A broadcast signal receiver is provided. The broadcast signal receiver comprises a demodulator configured to demodulate a received broadcast signal, a frame parser configured to parse a signal frame of the demodulated broadcast signal, the signal frame comprising a preamble and Layered Division Multiplexing (LDM) data, and the preamble carrying signaling information, a time deinterleaver configured to time deinterleave the LDM data, a first demapping/decoding unit configured to obtain core layer data by demapping and Forward Error Correction (FEC)-decoding the LDM data, an interference removal unit configured to remove the core layer data from the LDM data and to output enhanced layer data, a second demapping/decoding unit configured to demap and FEC-decode the enhanced layer data, and an output processor configured to process at least one of the core layer data or the enhanced layer data and to output a data stream.