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162 条记录 (耗时 0.037 秒)

    Low overhead transmit channel estimation
    1.
    发明申请
    Low overhead transmit channel estimation 有权
    低开销传输信道估计

    公开(公告)号：US20050124297A1

    公开(公告)日：2005-06-09

    申请号：US10730242

    申请日：2003-12-05

    申请人： Henry Eilts ,  Srinath Hosur ,  David Magee

    发明人： Henry Eilts ,  Srinath Hosur ,  David Magee

    IPC分类号： H04L25/02 ,  H04Q7/20

    CPC分类号： H04L25/0202

    摘要： A transmit channel (gt1, h, gr2) through which a first wireless communication transceiver is to transmit to a second wireless communication transceiver can be estimated using information indicative of a relationship between the transmit channel and a receive channel (gt2, h, gr1) through which the first wireless communication transceiver receives communications from the second wireless communication transceiver. The relationship information (35) is combined (37) with further information (31) to produce an estimate of the transmit channel.

    摘要翻译： 可以使用表示第一无线通信收发器的信息的信息来估计第一无线通信收发器要向第二无线通信收发器发送的发送信道（g t1，h，g t2，h，g ）。 关系信息（35）与另外的信息（31）组合（37）以产生发送信道的估计。

    Method for calibrating automatic gain control in wireless devices
    2.
    发明申请
    Method for calibrating automatic gain control in wireless devices 有权
    校准无线设备自动增益控制的方法

    公开(公告)号：US20050009483A1

    公开(公告)日：2005-01-13

    申请号：US10735380

    申请日：2003-12-12

    申请人： Henry Eilts ,  Srinath Hosur

    发明人： Henry Eilts ,  Srinath Hosur

    IPC分类号： H04B17/40 ,  H04B7/005 ,  H04B7/00 ,  H04B1/06

    CPC分类号： H04W52/52

    摘要： Disclosed herein is an iterative process for calibrating an AGC in a wireless system, wherein the iterative process comprises transmitting a calibration signal, receiving the calibration signal, decoding the calibration signal to produce a measurement, storing the measurement and changing an AGC gain setting.

    摘要翻译： 这里公开了一种用于校准无线系统中的AGC的迭代过程，其中迭代过程包括发送校准信号，接收校准信号，解码校准信号以产生测量值，存储测量值并改变AGC增益设置。

    Method for Calibrating Automatic Gain Control in Wireless Devices
    3.
    发明申请
    Method for Calibrating Automatic Gain Control in Wireless Devices 有权
    无线设备自动增益控制校准方法

    公开(公告)号：US20080096500A1

    公开(公告)日：2008-04-24

    申请号：US11962389

    申请日：2007-12-21

    申请人： Henry Eilts ,  Srinath Hosur

    发明人： Henry Eilts ,  Srinath Hosur

    IPC分类号： H04B7/00

    CPC分类号： H04W52/52

    摘要： Disclosed herein is an iterative process for calibrating an AGC in a wireless system, wherein the iterative process comprises transmitting a calibration signal, receiving the calibration signal, decoding the calibration signal to produce a measurement, storing the measurement and changing an AGC gain setting.

    摘要翻译： 这里公开了一种用于校准无线系统中的AGC的迭代过程，其中迭代过程包括发送校准信号，接收校准信号，解码校准信号以产生测量值，存储测量值并改变AGC增益设置。

    Scalable time-orthogonal preamble supplement generator, method of generating and multiple-input, multiple-output communication system employing the generator and method
    4.
    发明申请
    Scalable time-orthogonal preamble supplement generator, method of generating and multiple-input, multiple-output communication system employing the generator and method 有权
    可扩展时间正交前导码补充生成器，生成和多输入方法，采用发生器和方法的多输出通信系统

    公开(公告)号：US20060008023A1

    公开(公告)日：2006-01-12

    申请号：US10886480

    申请日：2004-07-07

    申请人： David Magee ,  Srinath Hosur

    发明人： David Magee ,  Srinath Hosur

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0413 ,  H04B7/10 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2613

