利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

106 条记录 (耗时 0.034 秒)

    Transmission apparatus and method for MIMO system
    61.
    发明申请
    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：US20060215784A1

    公开(公告)日：2006-09-28

    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-II Roh ,  Chan-Byoung Chae

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

    IPC分类号： H04B7/06

    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。

    System and method for implementing a handoff using a multiparty service in a mobile communication system
    62.
    发明授权
    System and method for implementing a handoff using a multiparty service in a mobile communication system 有权

    公开(公告)号：US07096020B2

    公开(公告)日：2006-08-22

    申请号：US10337717

    申请日：2003-01-07

    申请人： Jae-Am Choi ,  Chan-Byoung Chae

    发明人： Jae-Am Choi ,  Chan-Byoung Chae

    IPC分类号： H04Q7/20

    CPC分类号： H04W36/14 ,  H04W36/30

    摘要： A handoff system and method using an MPTY (multiparty) service in a mobile communication system. When a terminal senses that it is located at the boundary of a WCDMA during a WCDMA communication service, it transitions to a first state. In the first state, the terminal requests an MPTY service to a BS in a CDMA network. If the strength of a first current WCDMA signal is less than a predetermined first threshold, the terminal transitions to a second state. In the second state, the terminal requests an available MPTY call to be maintained. If the strength of a second current WCDMA signal is less than a predetermined second threshold, the terminal transitions to a third state. Then the terminal establishes a CDMA call using the maintained MPTY call in the third state. If the strength of a third current WCDMA signal is less than a predetermined third threshold, the terminal ends the WCDAM call.

    Apparatus and method for receiving signals in a mobile communication system using adaptive antenna array technology
    65.
    发明申请
    Apparatus and method for receiving signals in a mobile communication system using adaptive antenna array technology 有权
    在使用自适应天线阵列技术的移动通信系统中接收信号的装置和方法

    公开(公告)号：US20050032476A1

    公开(公告)日：2005-02-10

    申请号：US10914461

    申请日：2004-08-09

    申请人： Chan-Byoung Chae ,  Pan-Yuh Joo ,  Seok-Hyun Yoon

    发明人： Chan-Byoung Chae ,  Pan-Yuh Joo ,  Seok-Hyun Yoon

    IPC分类号： H04B7/08 ,  H04B15/00

    CPC分类号： H04B7/086 ,  H04B7/0854

    摘要： A base station having at least one reception antenna generates a reception beam using a previous reception beam weight and a despread signal of a current reception signal, calculates an error value indicating a difference between the current reception signal and a desired reception signal, and calculates a current reception beam weight using the previous reception beam weight, the despread signal and the error value. The base station generates a reception beam weight step value using the error value and an output signal, calculates a difference between the previous reception beam weight and a product of the reception beam weight step value, the despread signal, and a conjugate value of the error value, as the current reception beam weight, and selects the reception beam weight step value such that the current reception beam weight becomes the optimal reception beam.

    摘要翻译： 具有至少一个接收天线的基站使用先前接收波束权重和当前接收信号的去扩展信号来生成接收波束，计算表示当前接收信号与期望接收信号之间的差的误差值，并计算出 使用先前接收波束权重的当前接收波束权重，解扩信号和误差值。 基站使用误差值和输出信号生成接收波束加权步长值，计算先前的接收波束权重与接收波束权重步长值，解扩展信号和误差的共轭值之间的差 作为当前接收波束权重，并且选择接收波束加权步长值使得当前接收波束权重变为最佳接收波束。

    APPARATUSES AND/OR METHODS OF INTERFERENCE MITIGATION AND/OR RATE IMPROVEMENT VIA UNCOORDINATED BEAMFORMING IN HETEROGENEOUS NETWORKS
    66.
    发明申请
    APPARATUSES AND/OR METHODS OF INTERFERENCE MITIGATION AND/OR RATE IMPROVEMENT VIA UNCOORDINATED BEAMFORMING IN HETEROGENEOUS NETWORKS 审中-公开
    干扰减少和/或改进的装置和/或方法通过异构网络中的不协调的波束形成

    公开(公告)号：US20120034874A1

    公开(公告)日：2012-02-09

    申请号：US12938728

    申请日：2010-11-03

    申请人： Simon YIU ,  Doru Calin ,  Chan-Byoung Chae ,  Kai Yang

    发明人： Simon YIU ,  Doru Calin ,  Chan-Byoung Chae ,  Kai Yang

    IPC分类号： H04B15/00 ,  H04B17/00

    CPC分类号： H04B7/086

    摘要： A method of selecting beamforming vectors for a first transmitter and a first receiver communicating via a first communication link to reduce interference at a second transmitter and a second receiver communicating via a second communication link includes estimating a transmission null space for the second transmitter with respect to the first receiver and estimating a reception null space for the second receiver with respect to the first transmitter. The method further includes determining a first transmission beamforming vector for the first transmitter that falls within the estimated reception null space, and determining a first reception beamforming vector for the first receiver that falls within the estimated transmission null space.

