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120 条记录 (耗时 0.032 秒)

    Method and system of orthogonalizing signal transmitted from BS applied to OFDM access
    1.
    发明申请
    Method and system of orthogonalizing signal transmitted from BS applied to OFDM access 审中-公开
    将从BS发送的信号正交化的方法和系统应用于OFDM接入

    公开(公告)号：US20070258529A1

    公开(公告)日：2007-11-08

    申请号：US11789673

    申请日：2007-04-25

    申请人： Zongchuang Liang ,  Dong-Seek Park ,  Chang-Yoon Oh ,  Young-Kwon Cho ,  Sung-Kwon Hong

    发明人： Zongchuang Liang ,  Dong-Seek Park ,  Chang-Yoon Oh ,  Young-Kwon Cho ,  Sung-Kwon Hong

    IPC分类号： H04L27/28

    CPC分类号： H04L5/023 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2647

    摘要： A method of orthogonalizing signals transmitted from a BS in an OFDMA system, at a transmitting end, includes a) performing encoding, interleaving and modulation on original information bits; b) allocating sub-carriers with equivalent intervals to a sub-channel, and dividing channels into two parts of a cell edge user channel and a center area channel; c) mapping modulated information symbols to the corresponding sub-carriers; d) performing orthogonalizing processing on the two parts of channels; e) for a user at an edge of the cell, according to result of step b), dividing an OFDM symbol into subsections of equal length; f) multiplying the subsections obtained from step e) by a corresponding orthogonalizing sequence of the cell; g) adding the OFDM symbols of the two parts together to form a whole OFDM symbol; h) adding a cyclic prefix for the system; and i) performing D/A conversion, RF processing and feedback over a transmitting antenna on a base-band signal.

    摘要翻译： 一种在发送端正交化从OFDMA系统发送的信号的方法包括：a）对原始信息比特执行编码，交织和调制; b）向子信道分配具有等效间隔的子载波，并将信道划分为小区边缘用户信道和中心区域信道的两部分; c）将调制信息符号映射到相应的子载波; d）对信道的两部分执行正交化处理; e）根据步骤b）的结果，针对小区边缘的用户，将OFDM符号划分成等长的子段; f）将从步骤e）获得的子段乘以单元的对应正交化序列; g）将两个部分的OFDM符号相加在一起以形成整个OFDM符号; h）为系统添加循环前缀; 以及i）在基带信号上通过发送天线执行D / A转换，RF处理和反馈。

    Apparatus and method for controlling transmission/reception power by measuring propagation delay and processing time in a wireless communication system
    4.
    发明申请
    Apparatus and method for controlling transmission/reception power by measuring propagation delay and processing time in a wireless communication system 审中-公开
    通过测量无线通信系统中的传播延迟和处理时间来控制发射/接收功率的装置和方法

    公开(公告)号：US20070097900A1

    公开(公告)日：2007-05-03

    申请号：US11588433

    申请日：2006-10-27

    申请人： Do-Young Kim ,  Sung-Kwon Hong ,  Young-Kwon Cho ,  Eun-Taek Lim ,  Dong-Seek Park ,  Marcos Katz

    发明人： Do-Young Kim ,  Sung-Kwon Hong ,  Young-Kwon Cho ,  Eun-Taek Lim ,  Dong-Seek Park ,  Marcos Katz

    IPC分类号： H04B7/185

    CPC分类号： H04W52/46 ,  H04W52/226 ,  H04W52/283

    摘要： An apparatus and method for controlling power in a multi-hop relay broadband wireless communication system are provided. A BS sends a signal to an RS and an MS to estimate distances between the BS, the RS and the MS. Upon receipt of signals from the RS and the MS, the BS measures ToAs of the received signals and detects time information included in the received signals, and calculates propagation delays between the BS, the RS and the MS based on the ToAs and the time information. The BS estimates the distances between the BS, the RS and the MS using the propagation delays, and controls transmission power according to the estimated distances.

