Patent ID: 9071490
Filing Date: 2015-06-30
Classification: H04L

Abstract:
1. A data transmitting apparatus comprising: a pilot generator to generate at least one pilot signal to be used for channel estimation by a data receiving apparatus; a symbol mapper to perform symbol mapping of a plurality of data signals and at least one pilot signal into a plurality of data symbols and at least one pilot symbol; a real signal converter to convert input symbols in the frequency domain including the plurality of data symbols and the at least one pilot symbol into a real signal in the time domain; an angle modulation unit to perform angle modulation of the real signal; a Peak-to-Average Power Ratio (PAPR) control & power normalization unit to adjust the amplitude of the sine component of the angle-modulated real signal in accordance with a first gain, and to vary the first gain in accordance with an input signal; and a signal transmitter to convert the amplitude-adjusted real signal into a radio frequency signal and to transmit the radio frequency signal, wherein the angle modulation unit comprises: a phase controller to control the amplitude of the real signal in accordance with a second gain; and a modulator to perform angle modulation of the real signal into a cosine signal and a sine signal.