Patent ID: 7349817

Claim:
A wireless communication system for reducing the peak-to-average power ratio (PAPR) of a transmission signal, comprising: a first calculator for detecting baseband samples having magnitudes exceeding a threshold, calculating intermediate scaling factors (ISFs) for the detected samples, and setting the ISFs to ‘1’ for undetected samples; a successive peak detector for determining whether each sample is a peak by checking the ISF of each sample, comparing the spacing between a previous peak and each sample with a predetermined window size, if each sample is a peak, multiplying the ISF of each sample by a weighting value, if the spacing is less than or equal to the window size, and outputting the ISF of each sample it each sample is not a peak or the spacing is greater than the window size; a second calculator for subtracting the ISF of each sample received from the successive peak detector from a predetermined value to output a difference; and a window convolution calculator for calculating a convolution of the difference received from the second calculator and a predetermined window function, and outputting a window operation value of each sample.