CHANNEL EQUALIZER AND METHOD OF PROCESSING BROADCAST SIGNAL IN DTV RECEIVING SYSTEM

摘要

A channel equalizer includes a first transformer, an estimator, an average calculator, a second transformer, a coefficient calculator, a compensator, and a third transformer. The first transformer converts normal data into frequency domain data, where a known data sequence is periodically repeated in the normal data. The estimator estimates channel impulse responses (CIR) during known data intervals adjacent to each normal data block. The average calculator calculates an average value of the CIRs. The second transformer converts the average value into frequency domain data. The coefficient calculator calculates equalization coefficients using the average value, and the compensator compensates channel distortion of each normal data block using the coefficients. The third transformer converts the compensated data block into time domain data.

主权项

1. A method of processing broadcast data in a broadcast transmitting system, the method comprising:
first encoding enhanced data; second encoding signaling data; interleaving the first-encoded enhanced data and the second-encoded signaling data to output a data group having the interleaved enhanced data and signaling data; third encoding data in the data group in a third encoding unit; first multiplexing the third-encoded data with synchronization data; and transmitting a broadcast signal including the first-multiplexed data, wherein the data group is transmitted through a burst in the broadcast signal, and wherein the signaling data include at least information related to the data group or information related to the burst.