利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

202 条记录 (耗时 0.032 秒)

    Beam and power allocation method for MIMO communication system
    1.
    发明申请
    Beam and power allocation method for MIMO communication system 审中-公开
    MIMO通信系统的波束和功率分配方法

    公开(公告)号：US20060098754A1

    公开(公告)日：2006-05-11

    申请号：US11256251

    申请日：2005-10-21

    申请人： Sung-Jin Kim ,  Ye-Hoon Lee ,  Ho-Jin Kim ,  Kwang-Bok Lee

    发明人： Sung-Jin Kim ,  Ye-Hoon Lee ,  Ho-Jin Kim ,  Kwang-Bok Lee

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0617 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0443 ,  H04B7/0626 ,  H04B7/0691 ,  H04W52/42

    摘要： A beam and power allocation method for a MIMO system transmitting multiple data streams from a transmitter having a plurality of transmit antennas to a receiver having at least two receive antennas, the transmit antennas being grouped based on feedback information from the receiver, includes obtaining covariance matrices for respective transmit antenna group, and allocating beam and power to the transmit antenna groups according to the covariance matrices of the respective antenna groups. The power allocation method can be adapted to various partial beamforming techniques by generalizing the optimization problem as a function of transmit covariance matrices.

    摘要翻译： 一种用于MIMO系统的波束和功率分配方法，所述MIMO系统从具有多个发射天线的发射机向具有至少两个接收天线的接收机发射多个数据流，所述发射天线基于来自所述接收机的反馈信息分组，包括获得协方差矩阵 并且根据各个天线组的协方差矩阵将波束和功率分配给发射天线组。 功率分配方法可以通过将优化问题概括为发射协方差矩阵的函数来适应各种部分波束成形技术。

    User scheduling method for multiuser MIMO communication system
    3.
    发明申请
    User scheduling method for multiuser MIMO communication system 审中-公开
    多用户MIMO通信系统的用户调度方法

    公开(公告)号：US20060209764A1

    公开(公告)日：2006-09-21

    申请号：US11368746

    申请日：2006-03-06

    申请人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

    发明人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

    IPC分类号： H04Q7/00

    CPC分类号： H04W72/1231 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0689 ,  H04L1/0003 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/0675

    摘要： In multiuser Multiple-Input Multiple-Output (MIMO) systems in which a base station performs scheduling on the basis of channel information fed back from a plurality of terminals, the user scheduling method of the present invention includes calculating a metric for scheduling the users using the channel information, selecting one of at least two preinstalled scheduling schemes according to the metric, and performing the scheduling with the selected scheduling scheme. The user scheduling method of the present invention performs scheduling with one of TDMA- and STMA-based scheduling schemes which show maximum capacity in different channel environments, such that the system capacity can be optimally maintained even when the channel environment is changed.

    摘要翻译： 在多用户多输入多输出（MIMO）系统中，基站基于从多个终端反馈的信道信息进行调度，本发明的用户调度方法包括：计算用于使用 所述信道信息，根据所述度量选择至少两个预先安排的调度方案中的一个，并且使用所选择的调度方案来执行所述调度。 本发明的用户调度方法利用在不同信道环境中显示最大容量的基于TDMA和STMA的调度方案之一进行调度，使得即使当信道环境改变时也可以最佳地维护系统容量。

    Beam and power allocation method for MIMO communication system
    4.
    发明授权
    Beam and power allocation method for MIMO communication system 有权
    MIMO通信系统的波束和功率分配方法

    公开(公告)号：US07587172B2

    公开(公告)日：2009-09-08

    申请号：US11368726

    申请日：2006-03-06

    申请人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee ,  Jianjun Li

    发明人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee ,  Jianjun Li

    IPC分类号： H04B1/00 ,  H04B15/00

    CPC分类号： H04B7/0452 ,  H04B7/0465 ,  H04B7/061 ,  H04B7/0634 ,  H04B7/0639 ,  H04L1/0003 ,  H04L1/0675

    摘要： The present invention provides the multiuser Multiple-Input Multiple-Output (MIMO) systems with a feedback method which includes measuring, at the terminal, received Signal to Noise Ratios (SNRs) for all transmit antennas, selecting one of precoding matrixes, which has best SNRs, retrieving an index mapped to the selected preceding matrix from a predetermined mapping table, and transmitting the index with the SNRs of the selected precoding matrix. In the present invention, it is possible to reduce feedback information amount without degradation of the sum rate performance of the system since the feedback information is transmitted in a form of index implying appropriate precoding matrix and corresponding SNRs.

