Patent ID: 8862649
Filing Date: 2014-10-14
Classification: H04L

Abstract:
1. A smoothing apparatus for peak windowing, comprising: an operator configured to generate a first input signal for smoothing using an input signal for peak windowing and a predetermined clipping threshold level; a subtractor configured to subtract a first feedback signal from the first input signal; a maximum operator configured to generate a second input signal comprising a greater of each sample of the subtracted signal and zero; a feedback path configured to generate a next feedback signal for a next smoothed input signal by multiplying samples of the second input signal by window coefficients in a first window coefficient combination and a predetermined gain and sum up the multiplication results; and a convolutional operator configured to generate a smoothed signal by multiplying samples of the second input signal by window coefficients in a second window coefficient combination for low pass filtering and summing up the multiplication results; wherein the second window coefficient combination includes the first window coefficient combination and a third window coefficient combination, the third window coefficient combination being different from the first window coefficient combination.