利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

37 条记录 (耗时 0.046 秒)

    Apparatus and method for controlling transmission/reception power by measuring propagation delay and processing time in a wireless communication system
    3.
    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 multiuser detection in CDMA communication system
    7.
    发明申请
    Apparatus and method for multiuser detection in CDMA communication system 有权
    CDMA通信系统中多用户检测的装置和方法

    公开(公告)号：US20070019712A1

    公开(公告)日：2007-01-25

    申请号：US11482801

    申请日：2006-07-10

    申请人： Kathiravetpillai Sivanesan ,  Marcos Katz ,  Chan-Byoung Chae

    发明人： Kathiravetpillai Sivanesan ,  Marcos Katz ,  Chan-Byoung Chae

    IPC分类号： H04B1/00

    CPC分类号： H04B1/71055 ,  H04B1/7093

    摘要： An apparatus and method for a multiuser receiver in a CDMA communication system are provided. The apparatus includes a plurality of White Matched Filters (WMFs) for pulse shaping received user signals, considering Multiple Access Interference (MAI), and a filter for detecting output signals of the WMFs using a Minimum Mean Square Error (MMSE) scheme, and outputting bit estimation values of the respective users. A transfer function of the WMF is determined by: adding a power spectral density function of the MAI to a power spectral density of an Additive White Gaussian Noise (AWGN); and multiplying an inverse number of the added value by a transfer function (H*(w)) of a Conventional Matched Filter (CMF). Accordingly, the SNIR can be maximized and thus the BER performance may be improved, without additional information, by using the filter in which the power spectral density of the MAI is added to the AWGN and then multiplied by the CMF function.

    摘要翻译： 提供了一种用于CDMA通信系统中的多用户接收机的装置和方法。 该装置包括多个白色匹配滤波器（WMF），用于考虑多址干扰（MAI）的接收用户信号的脉冲整形，以及用于使用最小均方误差（MMSE）方案检测WMF的输出信号的滤波器，并输出 各个用户的位估计值。 通过以下方式确定WMF的传递函数：将MAI的功率谱密度函数加到加性白高斯噪声（AWGN）的功率谱密度; 并将相加值的倒数乘以常规匹配滤波器（CMF）的传递函数（H *（w））。 因此，通过使用其中将MAI的功率谱密度添加到AWGN然后乘以CMF功能的滤波器，可以使SNIR最大化，从而可以提高BER性能，而无需附加信息。

    CLOSED LOOP FEEDBACK SYSTEM FOR IMPROVED DOWN LINK PERFORMANCE
    8.
    发明申请
    CLOSED LOOP FEEDBACK SYSTEM FOR IMPROVED DOWN LINK PERFORMANCE 有权
    闭环反馈系统，用于改善下行链路性能

    公开(公告)号：US20100322337A1

    公开(公告)日：2010-12-23

    申请号：US12872193

    申请日：2010-08-31

    申请人： Juha Ylitalo ,  Marcos Katz

    发明人： Juha Ylitalo ,  Marcos Katz

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0669 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0652 ,  H04L1/0618 ,  H04W52/42

    摘要： A method includes receiving at least two space-time coded signals from an antenna system associated with a first station, determining complex channel state information based on the received space-time coded signals, and sending the complex channel state information to the first station. In an alternative embodiment, a method includes transmitting at least two space-time coded signals in respective beams of a multi-beam antenna array, measuring a channel impulse response for each space-time coded signal at a second station, and sending an indicia of a selected set of least attenuated signals from the second station to the first station. The multi-beam antenna array is associated with a first station. The beams transmit a signature code embedded in each respective space-time coded signal, and the signature codes are orthogonal so that the second station can separate and measure the channel impulse response corresponding to each space-time coded signal.

