CHANNEL ESTIMATION AND PEAK TO AVERAGE POWER RATIO REDUCTION IN MULTI-CARRIER MODULATION RECEIVERS

摘要

orthogonal frequency division multiplexing (OFDM) is provided a method for performing channel estimation in the signal. The method includes performing channel estimation on the basis of the use of the tone carrier channel reservation. Furthermore, a method for reducing the peak power-to-average ratio (PAPR) of electric power to the multi-carrier modulated signal containing more than one group of carriers is provided, the method, first, as the carrier types of arbitrary non-zero in the second group selecting the value, and then, on the basis of a predetermined PAPR threshold value is performed by determining the optimum values non-zero for the carrier type in the second group to where the carrier type in the first group of data carriers, to the continuous comprises at least one of, the pilot and a scattered pilot, and the carrier type in the second group comprise a reserved tone.