    摘要： The present invention provides a time-orthogonal preamble supplement generator for use with a multiple-input, multiple-output (MIMO) transmitter employing N transmit antennas, where N is at least two. In one embodiment, the time-orthogonal preamble supplement generator includes an initial preamble supplement encoder configured to provide a preamble supplement to each of the N transmit antennas during an initial time interval. The time-orthogonal preamble supplement generator also includes a subsequent preamble supplement encoder coupled to the initial preamble supplement encoder and configured to provide the preamble supplement or a negation thereof to the N transmit antennas during (N-1) subsequent time intervals.

    摘要翻译： 本发明提供了一种与采用N个发射天线的多输入多输出（MIMO）发射机一起使用的时间正交前导码补充生成器，其中N是至少两个。 在一个实施例中，时间正交前导码补充生成器包括初始前导码补充编码器，其被配置为在初始时间间隔期间向N个发射天线中的每一个提供前导码补充。 时间正交前导码补充生成器还包括耦合到初始前导码补充编码器并被配置为在（N-1）个后续时间间隔期间向N个发送天线提供前导补充或否定的后续前导码补充编码器。

    Time-switched preamble generator, method of generating and multiple-input, multiple-output communication system employing the generator and method
    6.
    发明申请
    Time-switched preamble generator, method of generating and multiple-input, multiple-output communication system employing the generator and method 有权
    时间切换前导码生成器，生成和多输入方法，采用发生器和方法的多输出通信系统

    公开(公告)号：US20050153723A1

    公开(公告)日：2005-07-14

    申请号：US10755603

    申请日：2004-01-12

    申请人： Srinath Hosur ,  Srikanth Gummadi ,  Anuj Batra ,  David Magee

    发明人： Srinath Hosur ,  Srikanth Gummadi ,  Anuj Batra ,  David Magee

    IPC分类号： H04W88/08 ,  H04Q7/00

    CPC分类号： H04W88/08

    摘要： The present invention is directed to a time-switched preamble generator and method of generating a time-switched preamble for use with a multiple-input, multiple-output (MIMO) transmitter employing first and second transmit antennas. In one embodiment, the time-switched preamble generator includes an initial preamble formatter configured to provide a first preamble to the first transmit antenna and a second preamble to the second transmit antenna during an initial time interval. The time-switched preamble generator also includes a subsequent preamble formatter coupled to the initial preamble formatter and configured to provide the second preamble to the first transmit antenna and the first preamble to the second transmit antenna during a subsequent time interval.

    摘要翻译： 本发明涉及一种时间切换前导码生成器和用于与采用第一和第二发射天线的多输入多输出（MIMO）发射机一起使用的时间切换前同步码的方法。 在一个实施例中，时间切换前导码生成器包括初始前同步码格式器，其被配置为在初始时间间隔期间向第一发射天线提供第一前同步码和第二前导码到第二发射天线。 时间切换前导码生成器还包括后续前导码格式器，其耦合到初始前导码格式化器并且被配置为在随后的时间间隔期间向第一发射天线提供第二前同步码和第一前导码到第二发射天线。

    Channel estimator for a receiver and method of operation thereof
    7.
    发明申请
    Channel estimator for a receiver and method of operation thereof 审中-公开
    用于接收机的信道估计器及其操作方法

    公开(公告)号：US20050073947A1

    公开(公告)日：2005-04-07

    申请号：US10677605

    申请日：2003-10-02

    申请人： Sourav Dey ,  David Magee ,  Srinath Hosur

    发明人： Sourav Dey ,  David Magee ,  Srinath Hosur

    IPC分类号： H04L12/28 ,  H04L25/02 ,  H04L27/26 ,  H04J1/16

    CPC分类号： H04L25/0218 ,  H04L27/2647 ,  H04W84/12

    摘要： For use with an orthogonal frequency division multiplexing (OFDM) receiver, the present invention discloses a channel estimator that employs a training sequence received through a channel. In one embodiment, the channel estimator includes a response assesser and a reducer. The response assesser computes a channel impulse response of the channel in a time-domain based on the training sequence. The reducer, coupled to the response assesser, sets designated taps associated with the channel impulse response to substantially zero.

