| 摘要 |
A modulator (102) generates a frequency-multiplexed composite signal (502) including a plurality of symbols. A processing system (108) of the modulator defines (802) a signal template (600) specifying symbol-type adjustment factors for corresponding symbol types, and then locates (804) in the composite signal a portion of the signal whose amplitude exceeds a predetermined threshold by an amplitude excess. The processing system records (806) the amplitude excess, the phase angle, and a time of the portion; and determines (808) an input symbol corresponding to the time, the input symbol being of a symbol type. The processing system adjusts (810) the input symbol in accordance with one of the plurality of symbol-type adjustment factors corresponding to the symbol type, and further in accordance with the amplitude excess and the phase angle, thereby bringing the amplitude below the predetermined threshold.
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