OPEN LOOP MU-MIMO
    1.
    发明申请
    OPEN LOOP MU-MIMO 有权
    开环MU-MIMO

    公开(公告)号:US20090041148A1

    公开(公告)日:2009-02-12

    申请号:US11864932

    申请日:2007-09-29

    IPC分类号: H04L1/02

    摘要: A unified open loop single-user/multiple-user multiple-input-multiple-output (MIMO) system and method are disclosed. The system and method operate without use of channel state information feedback. Instead, the method utilizes channel quality indicator feedback to schedule users to spatial resource blocks. Both symmetric multi-user MIMO schemes (like 2×2 and 4×4) and asymmetric multi-user MIMO schemes are considered. CQI feedback and reduction proposals are also introduced. The method may be used in a proposed network topology.

    摘要翻译: 公开了一种统一的开环单用户/多用户多输入多输出(MIMO)系统和方法。 系统和方法操作而不使用信道状态信息反馈。 相反,该方法利用信道质量指示符反馈来将用户调度到空间资源块。 考虑了对称多用户MIMO方案(如2x2和4x4)和非对称多用户MIMO方案。 还引入了CQI反馈和减少建议。 该方法可以用于所提出的网络拓扑中。

    Open loop MU-MIMO
    2.
    发明授权
    Open loop MU-MIMO 有权
    开环MU-MIMO

    公开(公告)号:US07907677B2

    公开(公告)日:2011-03-15

    申请号:US11864932

    申请日:2007-09-29

    IPC分类号: H04B7/02

    摘要: A unified open loop single-user/multiple-user multiple-input-multiple-output (MIMO) system and method are disclosed. The system and method operate without use of channel state information feedback. Instead, the method utilizes channel quality indicator feedback to schedule users to spatial resource blocks. Both symmetric multi-user MIMO schemes (like 2×2 and 4×4) and asymmetric multi-user MIMO schemes are considered. CQI feedback and reduction proposals are also introduced. The method may be used in a proposed network topology.

    摘要翻译: 公开了一种统一的开环单用户/多用户多输入多输出(MIMO)系统和方法。 系统和方法操作而不使用信道状态信息反馈。 相反,该方法利用信道质量指示符反馈来将用户调度到空间资源块。 考虑了对称多用户MIMO方案(如2×2和4×4)和非对称多用户MIMO方案。 还引入了CQI反馈和减少建议。 该方法可以用于所提出的网络拓扑中。

    UPLINK NOISE ESTIMATION FOR VIRTUAL MIMO
    7.
    发明申请
    UPLINK NOISE ESTIMATION FOR VIRTUAL MIMO 有权
    虚拟MIMO的上行噪声估计

    公开(公告)号:US20140064391A1

    公开(公告)日:2014-03-06

    申请号:US13878708

    申请日:2010-10-11

    IPC分类号: H04L25/03

    摘要: A system and methods for estimating a noise power level in an uplink signal for a virtual MIMO system is disclosed. The system comprises a demodulation reference signal (DMRS) module configured to obtain a DMRS receive symbol from the uplink signal and determine a DMRS sequence for a first UE in the virtual MIMO system. An autocorrelation module is configured to calculate an average autocorrelation value for the subcarriers in the uplink signal. A cross-correlation module is configured to calculate first and second cross-correlation values of the uplink signal Rz (l) for values of l selected such that the sum of the received power from the first UE and the second UE can be accurately estimated. A noise power level module is configured to determine the noise power level for the uplink signal using the average autocorrelation value and the first and second cross correlation values.

    摘要翻译: 公开了一种用于估计虚拟MIMO系统的上行链路信号中的噪声功率电平的系统和方法。 该系统包括解调参考信号(DMRS)模块,其被配置为从上行链路信号获得DMRS接收符号,并确定虚拟MIMO系统中的第一UE的DMRS序列。 自相关模块被配置为计算上行链路信号中的子载波的平均自相关值。 互相关模块被配置为针对所选择的l的值计算上行链路信号Rz(1)的第一和第二互相关值,使得可以准确地估计来自第一UE和第二UE的接收功率之和。 噪声功率电平模块被配置为使用平均自相关值和第一和第二互相关值来确定上行链路信号的噪声功率电平。

    Uplink noise estimation for virtual MIMO
    8.
    发明授权
    Uplink noise estimation for virtual MIMO 有权
    用于虚拟MIMO的上行链路噪声估计

    公开(公告)号:US09008207B2

    公开(公告)日:2015-04-14

    申请号:US13878708

    申请日:2010-10-11

    摘要: A system and methods for estimating a noise power level in an uplink signal for a virtual MIMO system is disclosed. The system comprises a demodulation reference signal (DMRS) module configured to obtain a DMRS receive symbol from the uplink signal and determine a DMRS sequence for a first UE in the virtual MIMO system. An autocorrelation module is configured to calculate an average autocorrelation value for the subcarriers in the uplink signal. A cross-correlation module is configured to calculate first and second cross-correlation values of the uplink signal RZ(l) for values of l selected such that the sum of the received power from the first UE and the second UE can be accurately estimated. A noise power level module is configured to determine the noise power level for the uplink signal using the average autocorrelation value and the first and second cross correlation values.

    摘要翻译: 公开了一种用于估计虚拟MIMO系统的上行链路信号中的噪声功率电平的系统和方法。 该系统包括解调参考信号(DMRS)模块,其被配置为从上行链路信号获得DMRS接收符号,并确定虚拟MIMO系统中的第一UE的DMRS序列。 自相关模块被配置为计算上行链路信号中的子载波的平均自相关值。 互相关模块被配置为针对所选择的l的值计算上行链路信号RZ(1)的第一和第二互相关值,使得可以准确地估计来自第一UE和第二UE的接收功率之和。 噪声功率电平模块被配置为使用平均自相关值和第一和第二互相关值来确定上行链路信号的噪声功率电平。