利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

83 条记录 (耗时 0.037 秒)

    Differential space-time block coding apparatus using eight or less transmit antennas
    52.
    发明申请
    Differential space-time block coding apparatus using eight or less transmit antennas 有权
    使用8个以下的发送天线的差分时空块编码装置

    公开(公告)号：US20050135499A1

    公开(公告)日：2005-06-23

    申请号：US11020285

    申请日：2004-12-23

    申请人： Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung ,  Vahid Tarokh ,  Chan-Soo Hwang

    发明人： Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung ,  Vahid Tarokh ,  Chan-Soo Hwang

    IPC分类号： H04B7/06 ,  H03M13/00 ,  H04L1/02 ,  H04L1/06 ,  H04L27/00

    CPC分类号： H04L1/0643

    摘要： A differential STBC transmitting/receiving apparatus in a multiple antenna system using eight or less transmit antennas is provided. In the differential STBC transmitting apparatus, a symbol mapper receives binary data and generates a number of symbols from the binary data, each symbol having a number of bits. A space-time block encoder generates an STBC by encoding the symbols. A differential processor differentially encodes the STBC through feedback and delay. A distribution matrix processor substitutes the differentially coded STBC into a distribution matrix preset according to the number of transmit antennas, and outputs the differential STBC code of the distribution matrix to the transmit antennas.

    摘要翻译： 提供了一种使用八个或更少的发射天线的多天线系统中的差分STBC发射/接收装置。 在差分STBC发送装置中，符号映射器接收二进制数据并从二进制数据生成多个符号，每个符号具有多个位。 时空块编码器通过对符号进行编码来生成STBC。 差分处理器通过反馈和延迟对STBC进行差分编码。 分配矩阵处理器根据发射天线的数量将差分编码的STBC替换为预设的分布矩阵，并将分布矩阵的差分STBC码输出到发射天线。

    Method and apparatus for scheduling multiple users in a mobile communication system using multiple transmit/receive antennas
    53.
    发明申请
    Method and apparatus for scheduling multiple users in a mobile communication system using multiple transmit/receive antennas 有权
    用于使用多个发射/接收天线在移动通信系统中调度多个用户的方法和装置

    公开(公告)号：US20050032521A1

    公开(公告)日：2005-02-10

    申请号：US10830954

    申请日：2004-04-23

    申请人： Hak-Joo Lee ,  Chung-Yong Lee ,  Jae-Hak Chung ,  Chan-Soo Hwang

    发明人： Hak-Joo Lee ,  Chung-Yong Lee ,  Jae-Hak Chung ,  Chan-Soo Hwang

    IPC分类号： H04J15/00 ,  H04B7/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/26 ,  H04L25/02 ,  H04W24/00 ,  H04W72/12 ,  H04W74/00 ,  H04Q7/20

    CPC分类号： H04B7/0626 ,  H04B7/0417 ,  H04B7/0452 ,  H04L25/0204 ,  H04L25/0248 ,  H04W72/1231

    摘要： Disclosed herein is a scheduling method and apparatus based on eigen values robust against spatial correlation in a mobile communication system supporting multiple users by use of multiple transmit/receive antennas. A user terminal estimates channel characteristics from the transmit antennas to the user terminal, decomposes the estimated channel characteristics into receive channel characteristics and transmit channel characteristics, and feeds back a transmit principal eigen vector to the base station (BS). The BS selects a predetermined number of user terminals having the least correlation using the feedback principal eigen vectors from a plurality of user terminals, constructs a user precoding matrix by combining the principal eigen vectors of the selected user terminals, multiplies data streams for the selected user terminals by the user precoding matrix and transmits the multiplied data to the selected user terminals.

