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    • 4. 发明申请
    • MULTI-CARRIER TRANSMISSION OVER A SINGLE FREQUENCY BAND
    • 单个频段的多载波传输
    • WO2010080841A1
    • 2010-07-15
    • PCT/US2010/020267
    • 2010-01-06
    • QUALCOMM INCORPORATEDSAMBHWANI, Sharad, DeepakCHOI, Zae, YongLEE, HeechoonBHARADWAJ, Arjun
    • SAMBHWANI, Sharad, DeepakCHOI, Zae, YongLEE, HeechoonBHARADWAJ, Arjun
    • H04L27/26H04B1/04
    • H04L27/2637
    • Systems and methodologies are described that facilitate synthesizing a single baseband waveform from digital signals related to multiple carriers. Digital signals can be received relating to a plurality of carriers. The digital signals can result from spreading data symbols from transport blocks to create chip sequences, which can additionally be pulse shaped. The digital signals can be rotated in a positive or negative direction, such as according to a complex sinusoid or a negative representation thereof. The rotated signals can be combined or added to generate a single baseband waveform. The single baseband waveform can be converted to an analog signal, which can be up- converted and centered at a plurality of frequency carriers, which can be adjacent, assigned for transmitting the signal. In addition, optimizations can be provided to ensure threshold power ratio over the plurality of carriers for effectively transmitting jointly encoded signals.
    • 描述了有助于从与多个载波相关的数字信号合成单个基带波形的系统和方法。 可以接收与多个载波有关的数字信号。 数字信号可以由扩展来自传输块的数据符号产生,以产生可以另外被脉冲形成的码片序列。 数字信号可以沿正或负方向旋转,例如根据复数正弦曲线或其负表示。 旋转的信号可以组合或相加以产生单个基带波形。 单个基带波形可以被转换成模拟信号,该模拟信号可被上变频并且可以被分配用于发送信号的多个频率载波中心。 此外,可以提供优化以确保多个载波上的阈值功率比以有效地传输联合编码的信号。