aspects of a method and system for channel estimation in a SM MIMO communication system may comprise receiving a plurality of spatially multiplexed communication signals from a plurality of transmit antennas. A plurality of baseband combined channel estimates based on phase rotation may be generated in response to the received plurality of spatially multiplexed communication signals. An estimate of the channel matrix may be determined based on the baseband combined channel estimates. A plurality of amplitude and phase correction signals may be generated in response to receiving the estimate of the channel matrix. An amplitude and a phase of at least a portion of the received plurality of spatially multiplexed communication signals may be adjusted based on the generated plurality of amplitude and phase correction signals, respectively.
    • 用于SM MIMO通信系统中的信道估计的方法和系统的方面可以包括从多个发射天线接收多个空间复用的通信信号。 可以响应于所接收的多个空间复用的通信信号来生成基于相位旋转的多个基带组合信道估计。 可以基于基带组合信道估计来确定信道矩阵的估计。 响应于接收到信道矩阵的估计,可以产生多个幅度和相位校正信号。 可以基于所生成的多个幅度和相位校正信号来调整所接收的多个空间多路复用的通信信号的至少一部分的振幅和相位。