    摘要翻译： 本文公开了一种基于通过使用多个发射/接收天线支持多个用户的移动通信系统中对空间相关性鲁棒的特征值的调度方法和装置。 用户终端估计从发射天线到用户终端的信道特性，将估计的信道特性分解为接收信道特性并发送信道特性，并向基站（BS）馈送发射主特征向量。 BS使用来自多个用户终端的反馈主要本征向量来选择具有最小相关性的预定数量的用户终端，通过组合所选择的用户终端的主要本征向量来构建用户预编码矩阵，将所选用户的数据流相乘 终端，并将所乘的数据发送给所选择的用户终端。

    Adaptive subchannel and bit allocation method using partial channel information feedback in an orthogonal frequency division multiple access communication system
    55.
    发明授权
    Adaptive subchannel and bit allocation method using partial channel information feedback in an orthogonal frequency division multiple access communication system 有权
    在正交频分多址通信系统中使用部分信道信息反馈的自适应子信道和比特分配方法

    公开(公告)号：US08265012B2

    公开(公告)日：2012-09-11

    申请号：US11321546

    申请日：2005-12-29

    申请人： Young-Ho Jung ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam

    发明人： Young-Ho Jung ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam

    IPC分类号： H04W4/00

    CPC分类号： H04L5/0094 ,  H04L1/0017 ,  H04L1/0029 ,  H04L1/0035 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04W24/00 ,  H04W24/10 ,  H04W28/06 ,  H04W72/042 ,  H04W72/0453

    摘要： An adaptive subchannel and bit allocation method in a wireless communication system. A mobile station analyzes channel quality information of a subchannel at a predetermined period and determines a feedback band index with a maximum decision criterion. The mobile station feeds back the determined feedback band index with the maximum decision criterion to a base station. The base station generates band allocation information using the feedback information from the mobile station, and transmits the band allocation information to the mobile station. The mobile station transmits AMC information using the band allocation information received from the base station. The base station estimates a channel using the AMC information transmitted from the mobile station and allocates bits to the allocated band according to the channel estimation result.

    摘要翻译： 一种无线通信系统中的自适应子信道和比特分配方法。 移动台以预定周期分析子信道的信道质量信息，并以最大决策准则确定反馈频带索引。 移动台将确定的具有最大决策准则的反馈频带索引反馈给基站。 基站使用来自移动台的反馈信息生成频带分配信息，并将该频带分配信息发送到移动台。 移动台使用从基站接收到的频带分配信息来发送AMC信息。 基站使用从移动站发送的AMC信息来估计信道，并根据信道估计结果向所分配的频带分配比特。

    Pilot designing method in an uplink OFDMA system
    57.
    发明授权
    Pilot designing method in an uplink OFDMA system 有权
    上行OFDMA系统中的导频设计方法

    公开(公告)号：US07710918B2

    公开(公告)日：2010-05-04

    申请号：US11078157

    申请日：2005-03-11

    申请人： Young-Ho Jung ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Hong-Sun Park

    发明人： Young-Ho Jung ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Hong-Sun Park

    IPC分类号： H04W4/00

    CPC分类号： H04L5/0048 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232

    摘要： A pilot designing method in an uplink OFDMA system is provided. In the uplink OFDMA system, communications are carried out in a frame divided into time-frequency lattices, and each time-frequency lattice includes a plurality of data symbol periods and a plurality of pilot symbol periods intermittently arranged with respect to the data symbol periods. The frame is divided into a plurality of blocks. The blocks are allocated to the terminals. A predetermined allocated pilot time-frequency lattice is shared between adjacent terminals.

    摘要翻译： 提供了一种上行链路OFDMA系统中的导频设计方法。 在上行链路OFDMA系统中，以划分为时频格点的帧进行通信，并且每个时间频率格子包括相对于数据符号周期间歇地布置的多个数据符号周期和多个导频符号周期。 该帧被分成多个块。 这些块分配给终端。 在相邻的终端之间共享预定的分配的导频时间频率点阵。

    Differential space-time block coding apparatus with high transmission rate and method thereof
    58.
    发明授权
    Differential space-time block coding apparatus with high transmission rate and method thereof 有权
    具有高传输速率的差分时空块编码装置及其方法

