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    Method for selecting frame encoding parameters to improve transmission performance in a frame-based communications network
    6.
    发明授权
    Method for selecting frame encoding parameters to improve transmission performance in a frame-based communications network 有权
    用于选择帧编码参数以改善基于帧的通信网络中的传输性能的方法

    公开(公告)号：US06882634B2

    公开(公告)日：2005-04-19

    申请号：US09825756

    申请日：2001-04-04

    申请人： Amit G. Bagchi ,  Eric Ojard ,  Henry S. Ptasinski ,  Jason Alexander Trachewsky

    发明人： Amit G. Bagchi ,  Eric Ojard ,  Henry S. Ptasinski ,  Jason Alexander Trachewsky

    IPC分类号： H04J3/06 ,  H04L1/00 ,  H04L1/08 ,  H04L1/12 ,  H04L1/18 ,  H04L12/413 ,  H04M11/00 ,  H04M11/06 ,  H04Q7/24

    CPC分类号： H04L1/0005 ,  H04L1/0003 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/08 ,  H04L1/18 ,  H04L1/1809 ,  H04L1/1848 ,  H04L1/1877 ,  H04L1/1883 ,  H04L1/1887 ,  H04L1/20 ,  H04L12/40032 ,  H04L12/4013 ,  H04L12/40136 ,  H04L12/40156 ,  H04L12/40163 ,  H04L12/403 ,  H04L12/4035 ,  H04L12/407 ,  H04L12/413 ,  H04L12/417 ,  H04L2001/0093 ,  H04L2001/125 ,  H04M11/00 ,  H04M11/06 ,  Y02D50/10

    摘要： A method for selecting frame encoding parameters to improve transmission performance for a transmitting frame being transmitted from a transmitting station to a receiving station over a transmission medium of a frame-based communications network, the transmitting frame having a header segment and a payload segment, the header segment being transmitted using a fixed set of encoding parameters such that the header segment can be received and decoded by all stations on the network, the payload segment being transmitted using a variable set of payload encoding parameters, the transmitting station sending the transmitting frame using one set of the variable set of payload encoding parameters at a time. The receiving station receives and decodes the header and payload segments of each transmitting frame. The decoding includes computing frame statistics. A plurality of sets are selected from the variable set of payload encoding parameters to form a possible set of payload encoding parameters. For each set of payload encoding parameters in the possible set of payload encoding parameters, an estimate of network performance characteristics expected if the transmitting station were to transmit the transmitting frame using that set of payload encoding parameters is generated based upon the frame statistics. A set of payload encoding parameters having optimized network performance characteristics is selected based upon estimates of expected network performance for each set of payload encoding parameters in the possible set of payload encoding parameters. The frame statistics include a slicer maximum squared error for the header segment and a slicer maximum squared error for the payload segment.

    摘要翻译： 一种用于选择帧编码参数以改善通过基于帧的通信网络的传输介质从发射站发送到接收站的传输帧的传输性能的方法，所述传输帧具有报头段和有效载荷段， 标题段使用固定的编码参数集合传送，使得标题段可以由网络上的所有站接收和解码，所述有效载荷段使用可变的有效载荷编码参数集来发送，所述发送站使用 一组一组有效载荷编码参数的变量集合。 接收站接收并解码每个发送帧的报头和有效载荷段。 解码包括计算帧统计。 从有效载荷编码参数的可变集中选择多个集合以形成可能的一组有效载荷编码参数。 对于可能的有效载荷编码参数集合中的每组有效载荷编码参数，基于帧统计信息来生成如果传输站使用该组有效载荷编码参数发射发送帧的预期的网络性能特性的估计。 基于可能的有效载荷编码参数集合中的每组有效载荷编码参数的预期网络性能的估计来选择具有优化的网络性能特征的一组有效载荷编码参数。 帧统计信息包括标题段的限幅器最大平方误差和有效载荷段的限幅器最大平方误差。

    Long training sequence method and device for wireless communications
    7.
    发明授权
    Long training sequence method and device for wireless communications 有权
    无线通信长训练序列方法及装置

    公开(公告)号：US07920526B2

    公开(公告)日：2011-04-05

    申请号：US12533100

    申请日：2009-07-31

    申请人： Christopher J. Hansen ,  Jason Alexander Trachewsky ,  Rajendra T. Moorti

    发明人： Christopher J. Hansen ,  Jason Alexander Trachewsky ,  Rajendra T. Moorti

    IPC分类号： H04Q7/00

    CPC分类号： H04L5/0023 ,  H04L5/0048 ,  H04L27/2613

    摘要： A method and device for transmitting a frame of a wireless communication begins by generating a preamble of the frame that includes a short training sequence and at least one long training sequence. The at least one long training sequence includes non-zero energy on each of a plurality of subcarriers except a DC subcarrier. The at least one long training sequence corresponds to the number of antennas and applicable wireless communication standards. A matrix is defined to represent the at least one long training sequence. The preamble is compatible with legacy and current standards. A channel is defined with a set of sub carriers to transmit the frame.

    摘要翻译： 用于发送无线通信的帧的方法和设备开始于生成包括短训练序列和至少一个长训练序列的帧的前导码。 所述至少一个长训练序列在除了DC副载波之外的多个子载波中的每一个上都包括非零能量。 至少一个长训练序列对应于天线的数量和适用的无线通信标准。 矩阵被定义为表示至少一个长训练序列。 序言与传统和当前标准兼容。 用一组子载波来定义信道以发送帧。

    METHOD AND SYSTEM FOR ANTENNA SELECTION DIVERSITY WITH BIASING
    9.
    发明申请
    METHOD AND SYSTEM FOR ANTENNA SELECTION DIVERSITY WITH BIASING 有权
    用于天线选择多样性与偏心的方法和系统

    公开(公告)号：US20100173590A1

    公开(公告)日：2010-07-08

    申请号：US12725060

    申请日：2010-03-16

    申请人： Rajendra Tushar Moorti ,  Min Chuin Hoo ,  Jason Alexander Trachewsky

    发明人： Rajendra Tushar Moorti ,  Min Chuin Hoo ,  Jason Alexander Trachewsky

    IPC分类号： H04B15/00

    CPC分类号： H04B17/0042 ,  H01Q1/1257 ,  H04B1/1027 ,  H04B7/0805 ,  H04B17/309

    摘要： Methods and systems for choosing at least one signal path are disclosed. Aspects of the method may include determining a signal quality metric for each of a plurality of signal paths, modifying the signal quality metric for each of the plurality of signal paths, and selecting at least one signal path based on at least one modified signal quality metric. At least one of the signal paths may be cycled through and the signal quality metric may be biased and/or increased and/or decreased for each of the plurality of signal paths by a fixed amount and/or by a predetermined amount. The signal quality metric may also be dynamically changed for each of the plurality of signal paths.

    摘要翻译： 公开了用于选择至少一个信号路径的方法和系统。 方法的方面可以包括确定多个信号路径中的每一个的信号质量度量，修改多个信号路径中的每一个的信号质量度量，以及基于至少一个修改的信号质量度量来选择至少一个信号路径 。 信号路径中的至少一个可以循环通过，并且信号质量度量可以针对多个信号路径中的每一个以固定量和/或预定量被偏置和/或增加和/或减小。 信号质量度量也可以针对多个信号路径中的每一个动态地改变。