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    • 2. 发明授权
    • Wireless communication and beam forming with passive beamformers
    • 无源通信和无源波束形成器的波束形成
    • US06992621B2
    • 2006-01-31
    • US10384380
    • 2003-03-07
    • Eduardo CasasMarcus da Silva
    • Eduardo CasasMarcus da Silva
    • H01Q3/24
    • H01Q1/246H01Q3/30H01Q25/00
    • Wireless communication and beamforming is improved by depopulating one or more ports of a passive beamformer such as a Butler matrix and/or by increasing the order thereof. In an exemplary implementation, an access station includes: a Butler matrix having “M” antenna ports and “N” transmit and/or receive (TRX) ports; wherein at least a portion of the “M” antenna ports and/or at least a portion of the “N” TRX ports are depopulated. In another exemplary implementation, an access station includes: a Butler matrix that has multiple antenna ports and multiple TRX ports; a signal processor; and a signal selection device that is capable of coupling the signal processor to a subset of the multiple TRX ports responsive to a signal quality determination, the signal selection device adapted to switch the signal processor from a first TRX port to a second TRX port of the subset of TRX ports.
    • 无线通信和波束成形通过减少诸如巴特勒矩阵的无源波束形成器的一个或多个端口和/或通过增加其顺序来改善。 在示例性实现中,接入站包括:具有“M”个天线端口和“N”个发射和/或接收(TRX)端口的巴特勒矩阵; 其中“M”个天线端口的至少一部分和/或“N”个TRX端口的至少一部分被人口减少。 在另一示例性实现中,接入站包括:具有多个天线端口和多个TRX端口的巴特勒矩阵; 一个信号处理器; 以及信号选择装置,其能够响应于信号质量确定而将信号处理器耦合到多个TRX端口的子集,所述信号选择装置适于将信号处理器从第一TRX端口切换到第二TRX端口 TRX端口的子集。