Method for calibrating and AOA location system for frequency hopping air interfaces
    1.
    发明授权
    Method for calibrating and AOA location system for frequency hopping air interfaces 失效
    用于跳频空中接口的校准方法和AOA定位系统

    公开(公告)号:US07405696B2

    公开(公告)日:2008-07-29

    申请号:US10768686

    申请日:2004-02-02

    IPC分类号: G01S7/40 G01S5/02

    CPC分类号: G01S19/03 H04B1/713

    摘要: A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in response to one or more calibration signals injected into the system at one or more of the frequencies in the hopping sequence and proximate in time to reception of the communication signal. The calibration coefficients are reflective of a frequency and time dependent parameter of a path between the antenna and wireless location sensor. The AOA is determined as a function of the calibration coefficient and the radio frequency energy of the received communication signal. Several embodiment of the method are illustrated.

    摘要翻译: 一种校准天线和信号处理系统的方法,所述天线和信号处理系统使得能够对跳频信号进行确定(AOA),所述跳频信号响应于在一个或多个频率处注入到系统中的一个或多个校准信号来确定校准系数 在跳频序列中并且在时间上接近通信信号。 校准系数反映了天线和无线位置传感器之间路径的频率和时间相关参数。 AOA被确定为接收到的通信信号的校准系数和射频能量的函数。 示出了该方法的几个实施例。

    Method and apparatus for setting a channel congestion message in a
wireless multiple access packet data system
    2.
    发明授权
    Method and apparatus for setting a channel congestion message in a wireless multiple access packet data system 失效
    一种用于在无线多址分组数据系统中设置信道拥塞消息的方法和装置

    公开(公告)号:US5537395A

    公开(公告)日:1996-07-16

    申请号:US421208

    申请日:1995-04-13

    CPC分类号: H04W28/12

    摘要: A method of setting a channel congestion message in a wireless multiple access packet data system in which the channel congestion message is broadcast on the forward channel of the system and communication over the reverse channel is in the form of bursts. The method comprises the steps of: measuring an actual fraction of undecodable bursts on the reverse channel; measuring traffic parameters of the reverse channel; predicting from the measured traffic parameters an expected fraction of undecodable bursts for optimum throughput on the reverse channel; comparing the actual and expected fractions of undecodable bursts, and; setting the congestion message according to the result of the comparison. A system for implementing the method is also provided.

    摘要翻译: 在系统的前向信道上广播信道拥塞消息的无线多址分组数据系统中设置信道拥塞消息的方法,并且通过反向信道的通信是突发的形式。 该方法包括以下步骤:测量反向信道上不可解码突发的实际分数; 测量反向通道的交通参数; 从所测量的业务参数预测用于反向信道上的最佳吞吐量的不可解码突发的预期分数; 比较不可解码突发的实际和预期分数, 根据比较结果设置拥塞消息。 还提供了一种用于实现该方法的系统。