Broadcast signal transmission/reception method using multiple antennas and layered-division multiplexing and apparatus for the same

A broadcast signal reception apparatus, comprising:

• signal receivers for generating received signals based on signals received through multiple receiving antennas;
• a first decoder for reconstructing a core layer signal corresponding to a signal received through a first receiving antenna;
• and
• a second decoder for reconstructing an enhanced layer signal based on a first enhanced layer signal, in which the core layer signal is removed from the signal received through the first receiving antenna, and a second enhanced layer signal received through the second receiving antenna.

A broadcast signal transmission apparatus, comprising:

• a Multiple-Input Multiple-Output (MIMO) Bit-Interleaved Coded Modulation (BICM) unit for dividing enhanced layer data into two enhanced layer signals having different polarizations;
• a first combination unit for generating a first multiplexed signal corresponding to a first transmitting antenna by combining a core layer signal corresponding to core layer data with a first enhanced layer signal;
• a second combination unit for generating a second multiplexed signal corresponding to a second transmitting antenna by combining the core layer signal with the second enhanced layer signal;
• and
• transmission signal generation units for generating a first transmission signal, corresponding to the first multiplexed signal and transmitted through the first transmitting antenna, and a second transmission signal, corresponding to the second multiplexed signal and transmitted through the second transmitting antenna.