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83 条记录 (耗时 0.035 秒)

    Power distribution method and apparatus for OFDM system
    71.
    发明授权
    Power distribution method and apparatus for OFDM system 有权
    OFDM系统的功率分配方法和装置

    公开(公告)号：US08995538B2

    公开(公告)日：2015-03-31

    申请号：US12658293

    申请日：2010-02-05

    申请人： Yeon Ju Lim ,  Jae Yoel Kim ,  Sung Ryul Yun ,  Hak Ju Lee ,  Se Ho Myung

    发明人： Yeon Ju Lim ,  Jae Yoel Kim ,  Sung Ryul Yun ,  Hak Ju Lee ,  Se Ho Myung

    IPC分类号： H04L27/28 ,  H04L5/00 ,  H04L1/00

    CPC分类号： H04L5/0044 ,  H04L1/0026 ,  H04L1/0029 ,  H04L5/006

    摘要： An apparatus is capable of distributing power over a number of subcarriers in an OFDM system. The transmission power control method for an Orthogonal Frequency Division Multiplexing (OFDM) communication system according to the present invention includes measuring, at a receiver, channel coefficients of subcarriers, classifying the subcarriers into a predetermined number of groups according to sizes of channel coefficients, generating group indices, and transmitting the group indices of the subcarriers to a transmitter. A transmitter is capable of receiving the group indices of the subcarriers, determining per-group transmission powers, allocating the per-group transmission powers to the corresponding groups, distributing the per-group transmission power over subcarriers in the same level within respective groups, and transmitting signals over the subcarriers with the distributed power level.

    摘要翻译： 一种装置能够在OFDM系统中的多个子载波上分配功率。 根据本发明的用于正交频分复用（OFDM）通信系统的发送功率控制方法包括：在接收机处测量子载波的信道系数，根据信道系数的大小将子载波分类为预定数量的组，生成 组索引，并将子载波的组索引发送到发射机。 发射机能够接收子载波的组索引，确定每组发射功率，向相应组分配每组发射功率，在各组内的相同电平上的子载波上分配每组发射功率，以及 在具有分布式功率电平的子载波上传输信号。

    Channel-encoding/decoding apparatus and method using low-density parity-check codes
    72.
    发明授权
    Channel-encoding/decoding apparatus and method using low-density parity-check codes 有权
    信道编码/解码装置和使用低密度奇偶校验码的方法

    公开(公告)号：US08495459B2

    公开(公告)日：2013-07-23

    申请号：US12624098

    申请日：2009-11-23

    申请人： Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun ,  Hak Ju Lee

    发明人： Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun ,  Hak Ju Lee

    IPC分类号： H03M13/00

    CPC分类号： H03M13/1165 ,  H03M13/1185 ,  H03M13/6516

    摘要： An encoding/decoding apparatus and method using a low-density parity-check code (LDPC code) is disclosed. Basic column group information, serving as a set of information regarding positions of rows with weight 1, is extracted from a reference column in each column group of a predetermined parity-check matrix. Column group information transforms the positions of rows with weight 1 into positions whose lengths are within a required parity length. A parity-check matrix is generated according to the generated column group information. Data is encoded or decoded based on the generated parity-check matrix.

    摘要翻译： 公开了一种使用低密度奇偶校验码（LDPC码）的编码/解码装置和方法。 从预定奇偶校验矩阵的每列组中的参考列中提取用作关于具有权重1的行的位置的信息集合的基本列组信息。 列组信息将具有权重1的行的位置变换为长度在所需奇偶校验长度内的位置。 根据生成的列组信息生成奇偶校验矩阵。 基于生成的奇偶校验矩阵对数据进行编码或解码。

    Method and apparatus for transmitting/receiving feedback information in mobile telecommunication using multiple input multiple output
    75.
    发明授权
    Method and apparatus for transmitting/receiving feedback information in mobile telecommunication using multiple input multiple output 有权
    用于使用多输入多输出在移动电信中发送/接收反馈信息的方法和装置

    公开(公告)号：US08165075B2

    公开(公告)日：2012-04-24

    申请号：US12013786

    申请日：2008-01-14

    申请人： Jin-Kyu Han ,  Hwan-Joon Kwon ,  Dong-Hee Kim ,  Jae-Chon Yu ,  Yeon-Ju Lim

    发明人： Jin-Kyu Han ,  Hwan-Joon Kwon ,  Dong-Hee Kim ,  Jae-Chon Yu ,  Yeon-Ju Lim

    IPC分类号： H04W4/00

    CPC分类号： H04B7/0413 ,  H04B7/061 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0689

    摘要： A method for transmitting feedback information in a mobile communication system using Multiple Input Multiple Output (MIMO) is provided. The method includes, when knockdown precoding is used and Antenna Selection precoding is used, setting an index field for indicating a universal matrix of a precoding matrix of a first reverse feedback channel to a value indicating whether Antenna Selection Space Time Transmit Diversity (STTD) is present; when the knockdown precoding is used and the Antenna Selection precoding is used, writing antenna selection information in a vector bitmap field of the first reverse feedback channel; and when the knockdown precoding is used and the Antenna Selection precoding is used, estimating Channel Quality Information (CQI) according to the antenna selection information and writing the estimated CQI in a CQI field of a second reverse feedback channel.

