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    Power amplifier pre-distortion
    72.
    发明授权
    Power amplifier pre-distortion 有权
    功率放大器预失真

    公开(公告)号：US08618880B2

    公开(公告)日：2013-12-31

    申请号：US13620463

    申请日：2012-09-14

    申请人： Christopher Young ,  Elias Simpson

    发明人： Christopher Young ,  Elias Simpson

    IPC分类号： H03F1/26

    CPC分类号： H03F1/3247 ,  H03F3/24 ,  H03F3/68 ,  H03F2200/451 ,  H03F2200/468 ,  H03F2201/3233

    摘要： The present invention is directed to systems and methods for reducing the distortion of power amplifiers. In particular, methods and systems are described that enable a determination of a pre-distortion correction signal to be determined, which when added to the nominal signal, a reduction in the distortion of the power amplifier results. In addition, methods and systems are described that enable calibration of individual power amplifiers to be accomplished for use with the above described approach. More specifically, the methods and systems are described for use in a MIMO application. These approaches may be applied to on-chip power amplifiers, off-chip power amplifiers, or any combination thereof.

    摘要翻译： 本发明涉及用于减少功率放大器失真的系统和方法。 特别地，描述了使得能够确定要被确定的预失真校正信号的方法和系统，其在添加到标称信号时降低功率放大器结果的失真。 此外，描述了使得能够实现与上述方法一起使用的各个功率放大器的校准的方法和系统。 更具体地，描述了在MIMO应用中使用的方法和系统。 这些方法可以应用于片上功率放大器，片外功率放大器或其任何组合。

    Method and system for multi-antenna preambles for wireless networks preserving backward compatibility
    73.
    发明授权
    Method and system for multi-antenna preambles for wireless networks preserving backward compatibility 有权
    用于无线网络的多天线前导码的方法和系统保持向后兼容性

    公开(公告)号：US08000223B2

    公开(公告)日：2011-08-16

    申请号：US11021266

    申请日：2004-12-23

    申请人： Rajendra Tushar Moorti ,  Christopher Young ,  Carlos Aldana

    发明人： Rajendra Tushar Moorti ,  Christopher Young ,  Carlos Aldana

    IPC分类号： H04J11/00

    CPC分类号： H04B1/7075

    摘要： Methods and systems for processing multiple preambles for a wireless signal are disclosed herein. Aspects of the method may comprise selecting a portion of a preamble, and shifting the selected portion of the preamble to generate a plurality of subsequent preambles. The preamble may comprise a legacy preamble and/or an 802.11(n) preamble. The selected portion of the preamble may comprise a short training sequence. The shifting may comprise circular shifting. The circular shifting may comprise forward circular shifting and/or backwards circular shifting. The generated plurality of subsequent preambles may be transmitted via a plurality of antennas. A phase roll may be added to the selected portion of the preamble to generate the plurality of subsequent preambles.

    摘要翻译： 本文公开了用于处理无线信号的多个前同步码的方法和系统。 方法的方面可以包括选择前导码的一部分，以及移动所述前导码的所选部分以生成多个后续前导码。 前导码可以包括传统前导码和/或802.11（n）前导码。 前导码的所选部分可以包括短训练序列。 移位可以包括循环移位。 圆形切换可以包括向前圆形移位和/或向后循环移位。 所生成的多个后续前导码可以经由多个天线发送。 相位卷可以被添加到前导码的选定部分以生成多个后续前导码。

    Mixed mode preamble for MIMO wireless communications
    74.
    发明授权
    Mixed mode preamble for MIMO wireless communications 有权
    用于MIMO无线通信的混合模式前导码

    公开(公告)号：US07826547B2

    公开(公告)日：2010-11-02

    申请号：US11079962

    申请日：2005-03-15

    申请人： Christopher J. Hansen ,  Jason A. Trachewsky ,  R. Tushar Moorti ,  Christopher Young

    发明人： Christopher J. Hansen ,  Jason A. Trachewsky ,  R. Tushar Moorti ,  Christopher Young

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0613

    摘要： A preamble of a frame for a multiple input multiple output (MIMO) wireless communication for a first transmit antenna of the MIMO communication includes a legacy preamble portion in accordance with a legacy wireless communication protocol. The preamble of the frame for the MIMO wireless communication for the first transmit antenna also includes a current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. The preamble of a frame for at least a second antenna of the MIMO communication includes a cyclically shifted legacy preamble portion for the frame. The preamble of the frame for the MIMO wireless communication for the second transmit antenna also includes a second current protocol preamble portion in accordance with a protocol of the MIMO wireless communication.