    摘要翻译： 一种方法包括从与第一站相关联的天线系统接收至少两个时空编码信号，基于接收的空时编码信号确定复信道状态信息，以及将复信道状态信息发送到第一站。 在替代实施例中，一种方法包括在多波束天线阵列的各个波束中发送至少两个空时编码信号，在第二站测量每个空间 - 时间编码信号的信道脉冲响应，并发送 从第二站到第一站的选定的一组最小衰减信号。 多波束天线阵列与第一台相关联。 波束发送嵌入在每个相应的空时编码信号中的签名代码，并且签名代码是正交的，使得第二站可以分离并测量与每个空时编码信号相对应的信道脉冲响应。

    Method of transmitting data from a transmitter to a receiver, and a radio system
    9.
    发明授权
    Method of transmitting data from a transmitter to a receiver, and a radio system 失效
    从发射机向接收机发送数据的方法以及无线电系统

    公开(公告)号：US07286612B2

    公开(公告)日：2007-10-23

    申请号：US10184054

    申请日：2002-06-28

    申请人： Juha Ylitalo ,  Kari Horneman ,  Marcos Katz ,  Markku Juntti

    发明人： Juha Ylitalo ,  Kari Horneman ,  Marcos Katz ,  Markku Juntti

    IPC分类号： H04L27/00

    CPC分类号： H04L1/0048 ,  H04B7/0613

    摘要： The invention relates to a method of transmitting data from a transmitter to a receiver in a radio system, and to a radio system. The method includes the following: channel-coding the data using selected channel-coding; dividing the channel-coded non-interleaved data into signals with different contents, to be transmitted via at least two different transmitter antennas; providing the signal to be transmitted via each transmitter antenna with an identifier, by means of which identifier the signals transmitted via different transmitter antennas are distinguishable from each other in the receiver; transmitting the signals to the receiver using different transmitter antennas; detecting the signal transmitted via each transmitter antenna with a receiver receiving each transmitter antenna in the receiver, and combining the detected signals into received channel-coded non-interleaved data; decoding the channel-coding of the received channel-coded non-interleaved data; and the receiver attenuating interference utilizing the decoded data.

    摘要翻译： 本发明涉及一种从无线电系统中的发射机向接收机发送数据的方法和无线电系统。 该方法包括：使用选择的信道编码对数据进行信道编码; 将信道编码的非交织数据划分为具有不同内容的信号，以经由至少两个不同的发射机天线发射; 通过每个发射机天线提供具有标识符的信号，通过该标识符，经由不同发射机天线发送的信号在接收机中彼此区分; 使用不同的发射机天线将信号发射到接收机; 通过接收机接收每个发射机天线的接收机检测经由每个发射机天线发射的信号，并将检测到的信号组合成接收的信道编码非交织数据; 解码所接收的信道编码非交织数据的信道编码; 并且接收机利用解码数据衰减干扰。

    Method of directional radio communication
    10.
    发明授权
    Method of directional radio communication 有权
    定向无线电通信方法

    公开(公告)号：US07072692B1

    公开(公告)日：2006-07-04

    申请号：US10018161

    申请日：1999-09-14

    申请人： Marcos Katz ,  Juha T Ylitalo

    发明人： Marcos Katz ,  Juha T Ylitalo

    IPC分类号： H04Q7/20

    CPC分类号： H04W16/28 ,  H04B7/0608 ,  H04W16/00 ,  H04W16/24

    摘要： A method of directional radio communication between a first station and a second station, the method comprising the steps of defining at the first station a plurality of beam directions available for transmitting successive signals from the first station, selecting at said first station at least one of said directions for transmission of a signal from said first station to said second station, wherein the selection of the at least one direction for transmission is such that successive signals or groups of signals are transmitted in substantially different directions and such that on average each beam direction available to said first station is used substantially equally.

    摘要翻译： 一种在第一站和第二站之间的定向无线电通信的方法，所述方法包括以下步骤：在第一站定义可用于从第一站发送连续信号的多个波束方向，在所述第一站点选择以下各项中的至少一个： 所述方向用于将信号从所述第一站传输到所述第二站，其中所述至少一个传输方向的选择使得连续信号或信号组以基本上不同的方向传输，并且平均每个波束方向 对所述第一站可用的基本上相同。