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    • 2. 发明授权
    • 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
    • US06792290B2
    • 2004-09-14
    • US09776396
    • 2001-02-02
    • James Arthur Proctor, Jr.Lawrence Wayne La Mont, Jr.George Rodney Nelson, Jr.Kenneth Marvin Gainey
    • James Arthur Proctor, Jr.Lawrence Wayne La Mont, Jr.George Rodney Nelson, Jr.Kenneth Marvin Gainey
    • H04B138
    • 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。