Apparatus for generating broadcasting signal frame including preamble for signaling injection level information and method using the same

An apparatus and method for generating a broadcast signal frame including a preamble signaling injection level information is disclosed. An apparatus for generating a broadcast signal frame according to an exemplary embodiment of the present invention includes an injection level controller for generating a power-reduced enhanced layer signal by reducing the power of an enhanced layer signal; A combiner for combining the core layer signal and the power-reduced enhanced layer signal to generate a multiplexed signal; A power normalizer for lowering the power of the multiplexed signal to a power corresponding to the core layer signal; A time interleaver for interleaving the core layer signal and the enhanced layer signal to generate a time interleaved signal; And a frame builder for generating a broadcast signal frame including a preamble for signaling the injection level information corresponding to the injection level controller.