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    Adaptive AGC in a wireless network receiver
    1.
    发明授权
    Adaptive AGC in a wireless network receiver 有权
    无线网络接收机中的自适应AGC

    公开(公告)号：US07668523B2

    公开(公告)日：2010-02-23

    申请号：US11672132

    申请日：2007-02-07

    申请人： Andrew R. Adams ,  Philip J. Ryan ,  Brian Hart

    发明人： Andrew R. Adams ,  Philip J. Ryan ,  Brian Hart

    IPC分类号： H04B1/16

    CPC分类号： H04W52/52 ,  H03G3/3068

    摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method for controlling the gain of a radio receiver for receiving packets of information in a wireless network. The receiver is connected to an antenna subsystem and has receive signal path including a plurality of sections including a first section coupled to the antenna subsystem and a next section. Each section has an adjustable gain and is able to provide a measure of the signal strength at its output. The method includes waiting for a start of packet indication, providing a measure of the signal strength at the output of the first section and the next section, and adjusting the gains of the first and the next sections using the provided measured signal strengths. In one embodiment, the receive signal path includes a filter, the provided measure for the first section is before the filter, and the provided measure for the second section is after the filter. The gain adjusting sets first section's gain according to the measured signal strength at the output of the first section and sets the next section's gain according to the provided measure of signal strength at the output of the next section relative to the provided measure of signal strength at the output of the first section. In one embodiment, the gain adjusting o is carried out in sequential AGC stages, one stage setting the gain of one or more sections.

    摘要翻译： 存储用于实现方法的指令的装置，载体介质以及用于控制无线电接收机的增益的方法，用于在无线网络中接收信息分组。 接收机连接到天线子系统，并且具有包括多个部分的接收信号路径，所述多个部分包括耦合到天线子系统的第一部分和下一部分。 每个部分都有一个可调节的增益，能够提供其输出信号强度的测量。 该方法包括等待分组指示的开始，提供在第一部分和下一部分的输出处的信号强度的测量，以及使用所提供的测量信号强度来调整第一和下一个部分的增益。 在一个实施例中，接收信号路径包括滤波器，所提供的第一部分的测量在滤波器之前，并且所提供的第二部分的测量值在滤波器之后。 增益调整根据第一部分输出端的测量信号强度设置第一部分的增益，并根据提供的下一部分输出端的信号强度相对于所提供的信号强度测量值来设置下一部分的增益 第一部分的输出。 在一个实施例中，增益调整o在连续AGC阶段中执行，一个阶段设置一个或多个部分的增益。

    Automatic gain control and low power start-of-packet detection for a wireless LAN receiver
    2.
    发明授权
    Automatic gain control and low power start-of-packet detection for a wireless LAN receiver 有权
    无线LAN接收机的自动增益控制和低功率启动包检测

    公开(公告)号：US07304969B2

    公开(公告)日：2007-12-04

    申请号：US11557728

    申请日：2006-11-08

    申请人： Philip J. Ryan ,  Andrew R. Adams ,  John D. O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz B. Zyner

    发明人： Philip J. Ryan ,  Andrew R. Adams ,  John D. O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz B. Zyner

    IPC分类号： H04Q7/00

    CPC分类号： H03G3/3078

    摘要： A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dynamic range. The AGC system includes estimating the power in a received signal by averaging the log of the signal power. The Start of Packet detection avoids using the radio receiver's main analog to digital converters to preserve power.

    摘要翻译： 一种用于突发操作的数字AGC系统，特别适用于在无线局域网中接收分组。 一个实施例包括在宽动态范围内提供称为接收信号强度指示（RSSI）的信号强度测量的对数检测器。 AGC系统包括通过对信号功率的对数求平均来估计接收信号中的功率。 分组检测的开始避免使用无线电接收机的主要模数转换器来保持功率。

    Automatic gain control and low power start-of-packet detection for a wireless LAN receiver
    3.
    发明授权
    Automatic gain control and low power start-of-packet detection for a wireless LAN receiver 有权
    无线LAN接收机的自动增益控制和低功率启动包检测

    公开(公告)号：US07151759B1

    公开(公告)日：2006-12-19

    申请号：US10095668

    申请日：2002-03-08

    申请人： Philip J. Ryan ,  Andrew R. Adams ,  John D. O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz B. Zyner

    发明人： Philip J. Ryan ,  Andrew R. Adams ,  John D. O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz B. Zyner

    IPC分类号： H04Q7/00

    CPC分类号： H03G3/3078

    摘要： A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dynamic range. The AGC system includes estimating the power in a received signal by averaging the log of the signal power. The Start of Packet detection avoids using the radio receiver's main analog to digital converters to preserve power.

