Patent ID: 8842758

Claim:
An apparatus comprising a controller for a multi-carrier modulator having a PAPR-reduction symbol generator and an inverse fast Fourier transform (IFFT) processor, wherein: (a) the controller is configured to determine whether or not the multi-carrier modulator has one or more tones available for PAPR reduction; and (b) if the controller determines that the multi-carrier modulator has one or more tones available for PAPR reduction, then: (b1) the PAPR-reduction symbol generator generates at least one PAPR-reduction symbol for at least one tone available for PAPR reduction; and (b2) the IFFT processor generates the multi-carrier modulated signal using the at least one PAPR-reduction symbol; and (c) if the controller determines that the multi-carrier modulator does not have one or more tones available for PAPR reduction, then the IFFT processor generates the multi-carrier modulated signal without using a PAPR-reduction symbol.