APPARATUS AND METHOD FOR DATA TRANSMISSION IN SC-FDMA SYSTEM WITH MULTIPLE ANTENNAS
    73.
    发明申请
    APPARATUS AND METHOD FOR DATA TRANSMISSION IN SC-FDMA SYSTEM WITH MULTIPLE ANTENNAS 有权
    用于具有多个天线的SC-FDMA系统中的数据传输的装置和方法

    公开(公告)号:US20110149944A1

    公开(公告)日:2011-06-23

    申请号:US13001219

    申请日:2009-06-26

    IPC分类号: H04B7/208

    摘要: According to an aspect of the present invention, an apparatus for data transmission is provided. The apparatus includes a data processing unit generating a data symbol by performing channel coding and constellation mapping on an information bit, a single carrier-frequency division multiple access (SC-FDMA) modulator generating an SC-FDMA symbol by performing discrete Fourier transform (DFT) on the data symbol, by mapping the DFT performed-data symbol to subcarriers, and by performing inverse fast Fourier transform (IFFT) on the subcarrier mapped-DFT performed-data symbol, and a plurality of transmit antennas transmitting the SC-FDMA symbol. A single carrier-frequency division multiple access (SC-FDMA) system can effectively use frequency switched transmit diversity (FSTD) to reduce a peak-to-average power ratio (PAPR) and to maintain a single-carrier property.

    摘要翻译: 根据本发明的一个方面,提供了一种用于数据传输的装置。 该装置包括:通过对信息比特执行信道编码和星座映射来生成数据符号的数据处理单元,通过执行离散傅立叶变换(DFT)生成SC-FDMA符号的单载波频分多址(SC-FDMA)调制器 )通过将DFT执行数据符号映射到子载波,并且通过对子载波映射-DFT执行数据符号执行快速傅立叶逆变换(IFFT),以及发送SC-FDMA符号的多个发送天线 。 单载波频分多址(SC-FDMA)系统可以有效地利用频率切换发射分集(FSTD)来降低峰均功率比(PAPR),并保持单载波特性。

    Method and apparatus for providing downlink control information in an MIMO wireless communication system
    76.
    发明授权
    Method and apparatus for providing downlink control information in an MIMO wireless communication system 有权
    一种用于在MIMO无线通信系统中提供下行链路控制信息的方法和装置

    公开(公告)号:US09112552B2

    公开(公告)日:2015-08-18

    申请号:US13522270

    申请日:2011-01-24

    摘要: The present invention relates to a method in which a user equipment receives a downlink signal from a base station in a wireless communication system that supports downlink MIMO transmission according to one embodiment of the present invention comprises: receiving downlink control information that includes information indicative of the number of layers (N, 1≦N≦8) where one or two enabled code words of the downlink MIMO transmission are mapped; on the basis of the downlink control information, receiving downlink data transmitted over the respective N layers and a UE-specific reference signal for each of the N layers; and decoding the downlink data on the basis of the UE-specific reference signals, wherein the information indicative of the number of layers can further include information on a code for identifying the UE-specific reference signals.

    摘要翻译: 本发明涉及根据本发明的一个实施例的用户设备从支持下行MIMO传输的无线通信系统中的基站接收下行链路信号的方法,包括:接收下行链路控制信息,该信息包括指示 映射下行链路MIMO传输的一个或两个使能码字的层数(N,1≦̸ N≦̸ 8) 基于下行链路控制信息,接收通过各个N个层发送的下行链路数据和N个层中的每一个的UE专用参考信号; 以及基于所述UE特定参考信号对所述下行链路数据进行解码,其中指示所述层数的信息还可以包括关于用于识别所述UE特定参考信号的代码的信息。

    Method and apparatus for transmitting downlink reference signal
    77.
    发明授权
    Method and apparatus for transmitting downlink reference signal 有权
    用于传输下行链路参考信号的方法和装置

    公开(公告)号:US08982848B2

    公开(公告)日:2015-03-17

    申请号:US13384219

    申请日:2010-07-19

    摘要: The present invention relates to transmitting a downlink reference signal in a wireless communication system. A method for a base station to transmit a downlink signal by using two or more layers includes multiplexing and transmitting a reference signal for the two or more layers on the basis of a reference signal pattern on a data region of a downlink subframe and transmitting data for the two or more layers on the data region of the downlink subframe, wherein the reference signal for the two or more layers is a dedicated reference signal that is used to demodulate the data for the two or more layers on a receiving end, and in the multiplexing of the reference signal, the reference signal for the two or more layers is code-division-multiplexed by an orthogonal code having a length of at least 2.

