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    • 11. 发明公开
    • 이동통신단말기의 주파수 오차 보정방법
    • 用于在移动终端中补偿频率误差的方法
    • KR1020020057201A
    • 2002-07-11
    • KR1020000087476
    • 2000-12-30
    • 주식회사 팬택앤큐리텔
    • 허원혁
    • H04B15/00
    • H04B17/13H04B2001/0416H04B2001/0491
    • PURPOSE: A method for compensating a frequency error in a mobile terminal is provided to compensate a frequency error at a time, while controlling a VC-TCXO(Voltage Controlled Compensation Oscillator), by making output frequency variations versus VC-TCXO control voltage as a table so that the CPU of a mobile terminal can refer to this table in frequency error compensation. CONSTITUTION: The CPU of a mobile terminal detects a frequency output from the frequency generator of the mobile terminal(S101). The CPU calculates a frequency error from the detected frequency(S103). Based on a VC-TCXO control voltage to output frequency variation table(S105), the CPU determines the control voltage of a VC-TCXO(S107). The CPU controls the VC-TCXO according to the determined VC-TCXO control voltage(S109) and outputs a compensated frequency(S111).
    • 目的:提供一种用于补偿移动终端中的频率误差的方法,以通过使输出频率变化相对于VC-TCXO控制电压为一个来控制VC-TCXO(压控补偿振荡器)来一次补偿频率误差 表使得移动终端的CPU可以在频率误差补偿中参考该表。 构成:移动终端的CPU检测来自移动终端的频率发生器的频率输出(S101)。 CPU根据检测到的频率计算频率误差(S103)。 基于VC-TCXO控制电压到输出频率变化表(S105),CPU确定VC-TCXO的控制电压(S107)。 CPU根据确定的VC-TCXO控制电压来控制VC-TCXO(S109)并输出补偿频率(S111)。
    • 20. 发明公开
    • 통신 시스템에서 다중 포트 증폭 장치 및 방법
    • 通信系统中多路扩频的装置和方法
    • KR1020130111839A
    • 2013-10-11
    • KR1020120034039
    • 2012-04-02
    • 한국전자통신연구원
    • 문성모신동환염인복이문규
    • H03F3/68H04B1/40
    • H04B17/13H04B7/18515H04B7/2041H03F3/602H03F3/68H03F2200/198H03F2200/336
    • PURPOSE: A multiport amplifying device in a communications system and a method thereof are provided to normally transmit and receive signals being transmitted through multiple beams. CONSTITUTION: A multiport amplifying device comprises amplifying parts (420,422), an calculating part (430), and a correcting part (410). The amplifying part amplifies an input signal inputted through the multiple input ports for outputting the amplified signals to multiple output ports. The amplifying part amplifies the input signal in which phase errors or amplitude errors are corrected for outputting to the multiple output ports. The calculating part detects the phase errors or amplitude errors of the input signal for calculating the phase error value or amplitude error value of the input signal. The correcting part corrects the phase errors or amplitude errors of the input signal through the phase error value or amplitude error value of the input signal.
    • 目的:提供通信系统中的多端口放大装置及其方法,以正常发送和接收通过多个波束发送的信号。 构成:多端口放大装置包括放大部件(420,422),计算部件(430)和校正部件(410)。 放大部分放大通过多个输入端口输入的输入信号,以将放大的信号输出到多个输出端口。 放大部分放大输入信号,其中相位误差或振幅误差被校正以输出到多个输出端口。 计算部分检测用于计算输入信号的相位误差值或振幅误差值的输入信号的相位误差或振幅误差。 校正部分通过输入信号的相位误差值或振幅误差值校正输入信号的相位误差或振幅误差。