    摘要翻译： 本发明提供了具有反馈方法的多用户多输入多输出（MIMO）系统，其包括在终端处测量所有发射天线的接收信噪比（SNR），选择最佳的预编码矩阵之一 SNR，从预定的映射表检索映射到所选择的先前矩阵的索引，以及使用所选择的预编码矩阵的SNR发送索引。 在本发明中，由于反馈信息以表示适当的预编码矩阵和对应的SNR的索引形式发送，所以可以减少反馈信息量而不降低系统的总和速率性能。

    Apparatus and method for beamforming in a multi-antenna system
    6.
    发明申请
    Apparatus and method for beamforming in a multi-antenna system 有权
    多天线系统中波束成形的装置和方法

    公开(公告)号：US20060039494A1

    公开(公告)日：2006-02-23

    申请号：US11180264

    申请日：2005-07-13

    申请人： Ho-Jin Kim ,  Ju-Ho Lee ,  Kwang-Bok Lee ,  Hyoung-Woon Park ,  Ho Yang ,  Pandharipande Ashish ,  Sung-Jin Kim

    发明人： Ho-Jin Kim ,  Ju-Ho Lee ,  Kwang-Bok Lee ,  Hyoung-Woon Park ,  Ho Yang ,  Pandharipande Ashish ,  Sung-Jin Kim

    IPC分类号： H04L1/02

    CPC分类号： H04B7/0617 ,  H04B7/061 ,  H04B7/0691 ,  H04L1/0003 ,  H04L1/0009 ,  H04W52/262

    摘要： An apparatus and method for performing beamforming for transmitting a plurality of bit streams output through Adaptive Modulation and Coding (AMC) via a plurality of transmission antennas in a base station using a multi-antenna scheme. The apparatus and method include classifying the plurality of transmission antennas into a plurality of transmission antenna groups; selecting one of the transmission antenna groups depending on a group selection signal being fed back from a mobile station; and outputting each of the bit streams to its associated transmission antenna among the transmission antennas constituting the selected transmission antenna group.

    摘要翻译： 一种用于执行波束成形的装置和方法，用于通过使用多天线方案的基站中的多个发送天线发送通过自适应调制和编码（AMC）输出的多个比特流。 该装置和方法包括将多个发射天线分类成多个发射天线组; 根据从移动台反馈的组选择信号选择发送天线组中的一个; 并且在构成所选择的发送天线组的发送天线之间将每个比特流输出到其相关的发送天线。

    Apparatus and method for transmitting and receiving data in multiuser MIMO system
    9.
    发明授权
    Apparatus and method for transmitting and receiving data in multiuser MIMO system 有权
    在多用户MIMO系统中发送和接收数据的装置和方法

    公开(公告)号：US07769390B2

    公开(公告)日：2010-08-03

    申请号：US11059962

    申请日：2005-02-17

    申请人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

    发明人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

    IPC分类号： H04W72/00

    CPC分类号： H04B7/0604 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0822 ,  H04B7/0854

    摘要： A method for transmitting and receiving data in a multiuser Multiple-Input Multiple-Output (MIMO) system including a base station connected to a plurality of user equipments. In the method, each of the user equipments separately calculates channel capacity information using a linear reception scheme and a nonlinear reception scheme, and feeds back the calculated channel capacity information to the base station. The base station separately calculates system capacities using at least two different antenna scheduling schemes based on the channel capacity information fed back from the user equipments, and allocates antennas to the user equipments using a selected antenna scheduling scheme having higher system capacity out of the two antenna scheduling schemes.

    摘要翻译： 一种用于在包括连接到多个用户设备的基站的多用户多输入多输出（MIMO）系统中发送和接收数据的方法。 在该方法中，每个用户设备使用线性接收方式和非线性接收方式分别计算信道容量信息，并将计算出的信道容量信息反馈给基站。 基站基于从用户设备反馈的信道容量信息，使用至少两个不同的天线调度方案分别计算系统容量，并且使用在两个天线中具有较高系统容量的选定的天线调度方案向用户设备分配天线 调度方案