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    • 1. 发明申请
    • ERROR COMPENSATION DEVICE
    • 错误补偿装置
    • WO2010031433A1
    • 2010-03-25
    • PCT/EP2008/062472
    • 2008-09-18
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)HÖGBERG, MatsSIHLBOM, Björn Ulf Anders
    • HÖGBERG, MatsSIHLBOM, Björn Ulf Anders
    • H04B1/04
    • H04B1/0475
    • An error compensation device for a radio transmitter adapted to receive a digital input signal (13), modulate the input signal with a reference frequency signal from an oscillator (20) and generate an output signal (5). The error compensation device (2) comprising a feedback element (7) arranged to receive part of the output signal (5) and generate a feedback signal (11) by demodulation, an error calculation element (8) arranged to receive part of the input signal and the feedback signal from the feedback element (7) and generate a digital error signal (12) representative of the phase error introduced to the input signal (13) by the radio transmitter (1). An associated method is also disclosed.
    • 一种适于接收数字输入信号(13)的无线电发射机的误差补偿装置,用来自振荡器(20)的参考频率信号调制输入信号,并产生输出信号(5)。 误差补偿装置(2)包括反馈元件(7),反馈元件(7)被布置成接收输出信号(5)的一部分,并通过解调产生反馈信号(11);误差计算元件(8),布置成接收部分输入 信号和来自反馈元件(7)的反馈信号,并且生成表示由无线电发射机(1)引入到输入信号(13)的相位误差的数字误差信号(12)。 还公开了一种相关联的方法。
    • 4. 发明申请
    • INTERFERENCE DETECTION IN A WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统中的干扰检测
    • WO2004073189A1
    • 2004-08-26
    • PCT/EP2003/001301
    • 2003-02-11
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)MEIXNER, MichaelPAULI, MathiasHÖGBERG, Mats
    • MEIXNER, MichaelPAULI, MathiasHÖGBERG, Mats
    • H04B1/10
    • H04B1/1027
    • A receiver and a method are applied in a wireless communication system for detecting interference with a co­existing radar system. A signal received from an antenna (100) is fed through an analog part (200) and a subsequent digital part (300) of said receiver. The receiver comprising an element (240, 260) with a-priori known attenuation values for a predefined set of frequencies, a first branch-off element (230, 252) for deriving a first detection signal (Sl0, S22) from the signal before said element (240, 260) and a second branch-­off element (251, 270) for deriving a second detection signal (S21, S30, S20) from the signal after said element (240, 260). Further, the receiver comprising processing means (400) for processing the first (S10, S22) and the second (S21, S30, S20) detection signal such that a difference between the first (S10, S22) and second (S21, S30, S20) detection signal is comparable with a threshold value, wherein the threshold value depends on the a-priori known attenuation values of the element (240, 260). Depending on the comparison result, a frequency is identified as interfering or not a co-existing radar system.
    • 一种接收机和方法被应用于用于检测对共存的雷达系统的干扰的无线通信系统中。 从天线(100)接收的信号通过所述接收机的模拟部分(200)和随后的数字部分(300)馈送。 所述接收机包括具有用于预定频率组的先验已知衰减值的元件(240,260),用于从所述信号之前的信号中导出第一检测信号(S1 0,S22)的第一分支元件(230,252) 所述元件(240,260)和第二分支元件(251,270)用于从所述元件(240,260)之后的信号中导出第二检测信号(S21,S30,S20)。 此外,接收机包括用于处理第一(S10,S22)和第二(S21,S30,S20)检测信号的处理装置(400),使得第一(S10,S22)和第二(S21,S30,S20) S20)检测信号与阈值相当,其中阈值取决于元素(240,260)的先验已知衰减值。 根据比较结果,频率被识别为干扰或不是共存的雷达系统。