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    Method for transmitting broadcast channel in a cellular wireless communication system
    21.
    发明申请
    Method for transmitting broadcast channel in a cellular wireless communication system 有权
    用于在蜂窝无线通信系统中发送广播信道的方法

    公开(公告)号：US20060154672A1

    公开(公告)日：2006-07-13

    申请号：US11332660

    申请日：2006-01-13

    申请人： Young-Ho Jung ,  Jae-Hak Chung ,  Seung-Hoon Nam ,  Yung-Soo Kim ,  Sung-Hyun Cho

    发明人： Young-Ho Jung ,  Jae-Hak Chung ,  Seung-Hoon Nam ,  Yung-Soo Kim ,  Sung-Hyun Cho

    IPC分类号： H04Q7/20

    CPC分类号： H04W48/12

    摘要： A method for transmitting to one cell a frame including broadcast channels in a cellular wireless communication system in which a base station supports a plurality of physical channels corresponding to the broadcast channels. The base station generates the frame and transmits the generated frame to a mobile station. The frame includes separate broadcast channels for the respective physical channels. A position, in the frame, of a first broadcast channel for a physical channel capable of supporting a mobile station having the worst channel state is fixed in all of transmission frames. The first broadcast channel includes positional information of the remaining broadcast channels except for the first broadcast channel. The mobile station detects only an address of a broadcast channel for a physical channel allocated thereto from the first broadcast channel among broadcast channels belonging to the frame.

    摘要翻译： 一种用于在蜂窝无线通信系统中向一个小区发送包括广播信道的帧的方法，其中基站支持对应于广播信道的多个物理信道。 基站生成帧并将生成的帧发送到移动台。 该帧包括用于相应物理信道的单独广播信道。 在帧中，能够支持具有最差信道状态的移动站的物理信道的第一广播信道的位置在所有传输帧中是固定的。 第一广播频道包括除了第一广播频道之外的剩余广播频道的位置信息。 移动台仅在属于该帧的广播信道中从第一广播信道检测分配给其的物理信道的广播信道的地址。

    Apparatus and method for eliminating multi-user interference
    22.
    发明授权
    Apparatus and method for eliminating multi-user interference 有权
    消除多用户干扰的装置和方法

    公开(公告)号：US07907912B2

    公开(公告)日：2011-03-15

    申请号：US11601049

    申请日：2006-11-17

    申请人： Seung-Hoon Nam ,  Myeon-Kyun Cho ,  Yung-Soo Kim ,  Sei-Joon Shim ,  Kyeong-Yeon Kim ,  Chung-Yong Lee

    发明人： Seung-Hoon Nam ,  Myeon-Kyun Cho ,  Yung-Soo Kim ,  Sei-Joon Shim ,  Kyeong-Yeon Kim ,  Chung-Yong Lee

    IPC分类号： H04B17/00

    CPC分类号： H04B7/0408 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0639

    摘要： Provided are an apparatus and method for eliminating multi-user interference in a codebook-based beamforming system. A transmitter for providing a service to multi-users in the codebook-based beamforming system includes a beamformer for generating beamformed user signals by multiplying transmit data of users, to whom the service is to be provided, by corresponding weighting factor vectors using feedback information; a null space generator for generating a null space matrix orthogonal to weighting factor vectors of other users; and a projector for projecting the beamformed user signals on the corresponding null space matrix and transmitting the resulting signals through a plurality of antennas. Because the multi-user signals can maintain orthogonality, the performance degradation caused by the multi-user interference can be prevented.

    摘要翻译： 提供了一种用于消除基于码本的波束成形系统中的多用户干扰的装置和方法。 用于在基于码本的波束成形系统中为多用户提供服务的发射机包括波束形成器，用于通过使用反馈信息将相应的加权因子向量乘以要提供服务的用户的发送数据来生成波束形成的用户信号; 零空间生成器，用于生成与其他用户的加权因子矢量正交的零空间矩阵; 以及用于将波束形成的用户信号投影在相应的零空间矩阵上并通过多个天线发送所得到的信号的投影仪。 因为多用户信号可以保持正交性，所以可以防止由多用户干扰引起的性能下降。

    Transmitting and receiving apparatus for supporting transmit antenna diversity using space-time block code
    24.
    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。

    Apparatus and method for transmitting and receiving data in a mobile communication system using space-time trellis code
    25.
    发明授权
    Apparatus and method for transmitting and receiving data in a mobile communication system using space-time trellis code 有权
    在使用时空网格码的移动通信系统中发送和接收数据的装置和方法

    公开(公告)号：US07333551B2

    公开(公告)日：2008-02-19

    申请号：US10694197

    申请日：2003-10-27

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

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

    IPC分类号： H04L23/02

    CPC分类号： H04L1/0069 ,  H04L1/0618

    摘要： A mobile communication system having M transmission antennas for receiving P information bit streams and encoding the received information bit streams with a space-time trellis code (STTC) according to an optimal generator polynomial; modulating the encoded P information bit streams in a predetermined modulation scheme and outputting modulation symbol streams; and puncturing at least one modulation symbol in a predetermined position from each of the M modulation symbol streams, and transmitting the punctured modulation symbol streams through the M transmission antennas, thereby increasing a data rate while maintaining maximum diversity gain.

