Patent ID: 8824574

Claim:
A method of operating a transmitting unit to reduce peak to average power ratio (PAPR) comprising: generating a communication signal which is processed within and broadcast from said transmitting unit; generating an excursion signal from said communication signal, said excursion signal being processed and recombined with said communication signal within said transmitting unit, and said excursion signal having a raw peak event; obtaining a predetermined normalized scaling filter which estimates a transfer function of an excursion filter system for said excursion signal; determining a gain mask which defines said excursion filter system for said excursion signal, said gain mask being determined in response to a magnitude of a scaled version of said excursion signal and a noise limit for said communication signal; filtering said excursion signal through said scaling filter to form a processed peak event; adjusting said magnitude of said excursion signal to form said scaled version of said excursion signal, said magnitude being adjusted in response to first stage and second stage scale factors, said first stage scale factor being configured to correspond to said gain mask and said second stage scale factor being determined in response to said raw peak event and said processed peak event; filtering said excursion signal through said excursion filter system; and combining the filtered excursion signal with said communication signal.