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    • 4. 发明申请
    • PREDICTIVE CLIPPING IN MULTI-CARRIER WIRELESS COMMUNICATION SYSTEMS
    • 多载波无线通信系统中的预测性剪辑
    • WO2011146753A1
    • 2011-11-24
    • PCT/US2011/037214
    • 2011-05-19
    • QUALCOMM INCORPORATEDMIRBAGHERI, ArashBANISTER, Brian C.
    • MIRBAGHERI, ArashBANISTER, Brian C.
    • H04L27/26
    • H04L27/2623
    • A method and apparatus for selectively clipping waveforms prior to transmission in a multi-carrier wireless communication system is provided. The design includes estimating peak values of the composite multi-carrier signal, determining a local threshold set including one local threshold for each carrier based on a configurable total threshold representing a maximum aggregate signal level for a sum of all signals to be transmitted over the multiple carriers, and clipping one signal to be transmitted over one carrier when the signal exceeds a corresponding local threshold and a sum of all signals to be transmitted over multiple carriers exceed the total threshold. Alternately, the design may include estimating peak signal values for signals to be transmitted in the multi-carrier system, and selectively clipping any signal wherein at least one peak signal value exceeds a local threshold and peak signal values for a sum of all signals to be transmitted exceed a global threshold.
    • 提供一种用于在多载波无线通信系统中传输之前选择性地截取波形的方法和装置。 该设计包括估计复合多载波信号的峰值,基于表示要在多个载波上传输的所有信号的和的最大聚合信号电平的可配置总阈值来确定包括每个载波的一个局部阈值的本地阈值集合 并且当信号超过对应的本地阈值并且要在多个载波上发送的所有信号的总和超过总阈值时,剪切要在一个载波上发送的一个信号。 或者,该设计可以包括估计要在多载波系统中传输的信号的峰值信号值,并且选择性地削波任何信号,其中至少一个峰值信号值超过局部阈值,并且将所有信号的和的峰值信号值 传输超过全局阈值。