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50 条记录 (耗时 0.019 秒)

    DOWNLINK MULTIPLE INPUT MULTIPLE OUTPUT ENHANCEMENTS FOR SINGLE-CELL WITH REMOTE RADIO HEADS
    37.
    发明申请
    DOWNLINK MULTIPLE INPUT MULTIPLE OUTPUT ENHANCEMENTS FOR SINGLE-CELL WITH REMOTE RADIO HEADS 有权
    下行多路输入多路输出增强型单电源与远程无线电头

    公开(公告)号：US20120269278A1

    公开(公告)日：2012-10-25

    申请号：US13451718

    申请日：2012-04-20

    申请人： Eko Onggosanusi ,  Vikram Chandrasekhar ,  Runhua Chen

    发明人： Eko Onggosanusi ,  Vikram Chandrasekhar ,  Runhua Chen

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0469 ,  H04B7/024 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0665 ,  H04B7/0691 ,  H04B7/10 ,  H04W72/1294

    摘要： A base station selects a subset of at least one geographically separated antennas for each of the plurality of user equipments. The base station forms at least layer of data stream including modulated symbols, precodes the data stream via multiplication with the NT-by-N precoding matrix where N is the number of said layers and NT is the number of transmit antenna elements and transmits the precoded layers of data stream to the user equipment via the selected geographically separated antennas. The base station signals the subset of the plurality of geographically separated antennas via higher layer Radio Resource Control or via a down link grant mechanism. The base station optionally does not signal the subset of the plurality of geographically separated antennas to the corresponding mobile user equipment.

    摘要翻译： 基站为多个用户设备中的每一个选择至少一个地理上分离的天线的子集。 基站至少形成包括调制符号的数据流层，通过与NT-by-N预编码矩阵相乘对数据流进行预编码，其中N是所述层的数量，NT是发射天线单元的数量，并且传输预编码 经由选择的地理上分离的天线到用户设备的数据流层。 基站通过较高层无线电资源控制或经由下行链路授权机制向多个地理上分离的天线的子集发出信号。 基站可选地不向相应的移动用户设备发送多个地理上分离的天线的子集。

    Reference Signal Sequences and Multi-User Reference Signal Sequence Allocation
    38.
    发明申请
    Reference Signal Sequences and Multi-User Reference Signal Sequence Allocation 审中-公开
    参考信号序列和多用户参考信号序列分配

    公开(公告)号：US20070183386A1

    公开(公告)日：2007-08-09

    申请号：US11461982

    申请日：2006-08-02

    申请人： Tarik Muharemovic ,  Eko Onggosanusi ,  Aris Papasakellariou

    发明人： Tarik Muharemovic ,  Eko Onggosanusi ,  Aris Papasakellariou

    IPC分类号： H04B1/00 ,  H04B7/208

    CPC分类号： H04L5/023 ,  H04L27/2613 ,  H04W72/04 ,  H04W74/00

    摘要： Embodiments of the invention provide method for allocating CAZAC pilot (reference signal) sequences in multiple access OFDMA systems, or alternatively, in multiple access DFT-spread OFDM(A) systems (or SC-FDMA). Reference signal transmissions from different mobiles can either be distinguished by use of disjoint sub-carriers (frequency division orthogonality), or alternatively by use of distinct cyclic shifts of one base CAZAC sequence. In a wireless cellular network, neighboring cells should utilize different CAZAC sequences, in order to mitigate out-of-cell interference.

    摘要翻译： 本发明的实施例提供了用于在多接入OFDMA系统中分配CAZAC导频（参考信号）序列的方法，或者在多址DFT扩展OFDM（A）系统（或SC-FDMA）中分配CAZAC导频（参考信号）序列。 可以通过使用不相交的子载波（频分复用性）来区分来自不同移动台的参考信号传输，或者通过使用一个基本CAZAC序列的不同的循环移位来区分来自不同移动台的参考信号传输。 在无线蜂窝网络中，相邻小区应该利用不同的CAZAC序列，以便减轻小区外的干扰。

    Downlink multiple input multiple output enhancements for single-cell with remote radio heads
    39.
    发明授权
    Downlink multiple input multiple output enhancements for single-cell with remote radio heads 有权
    用于具有远程无线电头的单小区的下行多输入多输出增强

    公开(公告)号：US08948293B2

    公开(公告)日：2015-02-03

    申请号：US13451718

    申请日：2012-04-20

    申请人： Eko Onggosanusi ,  Vikram Chandrasekhar ,  Runhua Chen

    发明人： Eko Onggosanusi ,  Vikram Chandrasekhar ,  Runhua Chen

    IPC分类号： H04L27/10

    CPC分类号： H04B7/0469 ,  H04B7/024 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0665 ,  H04B7/0691 ,  H04B7/10 ,  H04W72/1294

    摘要： A base station selects a subset of at least one geographically separated antennas for each of the plurality of user equipments. The base station forms at least layer of data stream including modulated symbols, precodes the data stream via multiplication with the NT-by-N precoding matrix where N is the number of said layers and NT is the number of transmit antenna elements and transmits the precoded layers of data stream to the user equipment via the selected geographically separated antennas. The base station signals the subset of the plurality of geographically separated antennas via higher layer Radio Resource Control or via a down link grant mechanism. The base station optionally does not signal the subset of the plurality of geographically separated antennas to the corresponding mobile user equipment.

    摘要翻译： 基站为多个用户设备中的每一个选择至少一个地理上分离的天线的子集。 基站至少形成包括调制符号的数据流层，通过与NT-by-N预编码矩阵相乘对数据流进行预编码，其中N是所述层的数量，NT是发射天线单元的数量，并且传输预编码 经由选择的地理上分离的天线到用户设备的数据流层。 基站通过较高层无线电资源控制或经由下行链路授权机制向多个地理上分离的天线的子集发出信号。 基站可选地不向相应的移动用户设备发送多个地理上分离的天线的子集。

    Six transmit antenna codebook design
    40.
    发明授权
    Six transmit antenna codebook design 有权
    六发射天线码本设计

    公开(公告)号：US08781018B2

    公开(公告)日：2014-07-15

    申请号：US13455786

    申请日：2012-04-25

    申请人： Eko Onggosanusi ,  Runhua Chen

    发明人： Eko Onggosanusi ,  Runhua Chen

    IPC分类号： H04B7/02 ,  H04L1/02

    CPC分类号： H04L25/03343 ,  H04L2025/03426

    摘要： A method of wireless data transmission includes a base station having six antennas and at least one user equipment. The base station forms at least one layer of data stream including modulated symbols, precodes the at least one layer of data stream via multiplication with consecutive first and second precoding matrices and transmit the precoded data stream to the at least one user equipment via the six antennas. The first precoding matrix W1 is a block diagonal matrix formed by two identical 3 by Nb matrices, where Nb is the number of distinct Discrete Fourier Transform vectors. The second precoding matrix W2 introduces a phase shift between the two 3 by Nb matrices and selects a column subset from the first precoding matrix.

    摘要翻译： 无线数据传输的方法包括具有六个天线和至少一个用户设备的基站。 基站形成包括调制符号的至少一层数据流，经由与连续的第一和第二预编码矩阵相乘对至少一层数据流进行预编码，并经由六个天线将预编码的数据流发送到至少一个用户设备 。 第一预编码矩阵W1是由两个相同的3个Nb矩阵形成的块对角矩阵，其中Nb是不同离散傅立叶变换向量的数量。 第二预编码矩阵W2在两个3乘Nb矩阵之间引入相移，并从第一预编码矩阵中选择列子集。