Patent ID: 7003025

Claim:
A method for shaping an envelope of a complex signal, composed of a plurality of sample symbols with a real part and an imaginary part, by keeping the amplitude of each of said sample symbols at or below a threshold value, said method comprising the steps of: rearranging said complex signal in a time domain; obtaining the amplitude of one of said sample symbols of said complex signal; comparing the amplitude of said one of said sample symbols to said threshold value; setting the amplitude and sign of the real part of each of said plurality of sample symbols to the amplitude and sign of the real part of said one of said sample symbols, if the amplitude of the real part of said one of said sample symbols is equal to or less than said threshold value; setting the imaginary part of each of said plurality of sample symbols to the amplitude of said threshold value minus the amplitude of the real part of said one said sample symbols and wherein the sign of the imaginary part of each of said plurality of sample symbols is the sign of the real part of said one of said sample symbols, if the amplitude of the real part of said one of said sample symbols is equal to or less than said threshold value; setting the sign of the real part of each of said plurality of sample symbols to a positive value and the amplitude of the real part of each of said plurality of sample symbols to half the amplitude of the real part of said one of said sample symbols, if the amplitude of the real part of said one of said sample symbols is greater than said threshold value; and setting the sign of the imaginary part of each of said plurality of sample symbols to a negative value and the amplitude of the imaginary part of each of said plurality of sample symbols equal to one half the amplitude of the real part of said one of said sample symbols, if the amplitude of the real part of said one of said sample symbols is greater than said threshold value.