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    • 79. 发明申请
    • WSS WITH HITLESS SWITCHING
    • 无缝切换的WSS
    • US20110150389A1
    • 2011-06-23
    • US12643922
    • 2009-12-21
    • Qianggao HuLiping SunLiu YangZhilin YuanHui XieRui Yang
    • Qianggao HuLiping SunLiu YangZhilin YuanHui XieRui Yang
    • G02B6/26
    • G02B6/29395G02B6/3594
    • A wavelength selective switch (WSS) with hitless switching. The WSS includes the fiber collimator array, the focusing lens, collimating lens, diffraction grating, focusing lens, and attenuation reflection unit array. Each attenuation reflection unit has an interconnected transmission-type MEMS attenuator and a one-dimension MEMS reflector. The transmission-type MEMS attenuator is positioned in the front of the one-dimension MEMS reflector. The central axis of the transmission-type MEMS attenuator aligns and coincides with that of the one-dimension MEMS reflector, with the two central axes being glued together. The WSS of the present invention effectively utilizes the combination of a one-dimension reflector array and a transmission-type optical attenuator chip. With the use of one-dimension reflector array, instead of the known two-dimension reflector array, the complexity of design and manufacture is greatly reduced, thereby reducing the production costs of the switch.
    • 具有无间断切换的波长选择开关(WSS)。 WSS包括光纤准直器阵列,聚焦透镜,准直透镜,衍射光栅,聚焦透镜和衰减反射单元阵列。 每个衰减反射单元具有互连的透射型MEMS衰减器和一维MEMS反射器。 传输型MEMS衰减器位于一维MEMS反射器的前面。 传输型MEMS衰减器的中心轴与一维MEMS反射器的中心轴对准并重合,两个中心轴被粘合在一起。 本发明的WSS有效地利用了一维反射器阵列和透射型光衰减器芯片的组合。 使用一维反射器阵列,而不是已知的二维反射器阵列,大大降低了设计和制造的复杂性,从而降低了开关的生产成本。
    • 80. 发明授权
    • Method and apparatus for automatically correcting receiver oscillator frequency
    • 接收振荡器频率自动校正的方法和装置
    • US07865158B2
    • 2011-01-04
    • US11299502
    • 2005-12-12
    • Aykut BultanJung-Lin PanRui YangKenneth P. Kearney
    • Aykut BultanJung-Lin PanRui YangKenneth P. Kearney
    • H04B1/18
    • H03J7/04
    • A method and apparatus for automatically correcting the frequency of a local oscillator of a receiver. A primary common pilot channel (CPICH) code sequence is generated by a CPICH code generator based on a reference cell identification signal and a frame start signal. The received despread CPICH code sequence is used to generate an estimated frequency error signal. A control voltage signal is generated by a control voltage generator based on the estimated frequency error signal. The CPICH code generator generates the CPICH code sequence based on signals received from a high speed downlink packet access (HSDPA) serving cell when HSDPA is active, or a timing reference cell when HSDPA is not active. The present invention achieves full maximum ratio combining gain when space time transmit diversity (STTD) is used, even without receiving a transmit diversity indication.
    • 一种用于自动校正接收机的本地振荡器的频率的方法和装置。 基于参考小区识别信号和帧起始信号,由CPICH码发生器生成主公共导频信道(CPICH)码序列。 接收的解扩CPICH码序列用于产生估计的频率误差信号。 控制电压信号由控制电压发生器基于估计的频率误差信号产生。 当HSDPA处于活动状态时,CPICH码发生器基于从高速下行链路分组接入(HSDPA)服务小区接收的信号,或者当HSDPA不活动时,定时参考小区,生成CPICH码序列。 即使没有接收到发送分集指示,本发明在使用空间时间发送分集(STTD)时实现了全最大比合并增益。