    公开(公告)号：US07567623B2

    公开(公告)日：2009-07-28

    申请号：US11206563

    申请日：2005-08-18

    申请人： Seung-Hoon Nam ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Young-Ho Jung ,  Vahid Tarokh

    发明人： Seung-Hoon Nam ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Young-Ho Jung ,  Vahid Tarokh

    IPC分类号： H04L27/00 ,  H04K1/02

    CPC分类号： H04L1/0668 ,  H04B7/0669 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0662

    摘要： Disclosed is a differential space-time block coding apparatus with a high transmission rate in a wireless communication system employing multiple transmit antennas and a method thereof. The differential space-time block coding method includes the steps of, when elements of a transmission matrix B43v are transmitted in a predetermined block (a vth block) through a predetermined transmit antenna at a predetermined time, modulating a symbol Sv of inputted binary data to a symbol Sv+1, creating a matrix S44v+1 in a block (a (v+1)th block) following the predetermined block by substituting the modulated symbol for the matrix P44, and then, in order to perform a differential encoding function, multiplying the matrix B43v by the matrix S44v+1 so as to calculate a new matrix B43v+1 to be transmitted in the (v+1)th block.

    摘要翻译： 公开了在采用多个发射天线的无线通信系统中具有高传输速率的差分时空块编码装置及其方法。 差分空时块编码方法包括以下步骤：当在预定时间通过预定发送天线在预定块（第v块）中发送发送矩阵B43v的元素时，将输入的二进制数据的符号Sv调制到 符号Sv + 1，通过将调制符号替换为矩阵P44，在预定块之后的块（a（v + 1）块中）创建矩阵S44v + 1，然后，为了执行差分编码功能 ，将矩阵B43v乘以矩阵S44v + 1，以计算要在第（v + 1）块中发送的新矩阵B43v + 1。

    Transmitting and receiving apparatus for supporting transmit antenna diversity using space-time block code
    60.
    发明申请
    Transmitting and receiving apparatus for supporting transmit antenna diversity using space-time block code 有权
    使用时空块码支持发射天线分集的发射和接收装置

    公开(公告)号：US20080130792A1

    公开(公告)日：2008-06-05

    申请号：US11804126

    申请日：2007-05-17

    申请人： Chan-Soo Hwang ,  Vahid Tarokh ,  Seung-Hoon Nam ,  Jae-Hak Chung ,  Yung-Soo Kim

    发明人： Chan-Soo Hwang ,  Vahid Tarokh ,  Seung-Hoon Nam ,  Jae-Hak Chung ,  Yung-Soo Kim

    IPC分类号： H03K9/00

    CPC分类号： H04L1/0618 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0643

    摘要： A transmitter and a receiver are disclosed herein that support transmit antenna diversity using space-time block coding in a wireless communication system. The transmitter produces symbol combinations containing, as their elements, input symbols, the inversions and conjugates of the symbols, and symbols obtained by rotating the phases of the symbols once, forms a matrix having symbols in at least two columns orthogonal to each other with the symbol combinations, and transmits the matrix. The receiver detects symbols that minimize maximum likelihood (ML) decoding metrics over all possible symbols using channel gains from transmit antennas to a receive antenna. Also, the receiver selects candidate symbols among all possible symbols according to the characteristics of transmitted modulation symbols and detects symbols that minimize the ML decoding metrics.

    摘要翻译： 本文公开的发射器和接收器在无线通信系统中支持使用空时块编码的发射天线分集。 发射机产生符号组合，其包含输入符号，符号的反转和共轭以及通过旋转符号的相位获得的符号一次作为其元素，形成具有彼此正交的至少两列中的符号的矩阵， 符号组合，并传输矩阵。 接收机通过使用从发射天线到接收天线的信道增益，检测所有可能符号上的最大似然（ML）解码度量的符号。 此外，接收机根据发送的调制符号的特性来选择所有可能符号中的候选符号，并且检测使ML解码度量最小化的符号。