    摘要翻译： 一种用于突发操作的数字AGC系统，特别适用于在无线局域网中接收分组。 一个实施例包括在宽动态范围内提供称为接收信号强度指示（RSSI）的信号强度测量的对数检测器。 AGC系统包括通过对信号功率的对数求平均来估计接收信号中的功率。 分组检测的开始避免使用无线电接收机的主要模数转换器来保持功率。

    Adaptive AGC in a wireless network receiver
    5.
    发明授权
    Adaptive AGC in a wireless network receiver 有权
    无线网络接收机中的自适应AGC

    公开(公告)号：US07212798B1

    公开(公告)日：2007-05-01

    申请号：US10622175

    申请日：2003-07-17

    申请人： Andrew R. Adams ,  Philip J. Ryan ,  Brian Hart

    发明人： Andrew R. Adams ,  Philip J. Ryan ,  Brian Hart

    IPC分类号： H04B17/00

    CPC分类号： H04W52/52 ,  H03G3/3068

    摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method for controlling the gain of a radio receiver for receiving packets of information in a wireless network. The receiver is connected to an antenna subsystem and has receive signal path including a plurality of sections including a first section coupled to the antenna subsystem and a next section. Each section has an adjustable gain and is able to provide a measure of the signal strength at its output. The method includes waiting for a start of packet indication, providing a measure of the signal strength at the output of the first section and the next section, and adjusting the gains of the first and the next sections using the provided measured signal strengths. In one embodiment, the receive signal path includes a filter, the provided measure for the first section is before the filter, and the provided measure for the second section is after the filter. The gain adjusting sets first section's gain according to the measured signal strength at the output of the first section and sets the next section's gain according to the provided measure of signal strength at the output of the next section relative to the provided measure of signal strength at the output of the first section. In one embodiment, the gain adjusting o is carried out in sequential AGC stages, one stage setting the gain of one or more sections.

    摘要翻译： 存储用于实现方法的指令的装置，载体介质以及用于控制无线电接收机的增益的方法，用于在无线网络中接收信息分组。 接收机连接到天线子系统，并且具有包括多个部分的接收信号路径，所述多个部分包括耦合到天线子系统的第一部分和下一部分。 每个部分都有一个可调节的增益，能够提供其输出信号强度的测量。 该方法包括等待分组指示的开始，提供在第一部分和下一部分的输出处的信号强度的测量，以及使用所提供的测量信号强度来调整第一和下一个部分的增益。 在一个实施例中，接收信号路径包括滤波器，所提供的第一部分的测量在滤波器之前，并且所提供的第二部分的测量值在滤波器之后。 增益调整根据第一部分输出端的测量信号强度设置第一部分的增益，并根据提供的下一部分输出端的信号强度相对于所提供的信号强度测量值来设置下一部分的增益 第一部分的输出。 在一个实施例中，增益调整o在连续AGC阶段中执行，一个阶段设置一个或多个部分的增益。

    Early detection of false start-of-packet triggers in a wireless network node
    7.
    发明授权
    Early detection of false start-of-packet triggers in a wireless network node 失效
    早期检测无线网络节点中的错误启动包触发器

    公开(公告)号：US07062703B1

    公开(公告)日：2006-06-13

    申请号：US10629383

    申请日：2003-07-28

    申请人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    发明人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    IPC分类号： H04L1/00 ,  H04L1/20

