BROADCAST SIGNAL TRANSMITTING APPARATUS, BROADCAST SIGNAL RECEIVING APPARATUS, AND METHOD FOR TRANSCEIVING A BROADCAST SIGNAL IN A BROADCAST SIGNAL TRANSCEIVING APPARATUS

摘要

Disclosed are a broadcast signal transmitting apparatus, a broadcast signal receiving apparatus, and a method for transceiving a broadcast signal in a broadcast signal transceiving apparatus. A method for transmitting a broadcast signal comprises the following steps: receiving a first broadcast signal transmitted via first and second transmitting antennas, while permitting a first tuner to maintain the bandwidth of a sub-band constant and change a tuning frequency for each cell unit, and receiving a second broadcast signal transmitted via the first and second transmitting antennas, while permitting a second tuner to maintain the bandwidth of the sub-band constant and change a tuning frequency for each cell unit; detecting first and second preamble signals from the signal frame of the received first broadcast signal to identify the pilot location in the signal frame, estimating a transmitting channel for the first broadcast signal using the pilot signal of the identified pilot location, and performing channel equalization; detecting first and second preamble signals from the signal frame of the received second broadcast signal to identify the pilot location in the signal frame, estimating a transmitting channel for the second broadcast signal using the pilot signal of the identified pilot location, and performing channel equalization; performing MIMO decoding on the channel-equalized first and second broadcast signals to output a first signal of a first QAM type and a second signal of a second QAM type; and merging the first output signal and the second output signal into one single output signal.