TRANSMITTING/RECEIVING SYSTEM AND METHOD OF PROCESSING BROADCAST SIGNAL IN TRANSMITTING/RECEIVING SYSTEM

摘要

A receiving system and a method of processing broadcast signal are disclosed herein. The receiving system includes a signal receiving unit, a known sequence detector, a channel equalizer, a block decoder, and an error correction unit. The signal receiving unit receives a broadcast signal, which includes mobile service data and a data group including multiple known data sequences. The known sequence detector detects the multiple of known data sequences from the broadcast signal. The channel equalizer repeats a process of updating equalization coefficients and filtering as many times as a pre-determined number of iterations, based upon the detected known data sequences, so as to converge the equalization coefficient. Then, the channel equalizer interpolates or extrapolates using the converged equalization coefficients, thereby channel-equalizing the mobile service data. The block decoder performs turbo-decoding in block units on the channel-equalized mobile service data. And, the error correction unit performs error correction decoding on the decoded mobile service data, thereby correcting an error occurred in the mobile service data.