    CPC分类号： H04L1/0061 ,  H04L1/0045 ,  H04L1/0072 ,  H04L1/0083

    摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method in a node of a wireless network able to receive packets that exactly or substantially conform to a wireless network standard according to which each packet includes a header having bits that have respective correct values in the case that the packet exactly conforms to the standard. The method includes receiving a start-of-packet (SOP) trigger that indicates that a packet may have been received, checking one or more bits in the header to determine whether or not they have their respective correct values, and continuing to process the packet in the case that the checking indicates that the checked bits have their respective correct values. In one implementation, the header includes a first field modulated at a known rate that has one or more reserved bit locations, and a second field modulated at a data rate indicated in the first field. In such an implementation, the checking includes processing the first field and checking one or more bits in the first field to determine whether or not they have their respective correct values, and, if the checked bits of the first field have their respective correct values, checking the second field for integrity.

    摘要翻译： 存储用于实现方法的指令的装置，载体介质以及能够接收完全或基本上符合无线网络标准的分组的无线网络的节点中的方法，根据该装置，每个分组包括具有相应位的报头 在数据包完全符合标准的情况下的正确值。 该方法包括接收指示分组可能已被接收的分组开始（SOP）触发，检查报头中的一个或多个比特以确定它们是否具有各自的正确值，并继续处理分组 在检查指示所检查的位具有它们各自的正确值的情况下。 在一个实现中，报头包括以已知速率调制的具有一个或多个保留位位置的第一场和以第一场指示的数据速率调制的第二场。 在这种实现中，检查包括处理第一字段并检查第一字段中的一个或多个比特以确定它们是否具有它们各自的正确值，并且如果第一字段的被检查比特具有各自的正确值， 检查第二个字段的完整性。

    Early detection of false start-of-packet triggers in a wireless network node
    8.
    发明授权
    Early detection of false start-of-packet triggers in a wireless network node 有权
    早期检测无线网络节点中的错误启动包触发器

    公开(公告)号：US07849391B2

    公开(公告)日：2010-12-07

    申请号：US12175067

    申请日：2008-07-17

    申请人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    发明人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    IPC分类号： H04L1/20 ,  H03M13/09

    CPC分类号： H04L1/0061 ,  H04L1/0045 ,  H04L1/0072 ,  H04L1/0083

    摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method in a node of a wireless network able to receive packets that exactly or substantially conform to a wireless network standard according to which each packet includes a header having bits that have respective correct values in the case that the packet exactly conforms to the standard. The method includes receiving a start-of-packet (SOP) trigger that indicates that a packet may have been received, checking one or more bits in the header to determine whether or not they have their respective correct values, and continuing to process the packet in the case that the checking indicates that the checked bits have their respective correct values. In one implementation, the header includes a first field modulated at a known rate that has one or more reserved bit locations, and a second field modulated at a data rate indicated in the first field. In such an implementation, the checking includes processing the first field and checking one or more bits in the first field to determine whether or not they have their respective correct values, and, if the checked bits of the first field have their respective correct values, checking the second field for integrity.

    摘要翻译： 存储用于实现方法的指令的装置，载体介质以及能够接收完全或基本上符合无线网络标准的分组的无线网络的节点中的方法，根据该装置，每个分组包括具有相应位的报头 在数据包完全符合标准的情况下的正确值。 该方法包括接收指示分组可能已被接收的分组开始（SOP）触发，检查报头中的一个或多个比特以确定它们是否具有各自的正确值，并继续处理分组 在检查指示所检查的位具有它们各自的正确值的情况下。 在一个实现中，报头包括以已知速率调制的具有一个或多个保留位位置的第一场和以第一场指示的数据速率调制的第二场。 在这种实现中，检查包括处理第一字段并检查第一字段中的一个或多个比特以确定它们是否具有它们各自的正确值，并且如果第一字段的被检查比特具有各自的正确值， 检查第二个字段的完整性。

    EARLY DETECTION OF FALSE START-OF-PACKET TRIGGERS IN A WIRELESS NETWORK NODE
    9.
    发明申请
    EARLY DETECTION OF FALSE START-OF-PACKET TRIGGERS IN A WIRELESS NETWORK NODE 有权
    早期检测无线网络节点中的假启动包启动器

