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    • 4. 发明申请
    • WIRELESS SPEECH AND DATA TRANSMISSION
    • 无线语音和数据传输
    • WO2005011138A1
    • 2005-02-03
    • PCT/US2004/021616
    • 2004-07-06
    • QUALCOMM INCORPORATEDBALLANTYNE, Gary J.
    • BALLANTYNE, Gary J.
    • H04B1/40
    • H04B7/0689H04B1/405
    • This disclosure is directed to techniques for voice and data transmission from a wireless communication device, such as mobile telephone handset. In accordance with the disclosure, a wireless communication provides a hybrid coupler that permits voice and data calls to be combined for transmission over a common air interface. When increased transmit power is required, the wireless communication device prioritizes the voice call over the data call. In this case, the voice call is sent over both the voice output branch and the data output branch, taking advantage of the power amplifier in each output branch chain to achieve a greater overall transmit power for the voice transmission. In this manner, the mobile subscriber unit independently and simultaneously handles data and voice calls under ordinary circumstances, but drops the data call and combines the voice and data output branches for voice transmission when increased transmit power is required for the voice transmission.
    • 本公开涉及用于来自诸如移动电话手持机的无线通信设备的语音和数据传输的技术。 根据本公开,无线通信提供混合耦合器,其允许组合语音和数据呼叫以在公共空中接口上传输。 当需要增加发射功率时,无线通信设备通过数据呼叫来优先处理语音呼叫。 在这种情况下,语音呼叫通过语音输出分支和数据输出分支发送,利用每个输出分支链中的功率放大器来实现用于语音传输的更大的总发射功率。 以这种方式,移动用户单元在通常情况下独立地并且同时处理数据和语音呼叫,但是当语音传输需要增加发射功率时,丢弃数据呼叫并组合用于语音传输的语音和数据输出分支。
    • 5. 发明申请
    • QUADRATURE MODULATOR WHICH EMPLOYS FOUR 90-DEGREES-SHIFTED CARRIERS
    • 使用四个90度转换载体的四通道调制器
    • WO2004084514A1
    • 2004-09-30
    • PCT/US2004/008282
    • 2004-03-17
    • QUALCOMM INCORPORATEDBALLANTYNE, Gary, J.
    • BALLANTYNE, Gary, J.
    • H04L27/36
    • H03C1/547H03F3/2176H04L27/362
    • A quadra-polar modulator that is simple to implement and also provides good noise performance. The quadra-polar modulator includes four amplitude modulators and a combiner. Each amplitude modulator modulates a respective carrier signal with a respective input signal to provide a respective output signal. The combiner then combines the four output signals from the four amplitude modulators to provide a modulated signal. Each amplitude modulator may be implemented with a switching amplifier, such as a supply modulated class E amplifier. Two input signals are obtained by summing separately an inphase (I) modulating signal and an inverted I modulating signal with an offset value. The other two input signals are obtained by summing separately a quadrature (Q) modulating signal and an inverted Q modulating signal with the offset value. The offset value can be selected based on the expected magnitude of the modulating signals. The four carrier signals are in quadrature to each other.
    • 一种四极调制器,易于实现,并提供良好的噪声性能。 四极调制器包括四个幅度调制器和一个组合器。 每个幅度调制器用相应的输入信号调制相应的载波信号以提供相应的输出信号。 然后,组合器组合来自四个幅度调制器的四个输出信号以提供调制信号。 每个幅度调制器可以用开关放大器来实现,例如电源调制的E类放大器。 通过分别对同相(I)调制信号和具有偏移值的反相I调制信号进行求和来获得两个输入信号。 通过对正交(Q)调制信号和具有偏移值的反相Q调制信号进行相加来获得另外两个输入信号。 可以基于调制信号的预期幅度来选择偏移值。 四个载波信号彼此正交。