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    Adaptive AGC in a wireless network receiver
    3.
    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。

    Adaptive AGC in a wireless network receiver
    4.
    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
    5.
    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
    6.
    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。

    Selecting an access point according to a measure of received signal quality
    8.
    发明授权
    Selecting an access point according to a measure of received signal quality 有权
    根据接收到的信号质量的度量来选择接入点

    公开(公告)号：US07460512B2

    公开(公告)日：2008-12-02

    申请号：US11186045

    申请日：2005-07-20

    申请人： David S. Goodall ,  Philip J. Ryan ,  Andrew F. Myles ,  Ludovico N. de Souza

    发明人： David S. Goodall ,  Philip J. Ryan ,  Andrew F. Myles ,  Ludovico N. de Souza

    IPC分类号： H04Q7/24

    CPC分类号： H04W48/20 ,  H04B17/318 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/206 ,  H04L5/0091 ,  H04W24/00 ,  H04W84/12 ,  H04W84/18

    摘要： An apparatus for inclusion and a method for operation in a station (STA) of a wireless network. The method includes received data from at least one remote station and determining a measure of the signal quality, e.g., a measure of the EVM from samples of the data received from the remote station(s). If the remote station(s) is/are access point(s), the station selects an access point for association according to criteria that include the measure of the EVM from the remote station. If the received data includes a request management message, the station responds to the request management message with a response management message that include a measure of the EVM of the received data corresponding to the request management message. Thus, the remote station receiving the response management message receives an indication of the quality of the link between the station and the remote station without the receiving remote station necessarily being EVM-capable.

    摘要翻译： 一种用于包含的装置和用于在无线网络的站（STA）中操作的方法。 该方法包括来自至少一个远程站的接收数据，并且确定信号质量的度量，例如，从从远程站接收的数据的采样中的EVM的测量。 如果远程站是接入点，则站根据包括来自远程站的EVM的测量的标准来选择关联的接入点。 如果接收到的数据包括请求管理消息，则站点响应管理消息响应于包括对应于请求管理消息的接收到的数据的EVM的测量的响应管理消息。 因此，接收到响应管理消息的远程站接收站与远程站之间的链路的质量的指示，而接收远程站必须具有EVM能力。