METHOD AND APPARATUS FOR DOWNLINK TRANSMISSION BASED ON MIMO PRECODING IN WIRELESS COMMUNICATION SYSTEM EMPLOYING DISTRIBUTED ANTENNA SYSTEMS
    1.
    发明申请
    METHOD AND APPARATUS FOR DOWNLINK TRANSMISSION BASED ON MIMO PRECODING IN WIRELESS COMMUNICATION SYSTEM EMPLOYING DISTRIBUTED ANTENNA SYSTEMS 有权
    基于分布式天线系统的无线通信系统中基于MIMO预测的下行链路传输的方法和装置

    公开(公告)号:US20120207145A1

    公开(公告)日:2012-08-16

    申请号:US13371935

    申请日:2012-02-13

    IPC分类号: H04B7/216 H04W8/00

    摘要: A transmission method and apparatus utilizing Multiple-Input and Multiple-Output (MIMO) precoding based on Distributed Antenna Systems (DASs) are provided. The transmission method includes determining active antenna ports, for a User Equipment (UE) having multiple receive antennas, from among a plurality of Distributed Antenna Ports (DAPs) evenly placed in a service area; assigning a Multiple-Input and Multiple-Output (MIMO) mode to the UE and notifying the UE of the MIMO mode assignment; determining a signal precoding vector on a basis of feedback information for the MIMO mode received from the UE; and precoding a signal using the signal precoding vector and transmitting the precoded signal through the active antenna ports.

    摘要翻译: 提供了一种利用基于分布式天线系统(DAS)的多输入多输出(MIMO)预编码的传输方法和装置。 传输方法包括从均匀放置在服务区域中的多个分布式天线端口(DAP)中确定用于具有多个接收天线的用户设备(UE)的有源天线端口; 向所述UE分配多输入多输出(MIMO)模式,并向所述UE通知所述MIMO模式分配; 基于从UE接收的MIMO模式的反馈信息,确定信号预编码矢量; 并使用信号预编码矢量对信号进行预编码,并通过有源天线端口发送预编码信号。

    WIRELESS COMMUNICATION METHOD AND APPARATUS USING ADAPTIVE TRANSMISSION POLARIZATION CONTROL
    3.
    发明申请
    WIRELESS COMMUNICATION METHOD AND APPARATUS USING ADAPTIVE TRANSMISSION POLARIZATION CONTROL 有权
    无线通信方法和使用自适应传输极化控制的设备

    公开(公告)号:US20130003789A1

    公开(公告)日:2013-01-03

    申请号:US13534431

    申请日:2012-06-27

    IPC分类号: H04B7/00 H04B1/38 H04B17/00

    摘要: A wireless communication method and apparatus using adaptive transmission polarization control are provided. The wireless communication apparatus includes an orthogonal polarization antenna, a channel state estimator, and a transmission polarization state (TPS) selector. The orthogonal polarization antenna receives at least one reference signal. The channel state estimator estimates a wireless polarization channel on the basis of the reference signal. The TPS selector selects a TPS corresponding to the estimated wireless polarization channel from among a plurality of predefined TPSs, and feeds back the selected TPS information. Accordingly, the wireless communication apparatus feeds back information for polarization control using minimum uplink wireless resources, and maximizes a transmission capacity on the basis of the feedback information.

    摘要翻译: 提供了使用自适应透射偏振控制的无线通信方法和装置。 无线通信装置包括正交极化天线,信道状态估计器和透射偏振状态(TPS)选择器。 正交极化天线接收至少一个参考信号。 信道状态估计器基于参考信号来估计无线极化信道。 TPS选择器从多个预定义的TPS中选择与估计的无线极化信道相对应的TPS,并且反馈所选择的TPS信息。 因此,无线通信装置使用最小上行链路无线资源反馈用于偏振控制的信息,并且基于反馈信息使传输容量最大化。