    摘要翻译： 用于MIMO通信的第一发射天线的多输入多输出（MIMO）无线通信的帧的前导码包括根据传统无线通信协议的传统前导码部分。 用于第一发射天线的MIMO无线通信的帧的前导码还包括根据MIMO无线通信的协议的当前协议前同步码部分。 用于MIMO通信的至少第二天线的帧的前导码包括用于该帧的循环移位的传统前同步码部分。 用于第二发射天线的MIMO无线通信的帧的前导码还包括根据MIMO无线通信的协议的第二当前协议前同步码部分。

    MIMO wireless communication greenfield preamble formats
    76.
    发明授权
    MIMO wireless communication greenfield preamble formats 有权
    MIMO无线通信绿田前置码格式

    公开(公告)号：US07586881B2

    公开(公告)日：2009-09-08

    申请号：US10973212

    申请日：2004-10-26

    申请人： Christopher J. Hansen ,  Jason A. Trachewsky ,  R. Tushar Moorti ,  Matthew J. Fischer ,  Christopher Young

    发明人： Christopher J. Hansen ,  Jason A. Trachewsky ,  R. Tushar Moorti ,  Matthew J. Fischer ,  Christopher Young

    IPC分类号： H04Q7/00

    CPC分类号： H04W72/044 ,  H04L1/0001 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/06 ,  H04L1/1867 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2613 ,  H04W84/12

    摘要： A method for multiple input multiple output wireless communication begins by determining protocols of wireless communication devices within the proximal region. The method continues by determining whether the protocols of the wireless communication devices within a proximal region are of a like protocol. The method continues by determining the a number of transmit antennas. The method continues, when the protocols of the wireless communication devices within a proximal region are of the like protocol, formatting preamble of a frame of a wireless communication utilizing at least one of cyclic shifting of symbols, cyclic shifting of tones, sparse tone allocation, and sparse symbol allocation based on the number of transmit antennas.

    摘要翻译： 用于多输入多输出无线通信的方法通过确定近端区域内的无线通信设备的协议来开始。 该方法通过确定近端区域内的无线通信设备的协议是否具有类似协议来继续。 该方法通过确定多个发射天线来继续。 该方法继续，当近端区域内的无线通信设备的协议类似协议时，使用符号的循环移位，音调的循环移位，稀疏音分配等的格式化无线通信的帧的前导码， 和基于发射天线数量的稀疏符号分配。

    SYSTEM AND METHOD FOR ASSEMBLING A DATA PACKET
    78.
    发明申请
    SYSTEM AND METHOD FOR ASSEMBLING A DATA PACKET 有权
    用于组装数据包的系统和方法

    公开(公告)号：US20080049774A1

    公开(公告)日：2008-02-28

    申请号：US11924500

    申请日：2007-10-25

    申请人： Erik Swenson ,  Christopher Young

    发明人： Erik Swenson ,  Christopher Young

    IPC分类号： H04L12/56

    CPC分类号： H04L49/30 ,  H04L45/7453 ,  H04L45/7457

    摘要： Disclosed is a system and method for assembling a data packet. The system can be implemented as four memory elements associated with one or more processors. The first memory element stores a sequence number and a sub-channel identifier for an incoming data packet. The second memory element stores a revised packet fragment. The third memory element stores an unrevised packet fragment. The fourth memory element stores a starting address. In the system, the starting address may be the starting address of the revised packet fragment or the unrevised packet fragment wherein the first memory element identifies portions of the fourth memory element associated with the sequence number. The one or more processors are configured to create a modified data packet by combining the unrevised packet fragments and the revised packet fragment, wherein the modified data packet is associated with the sequence number and sub-channel identifier.