    摘要翻译： 提供了一种用于控制多跳中继宽带无线通信系统中的功率的装置和方法。 BS向RS和MS发送信号以估计BS，RS和MS之间的距离。 在接收到来自RS和MS的信号时，BS测量接收到的信号的ToAs并且检测包括在接收信号中的时间信息，并且基于ToAs和时间信息来计算BS，RS和MS之间的传播延迟 。 BS使用传播延迟估计BS，RS和MS之间的距离，并且根据估计的距离来控制发射功率。

    Apparatus and method for data transmission by constellation combination in a communication system
    6.
    发明申请
    Apparatus and method for data transmission by constellation combination in a communication system 审中-公开
    在通信系统中通过星座组合进行数据传输的装置和方法

    公开(公告)号：US20060120481A1

    公开(公告)日：2006-06-08

    申请号：US11295065

    申请日：2005-12-06

    申请人： Sung-Kwon Hong ,  Seung-Hoon Park ,  Dong-Seek Park ,  Young-Kwon Cho

    发明人： Sung-Kwon Hong ,  Seung-Hoon Park ,  Dong-Seek Park ,  Young-Kwon Cho

    IPC分类号： H04L27/36

    CPC分类号： H04L1/0003 ,  H04L1/0009 ,  H04L1/0059 ,  H04L1/0071

    摘要： Disclosed are an apparatus and a method for efficiently transmitting data by constellation combination in a communication system. The method includes encoding and interleaving transmission data according to a predetermined encoding scheme, and dividing an interleaved signal into at least one signal interval corresponding to at least one modulation scheme; and transmitting data obtained by modulating at least one divided signal interval according to a modulation scheme corresponding to the divided signal interval, the data satisfying a predetermined data rate setup in a system by applying a preset modulation scheme to each divided signal interval.

    摘要翻译： 公开了一种在通信系统中通过星座组合有效地发送数据的装置和方法。 该方法包括根据预定的编码方案对发送数据进行编码和交织，并且将交织的信号划分为与至少一个调制方案对应的至少一个信号间隔; 以及通过对每个划分的信号间隔应用预设的调制方案，发送通过根据对应于划分的信号间隔的调制方案调制至少一个划分的信号间隔获得的数据，所述数据满足系统中的预定数据速率设置。

    Apparatus and method for changing signal mapping rule in a hybrid automatic repeat request system
    10.
    发明申请
    Apparatus and method for changing signal mapping rule in a hybrid automatic repeat request system 审中-公开
    用于在混合自动重复请求系统中改变信号映射规则的装置和方法

    公开(公告)号：US20060036922A1

    公开(公告)日：2006-02-16

    申请号：US11204941

    申请日：2005-08-16

    申请人： Sung-Kwon Hong ,  Jung-Min Ro ,  Young-Kwon Cho ,  Young-Kyun Kim ,  Dong-Seek Park

    发明人： Sung-Kwon Hong ,  Jung-Min Ro ,  Young-Kwon Cho ,  Young-Kyun Kim ,  Dong-Seek Park

    IPC分类号： H04L1/18 ,  G08C25/02

    CPC分类号： H04L1/1893 ,  H04L1/0668 ,  H04L1/1607 ,  H04L1/1812

    摘要： An apparatus and method for changing a signal mapping rule in an hybrid automatic repeat request (HARQ) system are provided. In a transmitter in an automatic repeat request (ARQ) system according to the present invention, a memory stores different signal constellations for a predetermined modulation scheme according to retransmission numbers (k). A modulator reads a signal constellation according to a current retransmission number from the memory, upon receipt of a retransmission request signal from a receiver, and modulates transmission data to complex symbols on the signal constellation.

    摘要翻译： 提供了一种用于在混合自动重传请求（HARQ）系统中改变信号映射规则的装置和方法。 在根据本发明的自动重复请求（ARQ）系统的发射机中，存储器根据重传号（k）存储针对预定调制方案的不同信号星座。 调制器从接收机接收到重传请求信号时，根据来自存储器的当前重传次数读取信号星座图，并将发送数据调制到信号星座上的复数符号。