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    • 88. 发明申请
    • MOBILE COMMUNICATION TERMINAL
    • 移动通信终端
    • WO00060753A1
    • 2000-10-12
    • PCT/JP1999/001739
    • 1999-04-02
    • H04B1/04H04B1/16H04B1/3822H04B1/40H04B1/56H04B15/00H04L27/36H04L27/12
    • H04B15/005H04B1/04H04B1/0475H04B1/1607H04B1/56H04B2215/063H04L27/368
    • Conventionally, when a transmission power amplifier is turned on, the battery voltage supplied to a transmission local oscillator momentarily drops and a phase error occurs in the carrier, deteriorating the modulation precision. A mobile communication terminal of the invention comprises a voltage detector for detecting the battery voltage when it drops, a correction phase storage unit in which information about correction phase which is inverse to the phase error of the carrier caused by the drop of the battery voltage, a correction phase output unit for selecting the correction phase information by using the battery voltage when it drops, outputting it to a baseband demodulator, and thereby changing the phase information of a baseband signal, and a demodulator for demodulating the carrier according to the baseband signal outputted from the correction phase output unit to cancel the phase error contained in the carrier.
    • 通常,当发送功率放大器接通时,提供给发送本地振荡器的电池电压瞬间下降并且在载波中发生相位误差,从而降低调制精度。 本发明的移动通信终端包括:电压检测器,用于在其下降时检测电池电压;校正相位存储单元,其中关于校正相位的信息与由电池电压的下降引起的载波的相位误差相反, 校正相位输出单元,用于通过使用电池电压下降时的电池电压来选择校正相位信息,将其输出到基带解调器,从而改变基带信号的相位信息;以及解调器,用于根据基带信号解调载波 从校正相位输出单元输出,以消除载波中包含的相位误差。
    • 89. 发明申请
    • RADIO COMMUNICATION EQUIPMENT
    • 无线电通信设备
    • WO98045979A1
    • 1998-10-15
    • PCT/JP1998/001523
    • 1998-04-02
    • H03K17/00H03K17/16H04B1/04H04B1/44H04B1/56H04J3/16H04L5/14H04L5/16H04B1/54
    • H04B1/56H04B2215/063H04L5/1492
    • Radio communication equipment which performs radio communication by the TDD system, wherein a starting timing signal indicating the leading sign of a random transmission-reception slot pattern is transmitted to a random transmission-reception generating device from a starting timing recognizing device and the generating device randomly selects transmission or reception to transfer the selected transmission or reception mode to a slot controller. The slot controller randomizes the frequency in synchronism with the turning on/off period of transmission by controlling a framing device and a transmission/reception change-over switch in accordance with a randomly selected transmission or reception slot.
    • 无线电通信设备,其通过TDD系统执行无线电通信,其中指示随机发送 - 接收时隙模式的前导符号的起始定时信号从随机发送接收发生装置从起始定时识别装置和随机发送装置被发送 选择发送或接收将选择的发送或接收模式传送到时隙控制器。 插槽控制器通过根据随机选择的发送或接收时隙控制成帧装置和发送/接收转换开关,使频率与发送的接通/断开时段同步地随机化。