    公开(公告)号：US20080273536A1

    公开(公告)日：2008-11-06

    申请号：US12175067

    申请日：2008-07-17

    申请人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    发明人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    IPC分类号： H04L12/56

    CPC分类号： H04L1/0061 ,  H04L1/0045 ,  H04L1/0072 ,  H04L1/0083

    摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method in a node of a wireless network able to receive packets that exactly or substantially conform to a wireless network standard according to which each packet includes a header having bits that have respective correct values in the case that the packet exactly conforms to the standard. The method includes receiving a start-of-packet (SOP) trigger that indicates that a packet may have been received, checking one or more bits in the header to determine whether or not they have their respective correct values, and continuing to process the packet in the case that the checking indicates that the checked bits have their respective correct values. In one implementation, the header includes a first field modulated at a known rate that has one or more reserved bit locations, and a second field modulated at a data rate indicated in the first field. In such an implementation, the checking includes processing the first field and checking one or more bits in the first field to determine whether or not they have their respective correct values, and, if the checked bits of the first field have their respective correct values, checking the second field for integrity.

    摘要翻译： 存储用于实现方法的指令的装置，载体介质以及能够接收完全或基本上符合无线网络标准的分组的无线网络的节点中的方法，根据该装置，每个分组包括具有相应位的报头 在数据包完全符合标准的情况下的正确值。 该方法包括接收指示分组可能已被接收的分组开始（SOP）触发，检查报头中的一个或多个比特以确定它们是否具有各自的正确值，并继续处理分组 在检查指示所检查的位具有它们各自的正确值的情况下。 在一个实现中，报头包括以已知速率调制的具有一个或多个保留位位置的第一场和以第一场指示的数据速率调制的第二场。 在这种实现中，检查包括处理第一字段并检查第一字段中的一个或多个比特以确定它们是否具有它们各自的正确值，并且如果第一字段的被检查比特具有各自的正确值， 检查第二个字段的完整性。

    Early detection of false start-of-packet triggers in a wireless network node
    10.
    发明授权
    Early detection of false start-of-packet triggers in a wireless network node 有权
    早期检测无线网络节点中的错误启动包触发器

    公开(公告)号：US07415661B2

    公开(公告)日：2008-08-19

    申请号：US11380152

    申请日：2006-04-25

    申请人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    发明人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    IPC分类号： H03M13/09

    CPC分类号： H04L1/0061 ,  H04L1/0045 ,  H04L1/0072 ,  H04L1/0083

    摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method in a node of a wireless network able to receive packets that exactly or substantially conform to a wireless network standard according to which each packet includes a header having bits that have respective correct values in the case that the packet exactly conforms to the standard. The method includes receiving a start-of-packet (SOP) trigger that indicates that a packet may have been received, checking one or more bits in the header to determine whether or not they have their respective correct values, and continuing to process the packet in the case that the checking indicates that the checked bits have their respective correct values. In one implementation, the header includes a first field modulated at a known rate that has one or more reserved bit locations, and a second field modulated at a data rate indicated in the first field. In such an implementation, the checking includes processing the first field and checking one or more bits in the first field to determine whether or not they have their respective correct values, and, if the checked bits of the first field have their respective correct values, checking the second field for integrity.

    摘要翻译： 存储用于实现方法的指令的装置，载体介质以及能够接收完全或基本上符合无线网络标准的分组的无线网络的节点中的方法，根据该装置，每个分组包括具有相应位的报头 在数据包完全符合标准的情况下的正确值。 该方法包括接收指示分组可能已被接收的分组开始（SOP）触发，检查报头中的一个或多个比特以确定它们是否具有各自的正确值，并继续处理分组 在检查指示所检查的位具有它们各自的正确值的情况下。 在一个实现中，报头包括以已知速率调制的具有一个或多个保留位位置的第一场和以第一场指示的数据速率调制的第二场。 在这种实现中，检查包括处理第一字段并检查第一字段中的一个或多个比特以确定它们是否具有它们各自的正确值，并且如果第一字段的被检查比特具有各自的正确值， 检查第二个字段的完整性。