    摘要翻译： 为了与正交频分复用（OFDM）接收机一起使用，本发明公开了一种采用通过信道接收的训练序列的信道估计器。 在一个实施例中，信道估计器包括响应评估器和减速器。 响应评估器基于训练序列计算信道在时域中的信道脉冲响应。 耦合到响应评估器的减速器将与信道脉冲响应相关联的指定抽头设置为基本为零。

    Scalable time-switched preamble supplment generator, method of generating and multiple-input, multiple-output communication system employig the generator and method
    8.
    发明申请
    Scalable time-switched preamble supplment generator, method of generating and multiple-input, multiple-output communication system employig the generator and method 有权
    可扩展的时间切换前导码提供发生器，生成和多输入的方法，多输出通信系统采用发生器和方法

    公开(公告)号：US20060023804A1

    公开(公告)日：2006-02-02

    申请号：US10903668

    申请日：2004-07-30

    申请人： David Magee ,  Srinath Hosur ,  Michael Polley ,  Srikanth Gummadi

    发明人： David Magee ,  Srinath Hosur ,  Michael Polley ,  Srikanth Gummadi

    IPC分类号： H04B7/02

    CPC分类号： H04B7/04 ,  H04B7/0669 ,  H04B7/0671

    摘要： The present invention provides a time-switched preamble supplement generator for use with a multiple-input, multiple-output (MIMO) transmitter employing N transmit antennas wherein N is at least two. In one embodiment, the time-switched preamble supplement generator includes an initial preamble supplement formatter configured to provide a first permutation of a set of preamble supplements to the N transmit antennas during an initial time interval. The first permutation includes a single first preamble supplement and at least one second preamble supplement. The time-switched preamble supplement generator also includes a subsequent preamble supplement formatter coupled to the initial preamble supplement formatter and configured to provide (N-1) mutually exclusive further permutations of the set to the N transmit antennas during (N-1) subsequent time intervals.

    摘要翻译： 本发明提供了一种与使用N个发射天线的多输入多输出（MIMO）发射机一起使用的时间切换前导码补充生成器，其中N是至少两个。 在一个实施例中，时间切换前导码补充生成器包括初始前导码补充格式化器，被配置为在初始时间间隔期间向N个发射天线提供一组前导码补充的第一置换。 第一排列包括单个第一前序补码和至少一个第二前序补码。 所述时间切换前导码补充生成器还包括后续前导码补充格式化器，其耦合到所述初始前导码补充格式器，并且被配置为在（N-1）个后续时间期间向所述N个发射天线提供所述集合的（N-1）个互斥另外的排列 间隔

    Wireless networks utilizing multiple modulations
    10.
    发明授权
    Wireless networks utilizing multiple modulations 有权

    公开(公告)号：US09900193B2

    公开(公告)日：2018-02-20

    申请号：US13566639

    申请日：2012-08-03

    申请人： Timothy Mark Schmidl ,  Srinath Hosur ,  Anuj Batra

    发明人： Timothy Mark Schmidl ,  Srinath Hosur ,  Anuj Batra

    IPC分类号： H04L27/00 ,  H04L27/26

    CPC分类号： H04L27/0012 ,  H04L27/2613

    摘要： A method of communicating in a wireless network including a plurality of nodes having communications devices including a first node, wherein at least one node utilizes a first physical layer (PHY) modulation, and at least one other node utilizes a second PHY modulation different from the first PHY modulation. The first node receives a PHY frame transmitted by one of the plurality of nodes, and identifies a PHY modulation type selected from the first PHY modulation and the second PHY modulation used in the PHY frame or to be used in a subsequently to be received PHY frame or frame portion. The first node decodes the PHY frame or the subsequently to be received PHY frame or frame portion using the PHY modulation type identified in the identifying step.