利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

30 条记录 (耗时 0.02 秒)

    Scalable time-orthogonal preamble supplement generator, method of generating and multiple-input, multiple-output communication system employing the generator and method
    1.
    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。

    Low overhead transmit channel estimation
    2.
    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。

    Time-switched preamble generator, method of generating and multiple-input, multiple-output communication system employing the generator and method
    4.
    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
    5.
    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
    6.
    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

    Time-switched preamble generation to enhance channel estimation signal-to-noise ratio in MIMO communication systems
    8.
    发明申请
    Time-switched preamble generation to enhance channel estimation signal-to-noise ratio in MIMO communication systems 审中-公开
    时间切换前导码生成，以增强MIMO通信系统中的信道估计信噪比

    公开(公告)号：US20060104380A1

    公开(公告)日：2006-05-18

    申请号：US10992403

    申请日：2004-11-17

    申请人： David Magee ,  Manish Goel ,  Michael DiRenzo ,  Michael Polley

    发明人： David Magee ,  Manish Goel ,  Michael DiRenzo ,  Michael Polley

    IPC分类号： H04B7/02 ,  H04B7/06

    CPC分类号： H04L25/0204 ,  H04B7/04 ,  H04B7/0619 ,  H04L25/0226 ,  H04L27/2626 ,  H04L27/2647

    摘要： The present invention provides a channel estimate enhancer for use with a multiple-input, multiple-output (MIMO) transmitter employing N transmit antennas, where N is at least two. In one embodiment, the channel estimate enhancer includes a first preamble generator that produces a basic preamble configured to provide gain training and channel estimation sequences to one of the N transmit antennas during initial time intervals. Additionally, the channel estimate enhancer also includes a second preamble generator, coupled to the first preamble generator, that produces supplementary preambles configured to provide a set of gain enhancing channel estimation sequences to each of (N−1) remaining transmit antennas during (N−1) corresponding sets of subsequent time intervals.

    摘要翻译： 本发明提供一种与采用N个发射天线的多输入多输出（MIMO）发射机一起使用的信道估计增强器，其中N是至少两个。 在一个实施例中，信道估计增强器包括第一前导码生成器，其产生配置成在初始时间间隔期间向N个发射天线之一提供增益训练和信道估计序列的基本前同步码。 另外，信道估计增强器还包括耦合到第一前导码生成器的第二前导码生成器，其产生补充前导码，其被配置为在（N-1）期间向（N-1）个剩余发射天线中的每一个提供一组增益增强信道估计序列， 1）相应的后续时间间隔集。

    Scalable gain retraining generator, method of gain retraining and multiple-input, multiple-output communications system employing the generator or method
    9.
    发明申请
    Scalable gain retraining generator, method of gain retraining and multiple-input, multiple-output communications system employing the generator or method 审中-公开
    可扩展增益再培训发电机，增益再培训方法和多输入多输出通信系统采用发电机或方法

    公开(公告)号：US20060072681A1

    公开(公告)日：2006-04-06

    申请号：US10956406

    申请日：2004-10-01

    申请人： Manish Goel ,  Michael DiRenzo ,  David Magee

    发明人： Manish Goel ,  Michael DiRenzo ,  David Magee

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0413

    摘要： The present invention provides a gain retraining generator for use with a MIMO transmitter employing N transmit antennas, where N is at least two. In one embodiment, the gain retraining generator includes a first sequence encoder configured to provide a gain retraining sequence to one of the N transmit antennas during a non-initial time interval. The gain retraining generator also includes a second sequence encoder coupled to the first sequence encoder and configured to further provide (N-1) alternative gain retraining sequences to (N-1) remaining transmit antennas, respectively, during the non-initial time interval to retrain receive gains for multiple concurrent data transmissions.

    摘要翻译： 本发明提供了一种与使用N个发射天线的MIMO发射机一起使用的增益再训练发生器，其中N是至少两个。 在一个实施例中，增益再培训发生器包括第一序列编码器，其被配置为在非初始时间间隔期间向N个发射天线之一提供增益再训练序列。 增益再培训发生器还包括耦合到第一序列编码器的第二序列编码器，并且被配置为在非初始时间间隔期间进一步向（N-1）个剩余发射天线提供（N-1）替代增益再训练序列， 重新训练接收多个并行数据传输的增益。

    Method of synchronization for packet based, OFDM wireless systems with multiple receive chains
    10.
    发明申请
    Method of synchronization for packet based, OFDM wireless systems with multiple receive chains 有权
    具有多个接收链的基于分组的OFDM无线系统的同步方法

    公开(公告)号：US20050271174A1

    公开(公告)日：2005-12-08

    申请号：US10974578

    申请日：2004-10-27

    申请人： Michael DiRenzo ,  David Magee ,  Manish Goel

    发明人： Michael DiRenzo ,  David Magee ,  Manish Goel

    IPC分类号： H04L1/06 ,  H04L7/00 ,  H04L7/04 ,  H04L7/10 ,  H04L27/26

    CPC分类号： H04L7/042 ,  H04L1/06 ,  H04L7/10 ,  H04L27/2662 ,  H04L27/2675

    摘要： A system for synchronizing a wireless receiver is provided. The system includes a first antenna (101a) and a second antenna (101b) to receive wireless signals containing data packets. The system includes one or more analyzer components (156) operable to determine correlation metrics based on at least a portion of the first received signal and a portion of the second received signal. The system further includes a synchronization component (158) operable to use the correlation metrics to determine a preferred correlation metric for synchronization by the wireless receiver of the first and second received signals to decode the data packet. A method for synchronizing a receiver of two wireless signals is also provided.

    摘要翻译： 提供了一种用于同步无线接收机的系统。 该系统包括用于接收包含数据分组的无线信号的第一天线（101a）和第二天线（101b）。 系统包括一个或多个分析器组件（156），其可操作以基于第一接收信号的至少一部分和第二接收信号的一部分来确定相关度量。 所述系统还包括同步组件（158），其可操作以使用所述相关度量来确定所述无线接收机对所述第一和第二接收信号进行同步的优选相关度量，以对所述数据分组进行解码。 还提供了一种用于同步两个无线信号的接收机的方法。