Patent ID: 7796498

Claim:
A weighted tone reservation method, comprising: obtaining a sequence, X, wherein X is derived from binary data input to be transformed and transmitted wirelessly over an antenna using orthogonal frequency division multiple access modulation; calculating a second sequence, X_PAPR, using the sequence, X and the following equation: X_PAPR = 10 ⁢ ⁢ log 10 ⁢ Max ⁡ (  X  2 ) E ⁡ (  X  2 ) . wherein |X| is an amplitude profile of sequence, X, Max(|X| 2 ) is a maximum of the square of the amplitude profile of sequence, X, and E(|X| 2 ) is a mean of the square of the amplitude profile of sequence, X; and generating a third sequence, X NEW , a linear addition of the sequence, X, and a fourth sequence generated by reserved tones on a frequency domain if the second sequence, X_PAPR, exceeds a threshold value; wherein the third sequence, Xnew, is the same as the sequence, X, if the second sequence, X_PAPR, does not exceed the threshold value; determining that the second sequence, X_PAPR, exceeds the threshold value; calculating a clipping threshold, CT, based on a predetermined clipping rate, CR; and using the clipping threshold to generate a fifth sequence, X p , wherein the fifth sequence, X p , is used to generate the new sequence, X NEW .