METHODS AND APPARATUS FOR CONTROLLING SIGNALS

摘要

A communication and/or amplifier system according to various aspects of the present invention includes an excursion signal generator and a filter system. The excursion signal generator identifies a peak portion of a signal that exceeds a threshold. The filter system filters a corresponding excursion signal having a magnitude and waveform corresponding to the portion exceeding the threshold to remove unwanted frequency components from a delayed version of the excursion signal. The filtered excursion signal may be subtracted from the original signal to reduce the peak. In one embodiment, the system operates with signals having multiple channels and subchannels. The system may adjust magnitudes of the excursion signal subchannels according to magnitudes of the first signal subchannels. The system may also adjust the excursion signal magnitude in a time division environment according to the magnitude of the original signal in the same time slot.