Patent ID: 8687734

Claim:
A method for reducing a Peak to Average Power Ratio (â€œPAPRâ€) of an Orthogonal Frequency Division Multiplexing (â€œOFDMâ€) signal, comprising: routing said OFDM signal to first and second signal processing paths; time delaying said OFDM signal traveling along said first signal processing path; using a digital filter and said OFDM signal to determine a threshold value; determining whether an instantaneous signal magnitude value of said OFDM signal traveling along said second signal processing path is greater than said threshold value, exclusively when said digital filter has a steady state behavior; if it is determined that said instantaneous signal magnitude value is greater than said threshold value, scaling a magnitude of at least a first complex symbol sample of said OFDM signal which has been time delayed to a level that precludes a power amplifier from entering a non-linear region of operation; and if it is determined that said instantaneous signal magnitude value is not greater than said threshold value, outputting said complex symbol sample of said OFDM signal which has been time delayed without modification to said magnitude thereof.