Patent ID: 8064529
Filing Date: 2011-11-22
Classification: H03F,H04B,H04L

Abstract:
1. A peak suppressor comprising: a plurality of peak suppressing units that perform peak suppression on a plurality of signals transmitted using different communication protocols and output a plurality of suppressed signals, wherein the peak suppression is performed based on a requirement that differs according to one of the communication protocols; and a combining unit that combines the suppressed signals, wherein the peak suppressing unit includes an amplitude calculating unit that calculates an amplitude of a replica generated by a replica generating unit; a suppression coefficient calculating unit that calculates a value obtained by dividing a threshold value by the amplitude; a comparing unit that compares the amplitude with the threshold value and generates a comparison result; a selecting unit that selects the value as a suppression coefficient when the comparison result indicates that the amplitude is larger than the threshold value, and selects a predetermined value as the suppression coefficient when the amplitude is not larger than the threshold value; and a multiplying unit that multiplies the suppression coefficient by an original signal.