Patent ID: 9674022
Date: 2017-06-06
CPC Classifications: H04L,H04W

Claim:
1. A broadcast signal receiver comprising: a synchronizer/demodulator configured to perform signal detection and Orthogonal Frequency Division Multiplexing (OFDM) demodulation on a received broadcast signal; a frame parser configured to derive service data by parsing a signal frame of the received broadcast signal based on a number of carriers of the signal frame; a demapper and decoder configured to convert the service data into a bit domain and perform deinterleaving; and an output processor configured to receive the service data and output a data stream, wherein the synchronizer/demodulator further comprises a pilot signal detecting module configured to detect a pilot signal including Continual Pilots (CPs) and Scattered Pilots (SPs) from the received broadcast signal, and wherein the number of carriers of the signal frame is determined as a maximum number of carriers or determined by reducing a unit from the maximum number of carriers, the unit is obtained by multiplying a control unit value by a reducing coefficient and the control unit value corresponds to a predetermined number of carriers which are determined based on a Fast Fourier Transform (FFT) size.