    摘要翻译： 公开了一种用于组装数据分组的系统和方法。 该系统可以被实现为与一个或多个处理器相关联的四个存储器元件。 第一存储器元件存储用于输入数据分组的序列号和子信道标识符。 第二存储器元件存储经修改的分组片段。 第三存储器元件存储未修改的分组片段。 第四存储元件存储起始地址。 在系统中，起始地址可以是经修改的分组片段或未修改分组片段的起始地址，其中第一存储器元素标识与序列号相关联的第四存储器元件的部分。 一个或多个处理器被配置为通过组合未修改的分组片段和经修改的分组片段来创建修改的数据分组，其中修改的数据分组与序列号和子频道标识符相关联。

    RF transceiver configuring for a MIMO communication
    79.
    发明申请
    RF transceiver configuring for a MIMO communication 失效
    RF收发器配置用于MIMO通信

    公开(公告)号：US20070206519A1

    公开(公告)日：2007-09-06

    申请号：US11800547

    申请日：2007-05-07

    申请人： Christopher Hansen ,  Jason Trachewsky ,  R. Moorti ,  Matthew Fischer ,  Christopher Young

    发明人： Christopher Hansen ,  Jason Trachewsky ,  R. Moorti ,  Matthew Fischer ,  Christopher Young

    IPC分类号： H04B7/00

    CPC分类号： H04B7/0613

    摘要： An RF transceiver includes a baseband processing module, a transmitter section, and a receiver section. The baseband processing module convert outbound data into a plurality of outbound symbol streams, wherein each of the plurality of outbound symbol streams is outputted as one or more frames, wherein a frame of the one or more frames includes a setup portion and a data portion, wherein the set up portion includes at least one of a training sequence field and a signal field, and wherein the set up portion is formatted in accordance with one of a plurality of protocols. The baseband processing module further converts a plurality of inbound symbol streams into inbound data. The transmitter section converts the plurality of the outbound symbol streams into a plurality of outbound RF signals. The receiver section converts a plurality of inbound RF signals into the plurality of inbound symbol streams.

    摘要翻译： RF收发器包括基带处理模块，发送器部分和接收器部分。 基带处理模块将出站数据转换为多个出站符号流，其中多个出站符号流中的每一个作为一个或多个帧输出，其中一个或多个帧的帧包括建立部分和数据部分， 其中所述设置部分包括训练序列字段和信号字段中的至少一个，并且其中所述设置部分根据多个协议之一进行格式化。 基带处理模块还将多个入站符号流转换成入站数据。 发射机部分将多个出站符号流转换成多个出站RF信号。 接收机部分将多个入站RF信号转换成多个入站符号流。

    Method and system for multiple input multiple output (MIMO) channel estimation
    80.
    发明申请
    Method and system for multiple input multiple output (MIMO) channel estimation 审中-公开
    多输入多输出（MIMO）信道估计的方法和系统

    公开(公告)号：US20070064828A1

    公开(公告)日：2007-03-22

    申请号：US11187495

    申请日：2005-07-22

    申请人： Carlos Aldana ,  Rajendra Moorti ,  Christopher Young

    发明人： Carlos Aldana ,  Rajendra Moorti ,  Christopher Young

    IPC分类号： H04L1/02

    CPC分类号： H04L1/0656 ,  H04L1/0071 ,  H04L25/0208 ,  H04L25/0212 ,  H04L25/0242

    摘要： Various aspects of a method for and system for multiple input multiple output (MIMO) channel estimation are presented. Aspects of a method for computing channel estimates in a radio frequency (RF) communications system may comprise decomposing a direct matrix computation into a plurality of constituent matrices, and jointly computing a plurality of channel estimates for a corresponding plurality of channel estimate streams received via a plurality of RF channels based on at least a portion of the plurality of constituent matrices. Aspects of a system for computing channel estimates in an RF communications system may comprise a receiver that decomposes a direct matrix computation into a plurality of constituent matrices, and jointly computes a plurality of channel estimates for a corresponding plurality of channel estimate streams received via a plurality of RF channels based on at least a portion of the plurality of constituent matrices.

    摘要翻译： 提出了多输入多输出（MIMO）信道估计的方法和系统的各个方面。 用于计算射频（RF）通信系统中的信道估计的方法的方面可以包括将直接矩阵计算分解为多个构成矩阵，并且共同计算经由以下各项接收的相应多个信道估计流的多个信道估计： 基于多个构成矩阵的至少一部分的多个RF信道。 用于在RF通信系统中计算信道估计的系统的方面可以包括将直接矩阵计算分解为多个构成矩阵的接收机，并且共同计算经由多个接收的相应多个信道估计流的多个信道估计 基于所述多个构成矩阵的至少一部分的RF信道。