    摘要翻译： 选择用于第一发射机和第一接收机的波束成形向量的方法，所述第一发射机和第一接收机经由第一通信链路进行通信以减少在第二发射机处的干扰，以及经由第二通信链路进行通信的第二接收机包括：估计第二发射机相对于 所述第一接收机和所述第二接收机相对于所述第一发射机估计接收零空间。 该方法还包括确定落在估计的接收零空间内的第一发射机的第一传输波束成形向量，以及确定落入估计的传输空间空间内的第一接收机的第一接收波束成形向量。

    Transmission apparatus and method for MIMO system
    67.
    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。

    Methods For Reducing Interference In A Communication System
    68.
    发明申请
    Methods For Reducing Interference In A Communication System 有权
    减少通信系统干扰的方法

    公开(公告)号：US20110183623A1

    公开(公告)日：2011-07-28

    申请号：US13010262

    申请日：2011-01-20

    申请人： Kai Yang ,  Chan-Byoung Chae ,  Doru Calin ,  Denis Rouffet ,  Simon Yiu

    发明人： Kai Yang ,  Chan-Byoung Chae ,  Doru Calin ,  Denis Rouffet ,  Simon Yiu

    IPC分类号： H04B15/00

    CPC分类号： H04W72/082 ,  H04B7/0408 ,  H04W16/28 ,  H04W16/30 ,  H04W72/046

    摘要： Example embodiments are directed to methods of reducing interference in a communication system. In at least one example embodiment, a method includes first determining, by a first transmitter having a multi-directional antenna configured to produce a plurality of beams, at least one interference level of at least one interfering beam of a plurality of beams of at least one transmitter in the communication system, second determining a transmitting beam pattern based on the interference level, the transmitting beam pattern indicating a sequence of illuminating the plurality of beams at corresponding time slots, third determining a fractional frequency reuse pattern based on the transmitting beam pattern, and transmitting data based on the transmitting beam pattern and the frequency reuse pattern.

    摘要翻译： 示例性实施例涉及减少通信系统中的干扰的方法。 在至少一个示例性实施例中，一种方法包括首先由具有被配置为产生多个波束的多方向天线的第一发射机确定至少一个至少一个波束的至少一个干扰波束的至少一个干扰电平 通信系统中的一个发射机，基于干扰电平来第二确定发射波束图案，所述发射波束图案指示在相应时隙照射多个波束的序列，第三确定基于所述发射波束图案的分数频率复用模式 并且基于发送波束图案和频率重用模式发送数据。

    Method and apparatus for space-time coding using lifting low density parity check codes in a wireless communication system
    70.
    发明授权
    Method and apparatus for space-time coding using lifting low density parity check codes in a wireless communication system 有权
    在无线通信系统中使用提升低密度奇偶校验码进行时空编码的方法和装置

    公开(公告)号：US07729437B2

    公开(公告)日：2010-06-01

    申请号：US10964275

    申请日：2004-10-13

    申请人： Hong-Sil Jeong ,  Jae-Yoel Kim ,  Chan-Byoung Chae

    发明人： Hong-Sil Jeong ,  Jae-Yoel Kim ,  Chan-Byoung Chae

    IPC分类号： H04B7/02

    CPC分类号： H04L1/0057 ,  H04L1/0071 ,  H04L1/0656

    摘要： A mobile communication system and method for transmitting signals through a plurality of transmission antennas by space-time coding the signals. The signals are transmitted using a low density parity check code. A lifting low density parity check matrix is formed by expanding values of elements in a low density parity check matrix with a sub-matrix corresponding to a number of the transmission antennas. The signals to be transmitted are coded using the lifting low density parity check matrix. Thereafter, the coded signals are serial/parallel converted and transmitted through the transmission antennas.

    摘要翻译： 一种用于通过对信号进行空时编码来通过多个发送天线发送信号的移动通信系统和方法。 使用低密度奇偶校验码传输信号。 通过使用与多个发送天线对应的子矩阵在低密度奇偶校验矩阵中扩展元素的值来形成提升低密度奇偶校验矩阵。 要发送的信号使用提升低密度奇偶校验矩阵进行编码。 此后，编码信号被串行/并行转换并通过发送天线发送。