Patent ID: 8121232

Claim:
A receiving system, comprising: a signal receiving unit receiving a broadcast signal, the broadcast signal comprising mobile service data and a data group including N number of training sequences; a detector detecting N number of training sequences from the broadcast signal (wherein N≧5), the detected N number of training sequences being received during N number of training sections; an equalizer estimating a channel impulse response (CIR) of N number of training sections, based upon the detected N number of training sequences, applying the channel impulse response estimated in M number of training sections (wherein N≧M) to a cubic spline interpolation function, generating a channel impulse response of (N−1) number of mobile service data sections located between the N number of training sections, thereby performing channel-equalization on the mobile service data of the corresponding mobile service data section; a block decoder performing turbo-decoding in block units on the channel-equalized mobile service data; and an error correction unit performing error correction decoding on the turbo-decoded mobile service data, thereby correcting errors occurring in the mobile service data.