Patent ID: 8275067
Filing Date: 2012-09-25
Classification: H04M

Abstract:
1. A method for adaptively reducing peak-to-average power ratio (PAR) in transmitting data comprising: mapping a portion of the data and a default label indicative of a default set of PAR reduction tones (PRT) tones into a symbol, wherein the default label is mapped using PRT signaling tones; generating a time-domain signal with an inverse fast Fourier transform (IFFT), said time-domain signal having a PAR; calculating the PAR of said time-domain signal; selecting a selected set of PRT from a predetermined plurality of sets of PRT based on the PAR, said selected set of PRT having a label; comparing the label of the selected set to the default label; if the label of the selected set and the default label differ, mapping a subset of the portion of the data and the label of the selected set into a revised symbol, generating a revised time-domain signal with an IFFT and processing the revised time-domain signal using the selected set of PRT to reduce PAR; and if the label of the selected set and the default label are identical, processing the time-domain signal using the default set of PRT to reduce PAR.