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    • 2. 发明申请
    • Method and apparatus for performing directional re-scan of an adaptive antenna
    • 用于执行自适应天线的定向重新扫描的方法和装置
    • US20050143132A1
    • 2005-06-30
    • US10937792
    • 2004-09-09
    • James ProctorLawrence La MontGeorge NelsonKenneth Gainey
    • James ProctorLawrence La MontGeorge NelsonKenneth Gainey
    • H01Q1/24H01Q3/26H04B7/08H04Q7/20
    • H01Q1/246H01Q3/2605H04B7/0874
    • An antenna apparatus that can increase capacity in a cellular communication system. The antenna operates in conjunction with a mobile subscriber unit and provides a plurality of antenna elements, each coupled to a respective signal control component such as a phase shifter. The phase shift for each antenna element is programmed for optimum reception during, for example, an idle mode when a pilot signal is received. The antenna array creates a beam former for signals to be transmitted from the mobile subscriber unit, and a directional receiving array to more optimally detect and receive signals transmitted from the base station. By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference. The phase shifters are adjusted in a coarse and a fine mode. In the coarse mode all phase shifters are jointly incremented through several phase shift values until a signal quality metric is optimized. The coarse adjustment mode is followed by a fine adjustment mode during which the phase shifters are independently adjusted to further optimize the signal quality metric.
    • 一种能增加蜂窝通信系统容量的天线装置。 天线与移动用户单元结合工作,并且提供多个天线元件,每个天线元件耦合到相应的信号控制部件,例如移相器。 当接收到导频信号时,每个天线元件的相移被编程为在例如空闲模式期间的最佳接收。 天线阵列产生用于从移动用户单元发射的信号的波束形成器,以及用于更好地检测和接收从基站发射的信号的定向接收阵列。 通过定向接收和发送信号,多径衰落大大降低以及小区间干扰。 移相器在粗调和精细模式下被调整。 在粗略模式中,所有移相器通过几个相移值共同递增,直到信号质量度量被优化为止。 粗调模式之后是微调模式,在此期间,移相器被独立调整以进一步优化信号质量度量。
    • 3. 发明授权
    • Bird-deterring device
    • 防鸟装置
    • US5167099A
    • 1992-12-01
    • US705563
    • 1991-05-24
    • George Nelson
    • George Nelson
    • A01M29/32
    • A01M29/32
    • A bird-deterring device comprising a plurality of comb-like members each having comb teeth, brackets for holding said comb-like members spaced above an upwardly facing horizontal surface with the comb-like members oriented with their teeth facing away from each other, and a line having knots near its ends and passable between adjacent teeth of the comb-like members and back and forth from one comb-like member to the other, with the knots holding the line in place.
    • 一种防鸟装置,包括具有梳齿的多个梳状构件,用于将所述梳状构件保持在面向上的水平表面上方间隔开的支架,所述梳状构件以其齿彼此背离的方式取向;以及 具有靠近其端部并且在梳状构件的相邻齿之间通过并且从一个梳状构件到另一个梳状构件之间来回的线,其中结将线保持在适当位置。
    • 7. 发明申请
    • Reverse link correlation filter in wireless communication systems
    • 无线通信系统中的反向链路相关滤波器
    • US20080075150A1
    • 2008-03-27
    • US11901571
    • 2007-09-17
    • Antoine RouphaelJohn HoffmannGeorge NelsonSamir PatelJames ProctorDaniel Riley
    • Antoine RouphaelJohn HoffmannGeorge NelsonSamir PatelJames ProctorDaniel Riley
    • H04B1/69
    • H04B1/707H04B1/7105H04B1/712H04B2201/70703H04B2201/70705H04B2201/7071
    • A single, common correlation filter (CF) core is provided in a receiver for recovery of data from received code division multiple access (CDMA) signals. Signals are received over CDMA channels with different data rates, where the received signals include user information such as pilot and data symbols that have been spread according to different despreading rates including tier 1, tier 2 and tier 3 rates, where tier 1 is the smallest despreading rate. The received signal is correlated at the smallest despreading rate in the correlation filter (CF) by time multiplexing delayed versions of the pseudorandom noise (PN) code. The correlated information is then demultiplexed and pilot-aided QPSK demodulated. The demodulated information is summed at the proper integer multiple of the tier 1 rate to achieve tier 2 and tier 3 despreading rates. According to an embodiment, the three strongest multipaths components in terms of the received power are selected in a window or time period for optimal information recovery.
    • 在接收机中提供单个公共相关滤波器(CF)核,用于从接收的码分多址(CDMA)信号中恢复数据。 在具有不同数据速率的CDMA信道上接收信号,其中所接收的信号包括诸如导频和数据符号之类的用户信息,所述导频和数据符号根据不同的解扩速率(包括层1,层2和层3速率)进行扩展,其中层1是最小的 解散率。 接收到的信号通过伪随机噪声(PN)码的延迟版本的时间复用以相关滤波器(CF)中的最小解扩频率相关。 然后将相关信息解复用并导频辅助QPSK解调。 解调信息以1级速率的适当整数倍相加,以实现2级和3级解扩速率。 根据实施例,在用于最佳信息恢复的窗口或时间段中选择关于接收功率的三个最强多径分量。
    • 8. 发明申请
    • Method and apparatus for antenna steering for WLAN
    • WLAN天线转向的方法和装置
    • US20070189325A1
    • 2007-08-16
    • US11784651
    • 2007-04-09
    • John HoffmannGeorge NelsonJohn RegnierKevin Johnson
    • John HoffmannGeorge NelsonJohn RegnierKevin Johnson
    • H04J15/00
    • H04B7/088H04B17/318
    • A Station Management Entity (SME) steers a directional antenna for a station to communicate with an Access Point (AP) in an 802.11 protocol system. The SME can steer the antenna before or after an 802.11 station has authenticated and associated with the Access Point. During a passive scan, the steering process cycles through the available antenna positions and monitors an AP beacon signal to determine a best position based on, for example, a Received Signal Strength Indication (RSSI). During an active scan where access probing is used, the steering process cycles through the antenna positions and monitors a probe response to determine the best antenna position. Additional scans may be performed based on a decision that the received signal level of the currently selected antenna position has dropped below a predetermined threshold.
    • 站管理实体(SME)引导站的定向天线与802.11协议系统中的接入点(AP)进行通信。 在802.11站已通过认证并与接入点相关联之前或之后,SME可以引导天线。 在被动扫描期间,转向过程循环通过可用的天线位置并且监视AP信标信号,以基于例如接收信号强度指示(RSSI)来确定最佳位置。 在使用接入探测的主动扫描期间,转向过程循环通过天线位置并监视探测响应以确定最佳天线位置。 可以基于当前选择的天线位置的接收信号电平已经下降到预定阈值以下的判定来执行附加扫描。