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发明授权
CN101640660B 生成具有降低波峰因子的多载波通信信号的装备和方法 有权 转让

生成具有降低波峰因子的多载波通信信号的装备和方法
摘要：
公开了一种生成具有降低波峰因子的多载波通信信号的装备和方法。具体地，公开了一种用于生成具有降低的波峰因子的多载波通信信号的装备实现高效的功率放大器操作。该装备包括用于输出多个成形基带传输信号的多个成形滤波器(205-n)。然后，多个混合器(210-n)将每个信号与多个复载波信号之一相乘。窗口函数生成器(235)基于未成形基带传输信号的功率电平而生成限幅窗口信号。多个窗口输出单元(245-n)输出多个基于减法的限幅窗口信号。然后，至少一个求和单元(260)根据所述多个基于减法的限幅窗口信号和所述多个成形基带传输信号而生成具有降低的波峰因子的多载波通信信号。
摘要（英）：

An apparatus for generating a multicarrier communication signal having a reduced crest factor enables efficient power amplifier operation. The apparatus includes a plurality of shaping filters (205-n) for outputting a plurality of shaped baseband transmission signals. A plurality of mixers (210-n) then multiplies each signal by one of a plurality of complex carrier signals. A window function generator (235) generates a clipping window signal based on power levels of the unshaped baseband transmission signals. A plurality of window output units (245-n) outputs a plurality of subtraction-based clipping window signals. At least one summing unit (260) then generates the multicarrier communication signal having the reduced crest factor from the plurality of subtraction-based clipping window signals and the plurality of shaped baseband transmission signals.

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