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    • 23. 发明授权
    • Apparatus and method for digital pre-distortion, sharing feedback path in a multiple antenna wireless communication system
    • 用于数字预失真的装置和方法,在多天线无线通信系统中共享反馈路径
    • US08218678B2
    • 2012-07-10
    • US12357215
    • 2009-01-21
    • Seong-Hun Kim
    • Seong-Hun Kim
    • H04K1/02
    • H03F1/3247H03F3/24H03F3/68
    • A multiple antenna wireless communication system using a DPD power amplifier and a method for controlling an amplitude of an input signal for a plurality of transmission paths of the DPD power amplifier are provided. The system includes a plurality of amplifiers, a plurality of couplers, a switch, a shared feedback path and a plurality of processors. The plurality of amplifiers amplifies an input signal directed to each of the transmission paths. The plurality of couplers couple amplified signals on respective transmission paths. The switch outputs at least one of the amplified signals coupled on the respective transmission paths. The shared feedback path provides the amplified signal output from the switch to a plurality of processors. The plurality of processors compare a feedback signal provided through the shared feedback path with the input signal and pre-distort the input signal such that the input signal and the amplified signal have a linear relation with each other.
    • 提供了使用DPD功率放大器的多天线无线通信系统和用于控制DPD功率放大器的多个传输路径的输入信号幅度的方法。 该系统包括多个放大器,多个耦合器,开关,共享反馈路径和多个处理器。 多个放大器放大针对每个传输路径的输入信号。 多个耦合器在相应的传输路径上耦合放大的信号。 开关输出耦合在各个传输路径上的放大信号中的至少一个。 共享反馈路径将从开关输出的放大信号提供给多个处理器。 多个处理器将通过共享反馈路径提供的反馈信号与输入信号进行比较,并对输入信号进行预失真,使得输入信号和放大信号彼此具有线性关系。
    • 27. 发明申请
    • DYNAMIC INITIALIZATION METHOD AND SYSTEM OF LOCATION SERVER
    • 动态初始化方法和位置服务器系统
    • US20100131615A1
    • 2010-05-27
    • US11993196
    • 2006-06-22
    • Seong-Hun KimGye-Han Song
    • Seong-Hun KimGye-Han Song
    • G06F15/177G06F15/16
    • H04L12/185A63F13/12A63F13/35H04L12/1863H04L67/1095
    • A dynamic server initialization system and method includes: a second location server requesting a first location server for a registration to a multicast group associated with a replication group, when the second location server is added to the replication group comprising at least one first location server, transferring status update messages which are received from a predetermined service server, to the second location server, when the registration is completed in the first location server; the second location server requesting the first location server for a message dump when a predetermined reference time elapses; and dumping the status update messages which are maintained in a predetermined message pool of the first location server, to the second location server according to the message dump request.
    • 动态服务器初始化系统和方法包括:当第二位置服务器被添加到包括至少一个第一位置服务器的复制组时,请求第一位置服务器注册到与复制组相关联的多播组的第二位置服务器, 当在第一位置服务器中完成注册时,将从预定服务服务器接收的状态更新消息传送到第二位置服务器; 所述第二定位服务器在经过预定参考时间时请求所述第一位置服务器进行消息转储; 以及根据所述消息转储请求将维护在所述第一位置服务器的预定消息池中的状态更新消息转储到所述第二位置服务器。