    摘要翻译： 一种具有M个发送天线的移动通信系统，用于接收P个信息比特流，并根据最佳生成多项式用空时格码（STTC）对接收到的信息比特流进行编码; 在预定的调制方案中调制编码的P信息比特流并输出调制符号流; 以及从M个调制符号流中的每一个对预定位置的至少一个调制符号进行穿孔，并通过M个发送天线发送删余的调制符号流，从而在保持最大分集增益的同时增加数据速率。

    Transmitter and receiver provided in wireless communication system using four transmitting antennas
    26.
    发明授权
    Transmitter and receiver provided in wireless communication system using four transmitting antennas 有权
    在使用四个发射天线的无线通信系统中提供的发射机和接收机

    公开(公告)号：US07298797B2

    公开(公告)日：2007-11-20

    申请号：US10692894

    申请日：2003-10-24

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

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

    IPC分类号： H04L27/20

    CPC分类号： H04L1/0662

    摘要： An apparatus using transmitting antenna diversity to combat degradation due to fading in a wireless communication system. At least two symbols of four symbols to be transmitted through four transmitting antennas are rotated by predetermined phase values. An encoder configures four combinations for four input symbols so that a sequence of four symbols can be transmitted once by each transmitting antenna during each time interval. The combinations are transferred to the four transmitting antennas during four time intervals. Before the four input symbols are transmitted to the transmitting antennas, at least two symbols selected from the four input symbols are rotated by predetermined phase values. Therefore, the maximum diversity order can be obtained, a transmission delay time can be reduced, and the effect of fast fading can be reduced.

    摘要翻译： 一种使用发射天线分集来防止由于无线通信系统中的衰落而导致的退化的装置。 要通过四个发送天线发送的四个符号的至少两个符号被旋转预定相位值。 编码器为四个输入符号配置四个组合，使得在每个时间间隔期间，每个发送天线可以发送一次四个符号的序列。 在四个时间间隔内将这些组合传送到四个发射天线。 在将四个输入符号发送到发送天线之前，从四个输入符号中选择的至少两个符号被旋转预定相位值。 因此，可以获得最大分集顺序，可以减少传输延迟时间，并且可以降低快速衰落的影响。

    Apparatus and method for transmitting/receiving a pilot sequence in a mobile communication system using space-time trellis code
    27.
    发明申请
    Apparatus and method for transmitting/receiving a pilot sequence in a mobile communication system using space-time trellis code 有权
    在使用时空网格码的移动通信系统中发送/接收导频序列的装置和方法

    公开(公告)号：US20070237262A1

    公开(公告)日：2007-10-11

    申请号：US11809317

    申请日：2007-05-31

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

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

    IPC分类号： H03K9/00

    CPC分类号： H04L1/0069 ,  H04L1/0618 ,  H04L25/0202

    摘要： A mobile communication system includes M transmission antennas, P encoders for receiving P information bit streams and encoding the received information bit streams with a space-time trellis code (STTC), and M modulators for modulating information bit streams output from the P encoders in a predetermined modulation scheme and outputting modulation symbol streams. A sequence used for channel estimation is generated, and the sequence is transmitted in substitute for at least one modulation symbol in a predetermined position through the M transmission antennas, for each of the modulation symbol streams output from the M modulators.

    摘要翻译： 一种移动通信系统包括：M个发送天线，用于接收P个信息比特流的P编码器，并用空时格码（STTC）对接收到的信息比特流进行编码; M个调制器，用于调制从P编码器输出的信息比特流 预定调制方案并输出调制符号流。 产生用于信道估计的序列，并且对于从M个调制器输出的每个调制符号流，通​​过M个发送天线，发送该序列以代替预定位置中的至少一个调制符号。

    Transmission apparatus and method for MIMO system
    29.
    发明授权
    Transmission apparatus and method for MIMO system 有权
    MIMO系统的传输装置和方法

    公开(公告)号：US08050356B2

    公开(公告)日：2011-11-01

    申请号：US11345717

    申请日：2006-02-02

    申请人： Seung-Hoon Nam ,  Chan-Soo Hwang ,  Jae-Hak Chung ,  Young-Ho Jung ,  Won-Il Roh ,  Chan-Byoung Chae

    发明人： Seung-Hoon Nam ,  Chan-Soo Hwang ,  Jae-Hak Chung ,  Young-Ho Jung ,  Won-Il Roh ,  Chan-Byoung Chae

    IPC分类号： H04L27/00

    CPC分类号： H04B7/0689 ,  H04B7/0691 ,  H04B7/0871 ,  H04B7/0874 ,  H04L1/0071 ,  H04L1/06

    摘要： A transmitter in a multiple input multiple output (MIMO) communication system is provided. The transmitter includes a multiplexer for multiplexing an input bit stream into a plurality of bit streams, and outputting the bit streams in parallel; a bit-order rearranger for reordering bits constituting the bit streams, which are output from the multiplexer in the same time period, and outputting the reordered bits as reordered bit streams; and a modulator for modulating the parallel reordered bit streams output from the bit-order rearranger according to their associated modulation schemes, and transmitting the modulated symbols via their associated antennas.

    摘要翻译： 提供了一种多输入多输出（MIMO）通信系统中的发射机。 发射机包括多路复用器，用于将输入比特流复用成多个比特流，并且并行地输出比特流; 用于重新排序构成比特流的比特序列重排器，其在同一时间段内从多路复用器输出，并将重新排序的比特输出为重新排序的比特流; 以及调制器，用于根据它们相关联的调制方案来调制从位顺序重排器输出的并行重排序比特流，以及经由其相关天线发送调制符号。