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    • 25. 发明授权
    • Wireless communication subsystem with a digital interface
    • 无线通信子系统具有数字接口
    • US09014200B2
    • 2015-04-21
    • US13687880
    • 2012-11-28
    • David PragerBruce C. RothaarHeinz Lycklama A'nyeholtDave Randall
    • David PragerBruce C. RothaarHeinz Lycklama A'nyeholtDave Randall
    • H04L12/26H04B1/38F24F11/00H04L12/931
    • H04J14/0227F24F11/30F24F11/54H04B1/38H04L49/351
    • Systems and methods are disclosed which provide wireless communication systems implementing subsystems adapted for flexible deployment configurations and to resist the introduction of interference. Preferred embodiments of the present invention provide a wireless communication system configuration in which an ODU subsystem is coupled to an IDU subsystem using a fiber optic link. According to a preferred embodiment of the present invention, an ODU subsystem is adapted to provide conversion between digital and analog to thereby facilitate the use of a digital link between the ODU subsystem and a corresponding IDU subsystem. Embodiments of the present invention utilize a plurality of ODU subsystems configured according to the present invention to provide wireless communication coverage of a service area, such as to provide a wireless application termination system (WATS) hub for use in providing wireless communication links with respect to a plurality of subscriber units.
    • 公开了提供实现适于灵活部署配置的子系统并且抵抗引入干扰的无线通信系统的系统和方法。 本发明的优选实施例提供一种无线通信系统配置,其中ODU子系统使用光纤链路耦合到IDU子系统。 根据本发明的优选实施例,ODU子系统适于提供数字和模拟之间的转换,从而有助于使用ODU子系统和对应的IDU子系统之间的数字链路。 本发明的实施例利用根据本发明配置的多个ODU子系统来提供服务区域的无线通信覆盖,例如提供无线应用终端系统(WATS)集线器,用于提供无线通信链路相对于 多个用户单元。
    • 28. 发明授权
    • Scanning mirror control having least mean square tone adder
    • 具有最小均方根色调加法器的扫描镜控制
    • US07948668B2
    • 2011-05-24
    • US12239711
    • 2008-09-26
    • Bruce C. Rothaar
    • Bruce C. Rothaar
    • G02B26/08
    • G02B26/101
    • A scanning beam projection system includes a scanning mirror having a fast-scan axis and a slow-scan axis. Movement on the slow-scan axis is controlled by a slow-scan scanning mirror control system. The control system receives position information describing angular displacement of the mirror. An outer loop of the control system includes least mean square (LMS) tone adders that determine harmonically related signals that when combined produce a scanning mirror drive signal. An inner loop of the control system compensates for a scanning mirror resonant vibration mode at a frequency within the frequency band occupied by the harmonically related signals.
    • 扫描光束投影系统包括具有快速扫描轴和慢扫描轴的扫描镜。 慢扫描轴上的移动由慢扫描扫描镜控制系统控制。 控制系统接收描述镜的角位移的位置信息。 控制系统的外环包括最小均方(LMS)色调加法器,其确定当组合时产生扫描镜驱动信号的谐波相关信号。 控制系统的内部回路以谐波相关信号占据的频带内的频率补偿扫描镜共振振动模式。
    • 30. 发明授权
    • Wireless communication subsystem with a digital interface
    • 无线通信子系统具有数字接口
    • US07773614B1
    • 2010-08-10
    • US10010935
    • 2001-12-05
    • David PragerBruce C. RothaarHeinz Lycklama a'NyeholtDave Randall
    • David PragerBruce C. RothaarHeinz Lycklama a'NyeholtDave Randall
    • H04L12/56
    • H04J14/0227F24F11/30F24F11/54H04B1/38H04L49/351
    • Systems and methods are disclosed which provide wireless communication systems implementing subsystems adapted for flexible deployment configurations and to resist the introduction of interference. Preferred embodiments of the present invention provide a wireless communication system configuration in which an ODU subsystem is coupled to an IDU subsystem using a fiber optic link. According to a preferred embodiment of the present invention, an ODU subsystem is adapted to provide conversion between digital and analog to thereby facilitate the use of a digital link between the ODU subsystem and a corresponding IDU subsystem. Embodiments of the present invention utilize a plurality of ODU subsystems configured according to the present invention to provide wireless communication coverage of a service area, such as to provide a wireless application termination system (WATS) hub for use in providing wireless communication links with respect to a plurality of subscriber units.
    • 公开了提供实现适于灵活部署配置的子系统并且抵抗引入干扰的无线通信系统的系统和方法。 本发明的优选实施例提供一种无线通信系统配置,其中ODU子系统使用光纤链路耦合到IDU子系统。 根据本发明的优选实施例,ODU子系统适于提供数字和模拟之间的转换,从而有助于使用ODU子系统和对应的IDU子系统之间的数字链路。 本发明的实施例利用根据本发明配置的多个ODU子系统来提供服务区域的无线通信覆盖,例如提供无线应用终端系统(WATS)集线器,用于提供无线通信链路相对于 多个用户单元。