    摘要翻译: 本发明涉及在无线通信系统中发送下行链路参考信号。 基站通过使用两层以上层来发送下行链路信号的方法包括基于下行链路子帧的数据区域上的参考信号模式复用并发送两层或更多层的参考信号,并发送用于 在下行链路子帧的数据区上的两层或更多层,其中两层或更多层的参考信号是专用参考信号,用于解调接收端两层或更多层的数据,而在 参考信号的多路复用,两个或多个层的参考信号由具有至少2的长度的正交码进行码分复用。

    Method and device for codebook generation and downlink signal transmission in a wireless communication system supporting multiple antennas
    78.
    发明授权
    Method and device for codebook generation and downlink signal transmission in a wireless communication system supporting multiple antennas 有权
    用于支持多个天线的无线通信系统中的码本生成和下行链路信号传输的方法和装置

    公开(公告)号:US08948289B2

    公开(公告)日:2015-02-03

    申请号:US13521211

    申请日:2011-01-12

    摘要: The present invention relates to a method in which a base station transmits a downlink signal using 8 antennas may comprise the steps of: mapping a downlink signal to N (1≦N≦4) layers; precoding the signal mapped to the N layers, by using a specific precoding matrix selected from a pre-stored codebook; subjecting the precoded signal to processing for OFDM symbol generation; and transmitting OFDM symbols through 8 antennas. The pre-stored codebook may comprise precoding matrices for the respective ranks corresponding to N, the pre-stored codebook may consist of 16 codebook indexes, and a portion of the precoding matrices for high ranks in the 16 codebook indexes may be generated from the precoding matrices for low ranks.

    摘要翻译: 本发明涉及一种基站使用8个天线发送下行链路信号的方法,其可以包括以下步骤:将下行链路信号映射到N(1≦̸ N≦̸ 4)层; 通过使用从预先存储的码本中选择的特定预编码矩阵来预编码映射到N层的信号; 对预编码信号进行OFDM符号生成处理; 并通过8个天线发射OFDM符号。 预存的码本可以包括对应于N的各个等级的预编码矩阵,预存的码本可以由16个码本索引组成,并且可以从预编码生成16个码本索引中的高等级的预编码矩阵的一部分 低等级的矩阵。

    Method for transmitting common reference signal in downlink MIMO system
    80.
    发明授权
    Method for transmitting common reference signal in downlink MIMO system 有权
    在下行MIMO系统中传输公共参考信号的方法

    公开(公告)号:US08937902B2

    公开(公告)日:2015-01-20

    申请号:US13147795

    申请日:2010-02-09

    IPC分类号: H04W4/00 H04L5/00 H04L27/26

    摘要: The present invention relates to a method for transmitting reference signals for measuring a channel in a downlink MIMO (Multi Input Multi Output) system. The method comprises the steps of: configuring, by a base station at which Nt transmit antennas are configured, Nt reference signals for channel measurement, where Nt≧1; and transmitting, by the base station, the Nt reference signals to a use equipment in subframes at a specific cycle. The specific cycle is configured to include more than one subframe.

    摘要翻译: 本发明涉及用于在下行链路MIMO(多输入多输出)系统中发送用于测量信道的参考信号的方法。 该方法包括以下步骤:通过配置Nt个发射天线的基站来配置用于信道测量的N t个参考信号,其中Nt≥1; 并且由基站将Nt个参考信号以特定周期的子帧发送到使用设备。 该特定周期被配置为包括多于一个子帧。