    摘要翻译： 提供了一种在使用多输入多输出（MIMO）的移动通信系统中发送反馈信息的方法。 该方法包括：当使用击倒预编码并使用天线选择预编码时，将用于指示第一反向反馈信道的预编码矩阵的通用矩阵的索引字段设置为指示天线选择时间发送分集（STTD）是否为 当下; 当使用击倒预编码并使用天线选择预编码时，将天线选择信息写入第一反向反馈信道的矢量位图字段; 并且当使用击倒预编码并且使用天线选择预编码时，根据天线选择信息估计信道质量信息（CQI）并将估计的CQI写入第二反向反馈信道的CQI字段。

    WIRELESS BROADCAST COMMUNICATION SYSTEM AND BROADCAST SERVICE METHOD THEREOF
    77.
    发明申请
    WIRELESS BROADCAST COMMUNICATION SYSTEM AND BROADCAST SERVICE METHOD THEREOF 审中-公开
    无线广播通信系统及其广播服务方法

    公开(公告)号：US20100315986A1

    公开(公告)日：2010-12-16

    申请号：US12813176

    申请日：2010-06-10

    申请人： Il Ho Lee ,  Yeon Ju Lim ,  Hong Sil Jeong

    发明人： Il Ho Lee ,  Yeon Ju Lim ,  Hong Sil Jeong

    IPC分类号： H04W40/00

    CPC分类号： H04L47/10 ,  H04H20/426 ,  H04L47/14 ,  H04L47/15 ,  H04L47/28 ,  H04W52/0216 ,  Y02D70/168

    摘要： A wireless broadcast communication system includes a transmitter that provides broadcast services via a plurality of frames based on inband signaling, and a receiver that switches a sleep mode to an active mode and receives the target broadcast packets, according to the timing information. The receiver is repeatedly switched to the sleep mode according to the timing information. The system uses the scheduling information to detect broadcast packets via a plurality of frames, thereby enhancing the use efficiency of the scheduling information. Although the receiver fails to receive scheduling information via a particular frame, it can detect a position of a broadcast packet using the stored scheduling information.

    摘要翻译： 无线广播通信系统包括：基于带内信令经由多个帧提供广播服务的发射机，以及根据定时信息将睡眠模式切换到活动模式并接收目标广播分组的接收机。 接收机根据定时信息重复切换到睡眠模式。 系统使用调度信息经由多个帧来检测广播分组，从而提高调度信息的使用效率。 虽然接收机不能通过特定帧接收调度信息，但是它可以使用所存储的调度信息来检测广播分组的位置。

    METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DOWNLINK DATA IN WIRELESS COMMUNICATION NETWORK
    78.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DOWNLINK DATA IN WIRELESS COMMUNICATION NETWORK 审中-公开
    用于在无线通信网络中发送/接收下行链路数据的方法和装置

    公开(公告)号：US20100284359A1

    公开(公告)日：2010-11-11

    申请号：US12810955

    申请日：2008-12-26

    申请人： Dong-Hee Kim ,  Hwan-Joon Kwon ,  Jae-Chon Yu ,  Yeon-Ju Lim ,  Cheol Mun ,  Jong-Gwan Yook

    发明人： Dong-Hee Kim ,  Hwan-Joon Kwon ,  Jae-Chon Yu ,  Yeon-Ju Lim ,  Cheol Mun ,  Jong-Gwan Yook

    IPC分类号： H04W72/12 ,  H04L27/28

    CPC分类号： H04B7/024 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0639

    摘要： Disclosed is C-SDMA and C-BF technology for effectively suppressing inter-cell interference from neighboring BTSs only by using partial channel information delivered from an AT over a limited uplink feedback channel in a collaborative wireless communication system employing an FDD scheme and including neighboring BTSs connected to each other through a high-speed wireline communication network. C-SDMA technology makes it possible to select the optimal feedback scheme by considering uplink feedback channel capacity allowed in the system. C-BF technology uses information on beamforming signal weight and main beamforming interference weight vectors to suppress collision between formed by weights that each BTS uses, thereby improving system transmission capacity. Technology providing higher system capacity is adaptively selected from among C-SDMA and C-BF by using limited feedback information, so that high system capacity is provided in various environmental conditions.

    摘要翻译： 公开了C-SDMA和C-BF技术，其仅通过在采用FDD方案并且包括相邻BTS的协作无线通信系统中通过有限上行链路反馈信道从AT传送的部分信道信息来有效地抑制来自相邻BTS的小区间干扰 通过高速有线通信网络相互连接。 C-SDMA技术可以通过考虑系统中允许的上行链路反馈信道容量来选择最佳反馈方案。 C-BF技术使用关于波束成形信号权重和主波束形成干扰权重向量的信息来抑制由每个BTS使用的加权形成的冲突，从而提高系统传输容量。 通过使用有限的反馈信息，从C-SDMA和C-BF中自适应地选择提供更高系统容量的技术，从而在各种环境条件下提供高系统容量。