Modulation of signals

摘要

An orthogonal frequency division multiplexing (OFDM) modulation method, which includes phase modulating both the real and imaginary components of an OFDM signal.

主权项

1. A method of controlling peak to average power ratio (PAPR) of an orthogonal frequency divisional multiplexing (OFDM) signal, comprising:
with a serial to parallel converter of an OFDM modulator, separating an input OFDM signal into real and imaginary components; with the OFDM modulator, scaling the real and imaginary components of the input OFDM signal to produce scaled real and scaled imaginary components of the input OFDM signal; with the OFDM modulator, adding an offset term to the scaled real component of the input OFDM signal to produce an adapted real component of the input OFDM signal; with the OFDM modulator, phase modulating the adapted real component and the scaled imaginary component to produce a phase modulated OFDM signal including a phase modulated real component and a phase modulated imaginary component; and with the OFDM modulator, subtracting a dominant frequency component of the phase modulated OFDM signal from the phase modulated OFDM signal to produce an output signal with a controlled PAPR for transmission;wherein:
the offset term impacts a value of the dominant frequency component.