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    • 18. 发明公开
    • 진폭 및 위상 에러 보상을 통해 캐리어를 변조하는 방법및 디바이스
    • 用于调制载波和相位误差补偿的过程和设备
    • KR1020040022151A
    • 2004-03-11
    • KR1020030057905
    • 2003-08-21
    • 톰슨 라이센싱
    • 로브르,쟝-루르나우르,쟝-이브바롱,프랑소와즈
    • H04L27/34
    • H04L27/364H04L2027/0016H04L2027/0018
    • PURPOSE: A process and a device are provided to directly modulate an RF carrier with a quadrature signal by using amplitude and phase error compensation. CONSTITUTION: The correction operations is performed at a DSP processor(501) level. The inputs and outputs of the signals of the DSP are effected by way of analogue/digital and digital/analogue converters. In this processor, the useful signals are generated in a known coding system(502) and then sent to a generator of the signals I and Q(503) which simultaneously performs the modulation error correction on the basis of an error signal obtained in the manner described hereinbelow. The signals I and Q, which are in baseband, are then filtered in a filtering module(504) so as to obtain the spectrum. An LF(Low-Frequency) reference subcarrier is generated by a generator(505). It is then inserted with the aid of a switch(506) alternately into the signals I and Q by summators(507,508). The tempo is determined by a clock signal delivered by a sequencer(522), so as to obtain the desired compensation tempo.
    • 目的:通过使用幅度和相位误差补偿,提供了一种通过正交信号直接调制RF载波的过程和设备。 构成:校正操作在DSP处理器(501)级执行。 DSP的信号的输入和输出通过模拟/数字和数字/模拟转换器实现。 在该处理器中,有用的信号在已知的编码系统(502)中生成,然后发送到信号I和Q(503)的发生器,信号I和Q(503)基于以该方式获得的误差信号同时执行调制纠错 如下所述。 然后,在基带中的信号I和Q在滤波模块(504)中进行滤波,以获得频谱。 LF(低频)参考子载波由发生器(505)产生。 然后借助于开关(506),通过加法器(507,508)将信号I和Q交替地插入到信号I和Q中。 速度由定序器(522)传送的时钟信号确定,以获得所需的补偿速度。